ADVISORY NOTE #45.01
STANDARD SECTION PROPERTIES FOR HOT DIP GALVANIZING
Issue 1: June 2019
TABLE OF CONTENTS
Contents
STANDARD SECTION PROPERTIES FOR HOT DIP GALVANIZING ______________________________ 1
Introduction ____________________________________________________________________________ 1
How to Use the Tables ____________________________________________________________________ 1
Section Drawings ________________________________________________________________________ 2
Table 1 Equal Angles to AS/NZS 3679.1 ______________________________________________________ 1
Table 2 Unequal Angles to AS/NZS 3679.1 ____________________________________________________ 3
Table 3 Parallel Flange Channels to AS/NZS 3679.1 _____________________________________________ 4
Table 4 Universal Beams to AS/NZS 3679.1 ___________________________________________________ 5
Table 5 Universal Columns to AS/NZS 3679.1 _________________________________________________ 7
Table 6 Flat Bar to AS/NZS 3679.1 __________________________________________________________ 8
Table 7 Round Bar to AS/NZS 3679.1 _______________________________________________________ 12
Table 8 Rod to AS/NZS 3679.1 _____________________________________________________________ 14
Table 9 Square Bar to AS/NZS 3679.1 _______________________________________________________ 15
Table 10 Welded Beams to AS/NZS 3679.2 __________________________________________________ 16
Table 11 Welded Columns to AS/NZS 3679.2 _________________________________________________ 17
Table 12 Circular Hollow Sections (CHS) to AS/NZS 1163 _______________________________________ 18
Table 13 Rectangular Hollow Sections (RHS) to AS/NZS 1163 ____________________________________ 21
Table 14 Square Hollow Sections (SHS) TO AS/NZS 1163 ________________________________________ 24
Cover Image: Baldivis Secondary College, Parry and Rosenthal Architects / BPA Engineering. Photograph © Robert Frith - Acorn Photo
This Advisory Note is intended to keep readers abreast of current issues and developments in the field of galvanizing. The Galvanizers
Association of Australia has made every effort to ensure that the information provided is accurate, however its accuracy, reliability or
completeness is not guaranteed. Any advice given, information provided, or procedures recommended by GAA represent its best
solutions based on its information and research, however may be based on assumptions which while reasonable, may not be applicable
to all environments and potential fields of application. Due and proper consideration has been given to all information provided but no
warranty is made regarding the accuracy or reliability of either the information contained in this publication or any specific
recommendation made to the recipient. Comments made are of a general nature only and are not intended to be relied upon or to be
used as a substitute for professional advice. GAA and its employees disclaim all liability and responsibility for any direct or indirect loss
or damage which may be suffered by the recipient through relying on anything contained or omitted in this publication.
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 1
STANDARD SECTION PROPERTIES FOR HOT DIP GALVANIZING
INTRODUCTION
This Advisory Note contains tables showing the thickness, mass and coating area properties of standard structural steel sections used for hot dip galvanized articles.
The section properties have been derived from:
• AS/NZS 3679.1, Structural Steel – Part 1: Hot-rolled bars and sections
• AS/NZS 3679.2, Structural Steel – Part 2: Welded I sections
• AS/NZS 1163, Cold formed structural steel hollow sections
The coating properties have been derived from:
• AS/NZS 4680, Hot-dip galvanized (zinc) coatings on fabricated ferrous articles
All properties are based on nominal or minimum requirements of the relevant Standard and, particularly with the hot dip galvanized coating thickness, may understate the actual property. Where the coating thickness is important for durability design or sustainability calculations, reference should be made to the GAA or your GAA member galvanizer for more information. While the sections listed are those thought to be commonly available, designers should check specific availability with their steel supplier.
HOW TO USE THE TABLES
The tables provide an estimate of the coated area and the minimum increase in mass once the zinc coating is applied. It is important to recognise that the data is based on nominal section sizes and minimum required coating thicknesses. The actual properties will almost certainly differ from nominal, so the information should be used for guidance only.
The steel Standards include tolerances on shape as well as mass limits. Individual hot rolled sections are required to be no less than 97.% of the nominal mass and a group of products must be with ±2.5% of the nominal mass. Individual hollow sections (tubes) are required to be no less than 96% of the nominal mass.
The factors that affect the coating thickness include the steel thickness, venting and draining design, weld design, steel chemistry and surface roughness. It is not technically possible to coat only one surface of a tubular section, therefore the available coated surface for tubular sections in the tables always includes both the outer and inner surfaces.
Based on experience and as a guide only, most hot rolled structural sections with a minimum steel thickness of 10 mm will typically achieve a hot dip galvanized coating thickness of at least 125 µm, although the tables show only the requirement of the Australian Standard for > 6 mm steel thickness (85 µm). Some thinner sections can also achieve this outcome although agreement must always be obtained from the galvanizer prior to placing an order if non-standard coating thicknesses are required. Most cold formed tubular sections will require additional surface preparation (usually blasting) to achieve much thicker coatings than the nominal shown in the Standard and this document and this blasting is usually only available on the external surface.
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 2
This Advisory Note can be used in conjunction with the GAA Environmental Product Declaration (EPD) where there is a companion registered EPD for the substrate steel section. The EPD contains worked examples showing how to use these two documents to calculate the environmental impact of hot dip galvanized steel in Australia.
SECTION DRAWINGS
Equal Angles
AS/NZS 3679.1
Unequal Angles
AS/NZS 3679.1
Parallel Flange Channels
AS/NZS 3679.1
Universal Beams
AS/NZS 3679.1
Universal Columns
AS/NZS 3679.1
Flat Bar
AS/NZS 3679.1
Round Bar
AS/NZS 3679.1
Square Bar
AS/NZS 3679.1
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 3
Welded Beams
AS/NZS 3679.2
Welded Columns
AS/NZS 3679.2
CHS
AS/NZS 1163
RHS
AS/NZS 1163
SHS
AS/NZS 1163
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 1
Table 1 Equal Angles to AS/NZS 3679.1
DESIGNATION
(a x b x tn)
STEEL
COATED AREA
COATING
TOTAL MASS THICKNESS MASS THICKNESS MASS
ts ms tz mz mt
mm kg/m m2/m m2/t µm kg/m kg/m
200x200x26 EA 26.0 76.8 0.788 10.260 85 0.478 77.278
200x200x20 EA 20.0 60.1 0.788 13.111 85 0.478 60.578
200x200x18 EA 18.0 54.4 0.788 14.485 85 0.478 54.878
200x200x16 EA 16.0 48.7 0.788 16.181 85 0.478 49.178
200x200x13 EA 13.0 40.0 0.788 19.700 85 0.478 40.478
150x150x19 EA 19.0 42.1 0.590 14.014 85 0.358 42.458
150x150x16 EA 15.8 35.4 0.590 16.667 85 0.358 35.758
150x150x12 EA 12.0 27.3 0.590 21.612 85 0.358 27.658
150x150x10 EA 9.5 21.9 0.590 26.941 85 0.358 22.258
125x125x16 EA 15.8 29.1 0.491 16.873 85 0.298 29.398
125x125x12 EA 12.0 22.5 0.491 21.822 85 0.298 22.798
125x125x10 EA 9.5 18.0 0.491 27.278 85 0.298 18.298
125x125x8 EA 7.8 14.9 0.491 32.953 85 0.298 15.198
100x100x12 EA 12.0 17.7 0.392 22.147 85 0.238 17.938
100x100x10 EA 9.5 14.2 0.392 27.606 85 0.238 14.438
100x100x8 EA 7.8 11.8 0.392 33.220 85 0.238 12.038
100x100x6 EA 6.0 9.16 0.392 42.795 70 0.196 9.356
90x90x10 EA 9.5 12.7 0.352 27.717 85 0.214 12.914
90x90x8 EA 7.8 10.6 0.352 33.208 85 0.214 10.814
90x90x6 EA 6.0 8.22 0.352 42.822 70 0.176 8.396
75x75x10 EA 9.5 10.5 0.292 27.810 85 0.177 10.677
75x75x8 EA 7.8 8.73 0.292 33.448 85 0.177 8.907
75x75x6 EA 6.0 6.81 0.292 42.878 70 0.146 6.956
75x75x5 EA 4.6 5.27 0.292 55.408 70 0.146 5.416
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 2
DESIGNATION
(a x b x tn)
STEEL
COATED AREA
COATING
TOTAL MASS THICKNESS MASS THICKNESS MASS
ts ms tz mz mt
mm kg/m m2/m m2/t µm kg/m kg/m
65x65x10 EA 9.5 9.02 0.255 28.271 85 0.155 9.175
65x65x8 EA 7.8 7.51 0.255 33.955 85 0.155 7.665
65x65x6 EA 6.0 5.87 0.255 43.441 70 0.127 5.997
65x65x5 EA 4.6 4.56 0.255 55.921 70 0.127 4.687
55x55x6 EA 6.0 4.93 0.215 43.611 70 0.107 5.037
55x55x5 EA 4.6 3.84 0.215 55.990 70 0.107 3.947
50x50x8 EA 7.8 5.68 0.195 34.331 85 0.118 5.798
50x50x6 EA 6.0 4.46 0.195 43.722 70 0.0975 4.557
50x50x5 EA 4.6 3.48 0.195 56.034 70 0.0975 3.577
50x50x3 EA 3.0 2.31 0.195 84.416 55 0.0766 2.387
45x45x6 EA 6.0 3.97 0.175 44.081 70 0.0875 4.057
45x45x5 EA 4.6 3.10 0.175 56.452 70 0.0875 3.187
45x45x3 EA 3.0 2.06 0.175 84.951 55 0.0687 2.129
40x40x6 EA 6.0 3.50 0.155 44.286 70 0.0775 3.577
40x40x5 EA 4.6 2.73 0.155 56.777 70 0.0775 2.807
40x40x3 EA 3.0 1.83 0.155 84.699 55 0.0609 1.891
30x30x6 EA 6.0 2.56 0.115 44.922 70 0.0575 2.617
30x30x5 EA 4.6 2.01 0.115 57.214 70 0.0575 2.067
30x30x3 EA 3.0 1.35 0.115 85.185 55 0.0452 1.395
25x25x6 EA 6.0 2.08 0.0953 45.817 70 0.0476 2.128
25x25x5 EA 4.6 1.65 0.0953 57.758 70 0.0476 1.698
25x25x3 EA 3.0 1.12 0.0953 85.089 55 0.0374 1.157
Note: For angles, the nominal steel thickness (tn) shown in the designation may vary from the actual steel thickness (ts). Refer to AS/NZS 3679.1 for more information.
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 3
Table 2 Unequal Angles to AS/NZS 3679.1
DESIGNATION
(a x b x tn)
STEEL
COATED AREA
COATING TOTAL MASS
THICKNESS MASS THICKNESS MASS
ts ms tz mz mt
mm kg/m m2/m m2/t µm kg/m kg/m
150x100x12 UA 12.0 22.5 0.491 21.822 85 0.298 22.798
150x100x10 UA 9.5 18.0 0.491 27.278 85 0.298 18.298
150x90x16 UA 15.8 27.9 0.471 16.882 85 0.286 28.186
150x90x12 UA 12.0 21.6 0.471 21.806 85 0.286 21.886
150x90x10 UA 9.5 17.3 0.471 27.225 85 0.286 17.586
150x90x8 UA 7.8 14.3 0.471 32.937 85 0.286 14.586
125x75x12 UA 12.0 17.7 0.392 22.147 85 0.238 17.938
125x75x10 UA 9.5 14.2 0.392 27.606 85 0.238 14.438
125x75x8 UA 7.8 11.8 0.392 33.220 85 0.238 12.038
125x75x6 UA 6.0 9.16 0.392 42.795 70 0.196 9.356
100x75x10 UA 9.5 12.4 0.342 27.581 85 0.208 12.608
100x75x8 UA 7.8 10.3 0.342 33.204 85 0.208 10.508
100x75x6 UA 6.0 7.98 0.342 42.857 70 0.171 8.151
75x50x8 UA 7.8 7.23 0.244 33.748 85 0.148 7.378
75x50x6 UA 6.0 5.66 0.244 43.110 70 0.122 5.782
75x50x5 UA 4.6 4.40 0.244 55.455 70 0.122 4.522
65x50x8 UA 7.8 6.59 0.225 34.143 85 0.137 6.727
65x50x6 UA 6.0 5.16 0.225 43.605 70 0.112 5.272
65x50x5 UA 4.6 4.02 0.225 55.970 70 0.112 4.132
Note: For angles, the nominal steel thickness (tn) shown in the designation may vary from the actual steel thickness (ts). Refer to AS/NZS 3679.1 for more information.
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 4
Table 3 Parallel Flange Channels to AS/NZS 3679.1
DESIGNATION
STEEL
COATED AREA
COATING
TOTAL MASS FLANGE THICKNESS WEB THICKNESS MASS THICKNESS MASS
tf tw ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
380PFC 17.5 10.0 55.2 1.13 20.471 85 0.686 55.886
300PFC 16.0 8.0 40.1 0.932 23.242 85 0.566 40.666
250PFC 15.0 8.0 35.5 0.834 23.493 85 0.506 36.006
230PFC 12.0 6.5 25.1 0.737 29.363 85 0.447 25.547
200PFC 12.0 6.0 22.9 0.678 29.607 85 0.411 23.311
180PFC 11.0 6.0 20.9 0.638 30.526 85 0.387 21.287
150PFC 9.5 6.0 17.7 0.579 32.712 85 0.351 18.051
125PFC 7.5 4.7 11.9 0.494 41.513 85 0.300 12.200
100PFC 6.7 4.2 8.33 0.385 46.218 85 0.234 8.564
75PFC 6.1 3.8 5.92 0.296 50.000 85 0.180 6.100
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 5
Table 4 Universal Beams to AS/NZS 3679.1
DESIGNATION
STEEL
COATED AREA
COATING
TOTAL MASS FLANGE THICKNESS
WEB THICKNESS MASS THICKNESS MASS
tf tw ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
610UB125 19.6 11.9 125 2.09 16.720 85 1.268 126.268
610UB113 17.3 11.2 113 2.08 18.407 85 1.262 114.262
610UB101 14.8 10.6 101 2.07 20.495 85 1.256 102.256
530UB92.4 15.6 10.2 92.4 1.86 20.130 85 1.129 93.529
530UB82.0 13.2 9.6 82.0 1.85 22.561 85 1.123 83.123
460UB82.1 16.0 9.9 82.1 1.65 20.097 85 1.001 83.101
460UB74.6 14.5 9.1 74.6 1.64 21.984 85 0.995 75.595
460UB67.1 12.7 8.5 67.1 1.63 24.292 85 0.989 68.089
410UB59.7 12.8 7.8 59.7 1.49 24.958 85 0.904 60.604
410UB53.7 10.9 7.6 53.7 1.48 27.561 85 0.898 54.598
360UB56.7 13.0 8.0 56.7 1.37 24.162 85 0.831 57.531
360UB50.7 11.5 7.3 50.7 1.36 26.824 85 0.825 51.525
360UB44.7 9.7 6.9 44.7 1.35 30.201 85 0.819 45.519
310UB46.2 11.8 6.7 46.2 1.25 27.056 85 0.759 46.959
310UB40.4 10.2 6.1 40.4 1.24 30.693 85 0.753 41.153
310UB32.0 8.0 5.5 32.0 1.16 36.250 85 0.704 32.704
250UB37.3 10.9 6.4 37.3 1.07 28.686 85 0.649 37.949
250UB31.4 8.6 6.1 31.4 1.06 33.758 85 0.643 32.043
250UB25.7 8.0 5.0 25.7 0.961 37.393 85 0.583 26.283
200UB29.8 9.6 6.3 29.8 0.922 30.940 85 0.560 30.360
200UB25.4 7.8 5.8 25.4 0.912 35.906 85 0.553 25.953
200UB22.3 7.0 5.0 22.3 0.91 40.807 85 0.552 22.852
200UB18.2 7.0 4.5 18.2 0.764 41.978 85 0.464 18.664
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 6
DESIGNATION
STEEL
COATED AREA
COATING
TOTAL MASS FLANGE THICKNESS
WEB THICKNESS MASS THICKNESS MASS
tf tw ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
180UB22.2 10.0 6.0 22.2 0.691 31.126 85 0.419 22.619
180UB18.1 8.0 5.0 18.1 0.685 37.845 85 0.416 18.516
180UB16.1 7.0 4.5 16.1 0.682 42.360 85 0.414 16.514
150UB18.0 9.5 6.0 18.0 0.584 32.444 85 0.354 18.354
150UB14.0 7.0 5.0 14.0 0.576 41.143 85 0.350 14.350
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 7
Table 5 Universal Columns to AS/NZS 3679.1
DESIGNATION
STEEL
COATED AREA
COATING
TOTAL MASS FLANGE THICKNESS
WEB THICKNESS MASS THICKNESS MASS
tf tw ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
310UC158 25.0 15.7 158 1.84 11.646 85 1.117 159.117
310UC137 21.7 13.8 137 1.82 13.285 85 1.105 138.105
310UC118 18.7 11.9 118 1.81 15.339 85 1.098 119.098
310UC96.8 15.4 9.9 96.8 1.79 18.492 85 1.086 97.886
250UC89.5 17.3 10.5 89.5 1.5 16.760 85 0.910 90.410
250UC72.9 14.2 8.6 72.9 1.48 20.302 85 0.898 73.798
200UC59.5 14.2 9.3 59.5 1.22 20.504 85 0.740 60.240
200UC52.2 12.5 8.0 52.2 1.19 22.797 85 0.722 52.922
200UC46.2 11.0 7.3 46.2 1.18 25.541 85 0.716 46.916
150UC37.2 11.5 8.1 37.2 0.908 24.409 85 0.551 37.751
150UC30.0 9.4 6.6 30.0 0.899 29.967 85 0.546 30.546
150UC23.4 6.8 6.1 23.4 0.885 37.821 85 0.537 23.937
100UC14.8 7.0 5.0 14.8 0.563 38.041 85 0.342 15.142
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 8
Table 6 Flat Bar to AS/NZS 3679.1
DESIGNATION
STEEL
COATED AREA
COATING TOTAL MASS
WIDTH THICKNESS MASS THICKNESS MASS
w ts ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
20x10 20 10 1.57 0.060 38.217 85 0.036 1.606
25x5 25 5 0.981 0.060 61.162 70 0.030 1.011
25x6 25 6 1.18 0.062 52.542 70 0.031 1.211
25x8 25 8 1.57 0.066 42.038 85 0.040 1.610
25x10 25 10 1.96 0.070 35.714 85 0.042 2.002
25x12 25 12 2.36 0.074 31.356 85 0.045 2.405
32x5 32 5 1.26 0.074 58.730 70 0.037 1.297
32x6 32 6 1.51 0.076 50.331 70 0.038 1.548
32x8 32 8 2.01 0.080 39.801 85 0.049 2.059
32x10 32 10 2.51 0.084 33.466 85 0.051 2.561
32x12 32 12 3.01 0.088 29.236 85 0.053 3.063
40x5 40 5 1.57 0.090 57.325 70 0.045 1.615
40x6 40 6 1.88 0.092 48.936 70 0.046 1.926
40x8 40 8 2.51 0.096 38.247 85 0.058 2.568
40x10 40 10 3.14 0.100 31.847 85 0.061 3.201
40x12 40 12 3.77 0.104 27.586 85 0.063 3.833
40x16 40 16 5.02 0.112 22.311 85 0.068 5.088
40x20 40 20 6.28 0.120 19.108 85 0.073 6.353
50x5 50 5 1.96 0.110 56.122 70 0.055 2.015
50x6 50 6 2.36 0.112 47.458 70 0.056 2.416
50x8 50 8 3.14 0.116 36.943 85 0.070 3.210
50x10 50 10 3.93 0.120 30.534 85 0.073 4.003
50x12 50 12 4.71 0.124 26.327 85 0.075 4.785
50x16 50 16 6.28 0.132 21.019 85 0.080 6.360
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 9
DESIGNATION
STEEL
COATED AREA
COATING TOTAL MASS
WIDTH THICKNESS MASS THICKNESS MASS
w ts ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
50x20 50 20 7.85 0.140 17.834 85 0.085 7.935
50x25 50 25 9.81 0.150 15.291 85 0.091 9.901
65x5 65 5 2.55 0.140 54.902 70 0.070 2.620
65x6 65 6 3.06 0.142 46.405 70 0.071 3.131
65x8 65 8 4.08 0.146 35.784 85 0.089 4.169
65x10 65 10 5.10 0.150 29.412 85 0.091 5.191
65x12 65 12 6.12 0.154 25.163 85 0.093 6.213
65x16 65 16 8.16 0.162 19.853 85 0.098 8.258
65x20 65 20 10.2 0.170 16.667 85 0.103 10.303
75x5 75 5 2.94 0.160 54.422 70 0.080 3.020
75x6 75 6 3.53 0.162 45.892 70 0.081 3.611
75x8 75 8 4.71 0.166 35.244 85 0.101 4.811
75x10 75 10 5.89 0.170 28.862 85 0.103 5.993
75x12 75 12 7.07 0.174 24.611 85 0.106 7.176
75x16 75 16 9.42 0.182 19.321 85 0.110 9.530
75x20 75 20 11.8 0.190 16.102 85 0.115 11.915
75x25 75 25 14.7 0.200 13.605 85 0.121 14.821
75x40 75 40 23.6 0.230 9.746 85 0.140 23.740
90x6 90 6 4.24 0.192 45.283 70 0.096 4.336
90x8 90 8 5.65 0.196 34.690 85 0.119 5.769
90x10 90 10 7.07 0.200 28.289 85 0.121 7.191
90x12 90 12 8.48 0.204 24.057 85 0.124 8.604
100x5 100 5 3.93 0.210 53.435 70 0.105 4.035
100x6 100 6 4.71 0.212 45.011 70 0.106 4.816
100x8 100 8 6.28 0.216 34.395 85 0.131 6.411
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 10
DESIGNATION
STEEL
COATED AREA
COATING TOTAL MASS
WIDTH THICKNESS MASS THICKNESS MASS
w ts ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
100x10 100 10 7.85 0.220 28.025 85 0.134 7.984
100x12 100 12 9.42 0.224 23.779 85 0.136 9.556
100x16 100 16 12.6 0.232 18.413 85 0.141 12.741
100x20 100 20 15.7 0.240 15.287 85 0.146 15.846
100x25 100 25 19.6 0.250 12.755 85 0.152 19.752
100x50 100 50 39.3 0.300 7.634 85 0.182 39.482
110x6 110 6 5.18 0.232 44.788 70 0.116 5.296
110x8 110 8 6.91 0.236 34.153 85 0.143 7.053
110x10 110 10 8.64 0.240 27.778 85 0.146 8.786
110x12 110 12 10.4 0.244 23.462 85 0.148 10.548
130x5 130 5 5.10 0.270 52.941 70 0.135 5.235
130x6 130 6 6.12 0.272 44.444 70 0.136 6.256
130x8 130 8 8.16 0.276 33.824 85 0.168 8.328
130x10 130 10 10.2 0.280 27.451 85 0.170 10.370
130x12 130 12 12.2 0.284 23.279 85 0.172 12.372
130x16 130 16 16.3 0.292 17.914 85 0.177 16.477
130x20 130 20 20.4 0.300 14.706 85 0.182 20.582
130x25 130 25 25.5 0.310 12.157 85 0.188 25.688
150x5 150 5 5.89 0.310 52.632 70 0.155 6.045
150x6 150 6 7.07 0.312 44.130 70 0.156 7.226
150x8 150 8 9.42 0.316 33.546 85 0.192 9.612
150x10 150 10 11.8 0.320 27.119 85 0.194 11.994
150x12 150 12 14.1 0.324 22.979 85 0.197 14.297
150x16 150 16 18.8 0.332 17.660 85 0.201 19.001
150x20 150 20 23.6 0.340 14.407 85 0.206 23.806
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 11
DESIGNATION
STEEL
COATED AREA
COATING TOTAL MASS
WIDTH THICKNESS MASS THICKNESS MASS
w ts ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
150x25 150 25 29.4 0.350 11.905 85 0.212 29.612
150x50 150 50 58.9 0.400 6.791 85 0.243 59.143
180x6 180 6 8.48 0.372 43.868 70 0.186 8.666
180x10 180 10 14.1 0.380 26.950 85 0.231 14.331
180x12 180 12 17.0 0.384 22.588 85 0.233 17.233
180x20 180 20 28.3 0.400 14.134 85 0.243 28.543
200x6 200 6 9.42 0.412 43.737 70 0.206 9.626
200x8 200 8 12.6 0.416 33.016 85 0.252 12.852
200x10 200 10 15.7 0.420 26.752 85 0.255 15.955
200x12 200 12 18.8 0.424 22.553 85 0.257 19.057
200x16 200 16 25.1 0.432 17.211 85 0.262 25.362
200x20 200 20 31.4 0.440 14.013 85 0.267 31.667
200x25 200 25 39.3 0.450 11.450 85 0.273 39.573
250x6 250 6 11.8 0.512 43.390 70 0.256 12.056
250x8 250 8 15.7 0.516 32.866 85 0.313 16.013
250x10 250 10 19.6 0.520 26.531 85 0.316 19.916
250x12 250 12 23.6 0.524 22.203 85 0.318 23.918
300x6 300 6 14.1 0.612 43.404 70 0.306 14.406
300x8 300 8 18.8 0.616 32.766 85 0.374 19.174
300x10 300 10 23.6 0.620 26.271 85 0.376 23.976
300x12 300 12 28.3 0.624 22.049 85 0.379 28.679
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 12
Table 7 Round Bar to AS/NZS 3679.1
DESIGNATION
STEEL
COATED AREA
COATING TOTAL MASS
DIAMETER MASS THICKNESS MASS
d0 ms tz mz mt
mm kg/m m2/m m2/t µm kg/m kg/m
13 Round 13 1.04 0.041 39.423 85 0.025 1.065
14 Round 14 1.21 0.044 36.364 85 0.027 1.237
15 Round 15 1.39 0.047 33.813 85 0.029 1.419
16 Round 16 1.58 0.050 31.646 85 0.030 1.610
17 Round 17 1.78 0.053 29.775 85 0.032 1.812
18 Round 18 2.00 0.057 28.500 85 0.035 2.035
19 Round 19 2.23 0.060 26.906 85 0.036 2.266
20 Round 20 2.47 0.063 25.506 85 0.038 2.508
21 Round 21 2.72 0.066 24.265 85 0.040 2.760
22 Round 22 2.98 0.069 23.154 85 0.042 3.022
24 Round 24 3.55 0.075 21.127 85 0.046 3.596
26 Round 26 4.17 0.082 19.664 85 0.050 4.220
27 Round 27 4.50 0.085 18.889 85 0.052 4.552
30 Round 30 5.55 0.094 16.937 85 0.057 5.607
32 Round 32 6.31 0.101 16.006 85 0.061 6.371
33 Round 33 6.71 0.104 15.499 85 0.063 6.773
36 Round 36 7.99 0.113 14.143 85 0.069 8.059
39 Round 39 9.38 0.123 13.113 85 0.075 9.455
42 Round 42 10.9 0.132 12.110 85 0.080 10.980
45 Round 45 12.5 0.141 11.280 85 0.086 12.586
48 Round 48 14.2 0.151 10.634 85 0.092 14.292
50 Round 50 15.4 0.157 10.195 85 0.095 15.495
56 Round 56 19.3 0.176 9.119 85 0.107 19.407
60 Round 60 22.2 0.188 8.468 85 0.114 22.314
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 13
DESIGNATION
STEEL
COATED AREA
COATING TOTAL MASS
DIAMETER MASS THICKNESS MASS
d0 ms tz mz mt
mm kg/m m2/m m2/t µm kg/m kg/m
65 Round 65 26.0 0.204 7.846 85 0.124 26.124
75 Round 75 34.7 0.236 6.801 85 0.143 34.843
80 Round 80 39.5 0.251 6.354 85 0.152 39.652
90 Round 90 49.9 0.283 5.671 85 0.172 50.072
100 Round 100 61.7 0.314 5.089 85 0.191 61.891
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 14
Table 8 Rod to AS/NZS 3679.1
DESIGNATION
STEEL
COATED AREA
COATING TOTAL MASS
DIAMETER MASS THICKNESS MASS
d0 ms tz mz mt
mm kg/m m2/m m2/t µm kg/m kg/m
5.5 Rod 5.5 0.187 0.017 90.909 70 0.008 0.195
6.5 Rod 6.5 0.26 0.02 76.923 85 0.012 0.272
7 Rod 7 0.302 0.022 72.848 85 0.013 0.315
8 Rod 8 0.395 0.025 63.291 85 0.015 0.410
9 Rod 9 0.499 0.028 56.112 85 0.017 0.516
10 Rod 10 0.617 0.031 50.243 85 0.019 0.636
11.2 Rod 11.2 0.773 0.035 45.278 85 0.021 0.794
12.5 Rod 12.5 0.963 0.039 40.498 85 0.024 0.987
13 Rod 13 1.04 0.041 39.423 85 0.025 1.065
14 Rod 14 1.21 0.044 36.364 85 0.027 1.237
15 Rod 15 1.39 0.047 33.813 85 0.029 1.419
16 Rod 16 1.58 0.05 31.646 85 0.030 1.610
17 Rod 17 1.78 0.053 29.775 85 0.032 1.812
18 Rod 18 2 0.057 28.500 85 0.035 2.035
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 15
Table 9 Square Bar to AS/NZS 3679.1
DESIGNATION
STEEL
COATED AREA
COATING TOTAL MASS
SIZE MASS THICKNESS MASS
d ms tz mz mt
mm kg/m m2/m m2/t µm kg/m kg/m
12 Square 12 1.13 0.048 42.478 85 0.029 1.159
16 Square 16 2.01 0.064 31.841 85 0.039 2.049
20 Square 20 3.14 0.08 25.478 85 0.049 3.189
25 Square 25 4.91 0.10 20.367 85 0.061 4.971
40 Square 40 12.6 0.16 12.698 85 0.097 12.697
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 16
Table 10 Welded Beams to AS/NZS 3679.2
DESIGNATION
STEEL
COATED AREA
COATING
TOTAL MASS FLANGE THICKNESS
WEB THICKNESS MASS THICKNESS MASS
tf tw ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
1200WB455 40 16 455 4.37 9.604 85 2.652 457.652
1200WB423 36 16 423 4.35 10.284 85 2.640 425.640
1200WB392 32 16 392 4.34 11.071 85 2.634 394.634
1200WB342 32 16 342 3.94 11.520 85 2.391 344.391
1200WB317 28 16 317 3.92 12.366 85 2.379 319.379
1200WB278 25 16 278 3.71 13.345 85 2.252 280.252
1200WB249 25 16 249 3.41 13.695 85 2.070 251.070
1000WB322 32 16 322 3.62 11.242 85 2.197 324.197
1000WB296 28 16 296 3.60 12.162 85 2.185 298.185
1000WB258 25 16 258 3.39 13.140 85 2.057 260.057
1000WB215 20 16 215 3.17 14.744 85 1.924 216.924
900WB282 32 12 282 3.42 12.128 85 2.076 284.076
900WB257 28 12 257 3.41 13.268 85 2.070 259.070
900WB218 25 12 218 3.20 14.679 85 1.942 219.942
900WB175 20 12 175 2.98 17.029 85 1.809 176.809
800WB192 28 10 192 2.81 14.635 85 1.705 193.705
800WB168 25 10 168 2.70 16.071 85 1.639 169.639
800WB146 20 10 146 2.68 18.356 85 1.626 147.626
800WB122 16 10 122 2.56 20.984 85 1.554 123.554
700WB173 28 10 173 2.51 14.509 85 1.523 174.523
700WB150 25 10 150 2.40 16.000 85 1.457 151.457
700WB130 20 10 130 2.38 18.308 85 1.444 131.444
700WB115 16 10 115 2.36 20.522 85 1.432 116.432
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 17
Table 11 Welded Columns to AS/NZS 3679.2
DESIGNATION
STEEL
COATED AREA
COATING
TOTAL MASS FLANGE THICKNESS
WEB THICKNESS MASS THICKNESS MASS
tf tw ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
500WC440 40 40 440 2.88 6.545 85 1.748 441.748
500WC414 40 32 414 2.9 7.005 85 1.760 415.760
500WC383 36 32 383 2.88 7.520 85 1.748 384.748
500WC340 32 25 340 2.98 8.765 85 1.809 341.809
500WC290 28 20 290 2.97 10.241 85 1.802 291.802
500WC267 25 20 267 2.96 11.086 85 1.796 268.796
500WC228 20 20 228 2.94 12.895 85 1.784 229.784
400WC361 40 40 361 2.38 6.593 85 1.444 362.444
400WC328 40 28 328 2.4 7.317 85 1.457 329.457
400WC303 36 28 303 2.39 7.888 85 1.450 304.450
400WC270 32 25 270 2.38 8.815 85 1.444 271.444
400WC212 25 20 212 2.36 11.132 85 1.432 213.432
400WC181 20 20 181 2.34 12.928 85 1.420 182.420
400WC144 16 16 144 2.33 16.181 85 1.414 145.414
350WC280 40 28 280 2.05 7.321 85 1.244 281.244
350WC258 36 28 258 2.04 7.907 85 1.238 259.238
350WC230 32 25 230 2.03 8.826 85 1.232 231.232
350WC197 28 20 197 2.02 10.254 85 1.226 198.226
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 18
Table 12 Circular Hollow Sections (CHS) to AS/NZS 1163
DESIGNATION
(d0 x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DIAMETER THICKNESS MASS THICKNESS MASS
d0 ts ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
457.0x12.7 CHS 457.0 12.7 139 2.79 20.1 85 1.694 140.639
457.0x9.5 CHS 457.0 9.5 104 2.81 26.9 85 1.706 106.111
457.0x6.4 CHS 457.0 6.4 70.7 2.83 40.1 85 1.718 72.368
406.4x12.7 CHS 406.4 12.7 123 2.47 20.1 85 1.501 124.746
406.4x9.5 CHS 406.4 9.5 92.6 2.49 26.9 85 1.513 94.143
406.4x 6.4 CHS 406.4 6.4 62.8 2.51 40.0 85 1.525 64.325
355.6x12.7 CHS 355.6 12.7 107 2.15 20.2 85 1.308 108.068
355.6x9.5 CHS 355.6 9.5 80.9 2.17 26.9 85 1.320 82.175
355.6x6.4 CHS 355.6 6.4 55.0 2.19 39.9 85 1.332 56.282
323.9x12.7 CHS 323.9 12.7 97.3 1.96 20.1 85 1.187 98.527
323.9x9.5 CHS 323.9 9.5 73.0 1.98 27.1 85 1.199 74.204
323.9x6.4 CHS 323.9 6.4 49.5 1.99 40.3 85 1.211 50.666
273.1x12.7 CHS 273.1 12.7 80.9 1.64 20.2 85 0.993 81.848
273.1x9.3 CHS 273.1 9.3 60.4 1.66 27.4 85 1.006 61.451
273.1x6.4 CHS 273.1 6.4 41.6 1.68 40.3 85 1.017 42.622
273.1x4.8 CHS 273.1 4.8 31.4 1.69 53.7 70 0.843 32.243
219.1x8.2 CHS 219.1 8.2 42.4 1.33 31.3 85 0.804 43.194
219.1x6.4 CHS 219.1 6.4 33.0 1.34 40.5 85 0.811 33.781
219.1x4.8 CHS 219.1 4.8 25.1 1.35 53.6 70 0.673 25.793
168.3x7.1 CHS 168.3 7.1 27.5 1.01 36.9 85 0.615 28.090
168.3x6.4 CHS 168.3 6.4 25.1 1.02 40.5 85 0.617 25.737
168.3x4.8 CHS 168.3 4.8 18.8 1.03 54.5 70 0.513 19.353
165.1x5.4 CHS 165.1 5.4 21.2 1.00 47.3 70 0.502 21.697
165.1x5.0 CHS 165.1 5.0 19.6 1.01 51.3 70 0.503 20.128
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 19
DESIGNATION
(d0 x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DIAMETER THICKNESS MASS THICKNESS MASS
d0 ts ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
165.1x3.5 CHS 165.1 3.5 13.3 1.02 76.1 70 0.507 13.852
139.7x5.4 CHS 139.7 5.4 17.3 0.844 48.9 70 0.422 17.692
139.7x5.0 CHS 139.7 5.0 16.5 0.846 51.3 70 0.423 16.908
139.7x3.5 CHS 139.7 3.5 11.0 0.856 77.9 70 0.428 11.418
139.7x3.0 CHS 139.7 3.0 9.42 0.859 91.2 55 0.337 9.757
114.3x5.4 CHS 114.3 5.4 14.1 0.684 48.4 70 0.342 14.472
114.3x4.5 CHS 114.3 4.5 11.8 0.690 58.6 70 0.345 12.120
114.3x3.6 CHS 114.3 3.6 9.42 0.696 73.8 70 0.348 9.768
114.3x3.2 CHS 114.3 3.2 8.64 0.698 80.8 70 0.349 8.984
101.6x5.0 CHS 101.6 5.0 11.8 0.607 51.5 70 0.303 12.078
101.6x4.0 CHS 101.6 4.0 9.42 0.613 65.1 70 0.306 9.726
101.6x3.2 CHS 101.6 3.2 7.07 0.618 87.5 70 0.309 7.374
101.6x2.6 CHS 101.6 2.6 6.28 0.622 99.1 55 0.244 6.524
88.9x5.9 CHS 88.9 5.9 11.8 0.522 44.3 70 0.261 12.036
88.9x5.0 CHS 88.9 5.0 10.2 0.527 51.7 70 0.263 10.468
88.9x4.0 CHS 88.9 4.0 7.85 0.533 68.0 70 0.267 8.117
88.9x3.2 CHS 88.9 3.2 6.28 0.538 85.7 70 0.269 6.549
88.9x2.6 CHS 88.9 2.6 5.50 0.542 98.7 55 0.213 5.708
76.1x5.9 CHS 76.1 5.9 10.2 0.441 43.2 70 0.220 10.425
76.1x4.5 CHS 76.1 4.5 7.85 0.450 57.3 70 0.225 8.075
76.1x3.6 CHS 76.1 3.6 6.28 0.456 72.5 70 0.228 6.508
76.1x3.2 CHS 76.1 3.2 5.50 0.458 83.4 70 0.229 5.724
76.1x2.3 CHS 76.1 2.3 3.93 0.464 118 55 0.182 4.107
60.3x5.4 CHS 60.3 5.4 7.07 0.345 48.8 70 0.172 7.237
60.3x4.5 CHS 60.3 4.5 5.50 0.351 63.8 70 0.175 5.670
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 20
DESIGNATION
(d0 x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DIAMETER THICKNESS MASS THICKNESS MASS
d0 ts ms tz mz mt
mm mm kg/m m2/m m2/t µm kg/m kg/m
60.3x3.6 CHS 60.3 3.6 4.71 0.356 75.6 70 0.178 4.888
60.3x2.9 CHS 60.3 2.9 3.93 0.361 91.9 55 0.142 4.067
60.3x2.3 CHS 60.3 2.3 3.14 0.364 116 55 0.143 3.283
48.3x5.4 CHS 48.3 5.4 5.50 0.270 49.1 70 0.135 5.630
48.3x4.0 CHS 48.3 4.0 3.93 0.278 70.9 70 0.139 4.064
48.3x3.2 CHS 48.3 3.2 3.14 0.283 90.2 70 0.142 3.282
48.3x2.9 CHS 48.3 2.9 3.14 0.285 90.8 55 0.112 3.252
48.3x2.3 CHS 48.3 2.3 2.36 0.289 123 55 0.114 2.469
42.4x4.0 CHS 42.4 4.0 3.14 0.241 76.8 70 0.121 3.261
42.4x3.2 CHS 42.4 3.2 2.36 0.246 105 70 0.123 2.478
42.4x2.6 CHS 42.4 2.6 2.36 0.250 106 55 0.098 2.453
42.4x2.0 CHS 42.4 2.0 1.57 0.254 162 55 0.100 1.670
33.7x4.0 CHS 33.7 4.0 2.36 0.187 79.2 70 0.093 2.448
33.7x3.2 CHS 33.7 3.2 2.36 0.192 81.4 70 0.096 2.451
33.7x2.6 CHS 33.7 2.6 1.57 0.195 124 55 0.077 1.647
33.7x2.0 CHS 33.7 2.0 0.785 0.199 254 55 0.078 0.863
26.9x3.2 CHS 26.9 3.2 1.57 0.149 94.8 70 0.074 1.644
26.9x2.6 CHS 26.9 2.6 0.785 0.153 194 55 0.060 0.845
26.9x2.3 CHS 26.9 2.3 0.785 0.155 197 55 0.061 0.846
26.9x2.0 CHS 26.9 2.0 0.785 0.156 199 55 0.061 0.846
21.3x3.2 CHS 21.3 3.2 0.785 0.114 145 70 0.057 0.842
21.3x2.6 CHS 21.3 2.6 0.785 0.117 150 55 0.046 0.831
21.3x2.0 CHS 21.3 2.0 0.785 0.121 154 55 0.048 0.833
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 21
Table 13 Rectangular Hollow Sections (RHS) to AS/NZS 1163
DESIGNATION
(d x b x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DEPTH WIDTH THICKNESS MASS THICKNESS MASS
d b ts ms tz mz mt
mm mm mm kg/m m2/m m2/t µm kg/m kg/m
250x150x9.0 RHS 250 150 9.0 51.8 1.47 28.3 85 0.890 52.700
250x150x6.0 RHS 250 150 6.0 35.6 1.51 42.4 70 0.755 36.394
250x150x5.0 RHS 250 150 5.0 30.0 1.53 50.9 70 0.763 30.750
200x100x9.0 RHS 200 100 9.0 37.7 1.07 28.3 85 0.647 38.327
200x100x6.0 RHS 200 100 6.0 26.2 1.11 42.4 70 0.555 26.774
200x100x5.0 RHS 200 100 5.0 22.1 1.13 50.8 70 0.563 22.700
200x100x4.0 RHS 200 100 4.0 18.0 1.14 63.4 70 0.570 18.547
150x100x9.0 RHS 150 100 9.0 30.6 0.866 28.3 85 0.526 31.141
150x100x6.0 RHS 150 100 6.0 21.5 0.911 42.3 70 0.455 21.964
150x100x5.0 RHS 150 100 5.0 18.2 0.926 50.8 70 0.463 18.675
150x100x4.0 RHS 150 100 4.0 14.8 0.941 63.4 70 0.470 15.307
150x50x6.0 RHS 150 50 6.0 16.8 0.711 42.3 70 0.355 17.154
150x50x5.0 RHS 150 50 5.0 14.3 0.726 50.8 70 0.363 14.650
150x50x4.0 RHS 150 50 4.0 11.7 0.741 63.3 70 0.370 12.067
150x50x3.0 RHS 150 50 3.0 9.0 0.761 84.2 55 0.299 9.326
150x50x2.5 RHS 150 50 2.5 7.5 0.767 102 55 0.301 7.837
150x50x2.0 RHS 150 50 2.0 6.1 0.774 126 55 0.304 6.427
125x75x6.0 RHS 125 75 6.0 16.8 0.711 42.3 70 0.355 17.154
125x75x5.0 RHS 125 75 5.0 14.3 0.726 50.8 70 0.363 14.650
125x75x4.0 RHS 125 75 4.0 11.7 0.741 63.3 70 0.370 12.067
125x75x3.0 RHS 125 75 3.0 9.0 0.761 84.2 55 0.299 9.326
125x75x2.5 RHS 125 75 2.5 7.5 0.767 102 55 0.301 7.837
125x75x2.0 RHS 125 75 2.0 6.1 0.774 126 55 0.304 6.427
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 22
DESIGNATION
(d x b x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DEPTH WIDTH THICKNESS MASS THICKNESS MASS
d b ts ms tz mz mt
mm mm mm kg/m m2/m m2/t µm kg/m kg/m
100x50x6.0 RHS 100 50 6.0 12.1 0.511 42.3 70 0.255 12.344
100x50x5.0 RHS 100 50 5.0 10.4 0.526 50.7 70 0.263 10.625
100x50x4.0 RHS 100 50 4.0 8.6 0.541 63.2 70 0.270 8.827
100x50x3.5 RHS 100 50 3.5 7.5 0.548 72.7 70 0.274 7.810
100x50x3.0 RHS 100 50 3.0 6.7 0.561 84.0 55 0.220 6.893
100x50x2.5 RHS 100 50 2.5 5.6 0.567 102 55 0.223 5.796
100x50x2.0 RHS 100 50 2.0 4.6 0.574 126 55 0.225 4.778
100x50x1.6 RHS 100 50 1.6 3.7 0.579 157 55 0.227 3.917
75x50x6.0 RHS 75 50 6.0 9.7 0.411 42.2 70 0.205 9.939
75x50x5.0 RHS 75 50 5.0 8.4 0.426 50.7 70 0.213 8.612
75x50x4.0 RHS 75 50 4.0 7.0 0.441 63.1 70 0.220 7.207
75x50x3.0 RHS 75 50 3.0 5.5 0.461 83.8 55 0.181 5.676
75x50x2.5 RHS 75 50 2.5 4.6 0.467 101 55 0.183 4.815
75x50x2.0 RHS 75 50 2.0 3.8 0.474 126 55 0.186 3.954
75x50x1.6 RHS 75 50 1.6 3.1 0.479 156 55 0.188 3.250
75x25x2.5 RHS 75 25 2.5 3.6 0.367 102 55 0.144 3.755
75x25x2.0 RHS 75 25 2.0 3.0 0.374 125 55 0.147 3.130
75x25x1.6 RHS 75 25 1.6 2.4 0.379 156 55 0.149 2.582
65x35x4.0 RHS 65 35 4.0 5.4 0.341 62.9 70 0.170 5.587
65x35x3.0 RHS 65 35 3.0 4.3 0.361 83.5 55 0.142 4.459
65x35x2.5 RHS 65 35 2.5 3.6 0.367 102 55 0.144 3.755
65x35x2.0 RHS 65 35 2.0 3.0 0.374 125 55 0.147 3.130
50x25x3.0 RHS 50 25 3.0 3.1 0.261 83.0 55 0.102 3.242
50x25x2.5 RHS 50 25 2.5 2.7 0.267 100 55 0.105 2.774
50x25x2.0 RHS 50 25 2.0 2.2 0.274 125 55 0.107 2.305
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 23
DESIGNATION
(d x b x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DEPTH WIDTH THICKNESS MASS THICKNESS MASS
d b ts ms tz mz mt
mm mm mm kg/m m2/m m2/t µm kg/m kg/m
50x25x1.6 RHS 50 25 1.6 1.8 0.279 155 55 0.110 1.915
50x20x3.0 RHS 50 20 3.0 2.9 0.241 82.8 55 0.094 2.999
50x20x2.5 RHS 50 20 2.5 2.4 0.247 102 55 0.097 2.531
50x20x2.0 RHS 50 20 2.0 2.0 0.254 124 55 0.100 2.141
50x20x1.6 RHS 50 20 1.6 1.6 0.259 157 55 0.102 1.750
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 24
Table 14 Square Hollow Sections (SHS) TO AS/NZS 1163
DESIGNATION
(d x b x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DEPTH WIDTH THICKNESS MASS THICKNESS MASS
d b ts ms tz mz mt
mm mm mm kg/m m2/m m2/t µm kg/m kg/m
250x250x9.0 SHS 250 250 9.0 65.9 1.87 28.3 85 1.133 67.073
250x250x6.0 SHS 250 250 6.0 45.1 1.91 42.4 70 0.955 46.014
200x200x9.0 SHS 200 200 9.0 51.8 1.47 28.3 85 0.890 52.700
200x200x6.0 SHS 200 200 6.0 35.6 1.51 42.4 70 0.755 36.394
200x200x5.0 SHS 200 200 5.0 30.0 1.53 50.9 70 0.763 30.750
150x150x9.0 SHS 150 150 9.0 37.7 1.07 28.3 85 0.647 38.327
150x150x6.0 SHS 150 150 6.0 26.2 1.11 42.4 70 0.555 26.774
150x150x5.0 SHS 150 150 5.0 22.1 1.13 50.8 70 0.563 22.700
125x125x9.0 SHS 125 125 9.0 30.6 0.866 28.3 85 0.526 31.141
125x125x6.0 SHS 125 125 6.0 21.5 0.911 42.3 70 0.455 21.964
125x125x5.0 SHS 125 125 5.0 18.2 0.926 50.8 70 0.463 18.675
125x125x4.0 SHS 125 125 4.0 14.8 0.941 63.4 70 0.470 15.307
100x100x9.0 SHS 100 100 9.0 23.6 0.666 28.3 85 0.404 23.954
100x100x6.0 SHS 100 100 6.0 16.8 0.711 42.3 70 0.355 17.154
100x100x5.0 SHS 100 100 5.0 14.3 0.726 50.8 70 0.363 14.650
100x100x4.0 SHS 100 100 4.0 11.7 0.741 63.3 70 0.370 12.067
100x100x3.0 SHS 100 100 3.0 9.0 0.761 84.2 55 0.299 9.326
100x100x2.5 SHS 100 100 2.5 7.5 0.767 102 55 0.301 7.837
100x100x2.0 SHS 100 100 2.0 6.1 0.774 126 55 0.304 6.427
89x89x6.0 SHS 89 89 6.0 14.7 0.623 42.4 70 0.311 14.991
89x89x5.0 SHS 89 89 5.0 12.6 0.638 50.8 70 0.319 12.879
89x89x3.5 SHS 89 89 3.5 9.1 0.660 72.5 70 0.330 9.436
75x75x6.0 SHS 75 75 6.0 12.1 0.511 42.3 70 0.255 12.344
75x75x5.0 SHS 75 75 5.0 10.4 0.526 50.7 70 0.263 10.625
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 25
DESIGNATION
(d x b x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DEPTH WIDTH THICKNESS MASS THICKNESS MASS
d b ts ms tz mz mt
mm mm mm kg/m m2/m m2/t µm kg/m kg/m
75x75x4.0 SHS 75 75 4.0 8.6 0.541 63.2 70 0.270 8.827
75x75x3.5 SHS 75 75 3.5 7.5 0.548 72.7 70 0.274 7.810
75x75x3.0 SHS 75 75 3.0 6.7 0.561 84.0 55 0.220 6.893
75x75x2.5 SHS 75 75 2.5 5.6 0.567 102 55 0.223 5.796
75x75x2.0 SHS 75 75 2.0 4.6 0.574 126 55 0.225 4.778
65x65x6.0 SHS 65 65 6.0 10.2 0.431 42.2 70 0.215 10.420
65x65x5.0 SHS 65 65 5.0 8.8 0.446 50.7 70 0.223 9.015
65x65x4.0 SHS 65 65 4.0 7.3 0.461 63.1 70 0.230 7.531
65x65x3.0 SHS 65 65 3.0 5.7 0.481 83.9 55 0.189 5.919
65x65x2.5 SHS 65 65 2.5 4.8 0.487 102 55 0.191 4.980
65x65x2.0 SHS 65 65 2.0 3.9 0.494 126 55 0.194 4.119
65x65x1.6 SHS 65 65 1.6 3.1 0.499 159 55 0.196 3.336
50x50x5.0 SHS 50 50 5.0 6.4 0.326 50.6 70 0.163 6.600
50x50x4.0 SHS 50 50 4.0 5.4 0.341 62.9 70 0.170 5.587
50x50x3.0 SHS 50 50 3.0 4.3 0.361 83.5 55 0.142 4.459
50x50x2.5 SHS 50 50 2.5 3.6 0.367 102 55 0.144 3.755
50x50x2.0 SHS 50 50 2.0 3.0 0.374 125 55 0.147 3.130
50x50x1.6 SHS 50 50 1.6 2.4 0.379 156 55 0.149 2.582
40x40x4.0 SHS 40 40 4.0 4.2 0.261 62.6 70 0.130 4.291
40x40x3.0 SHS 40 40 3.0 3.4 0.281 83.1 55 0.110 3.486
40x40x2.5 SHS 40 40 2.5 2.8 0.287 102 55 0.113 2.939
40x40x2.0 SHS 40 40 2.0 2.4 0.294 125 55 0.115 2.470
40x40x1.6 SHS 40 40 1.6 1.9 0.299 159 55 0.117 2.001
35x35x3.0 SHS 35 35 3.0 2.9 0.241 82.8 55 0.094 2.999
35x35x2.5 SHS 35 35 2.5 2.4 0.247 102 55 0.097 2.531
ADVISORY NOTE #45.01
Standard Section Properties for Hot Dip Galvanizing Page 26
DESIGNATION
(d x b x ts)
STEEL
COATED AREA
COATING TOTAL MASS
DEPTH WIDTH THICKNESS MASS THICKNESS MASS
d b ts ms tz mz mt
mm mm mm kg/m m2/m m2/t µm kg/m kg/m
35x35x2.0 SHS 35 35 2.0 2.0 0.254 124 55 0.100 2.141
35x35x1.6 SHS 35 35 1.6 1.6 0.259 157 55 0.102 1.750
30x30x2.0 SHS 30 30 2.0 1.7 0.214 124 55 0.084 1.811
30x30x1.6 SHS 30 30 1.6 1.4 0.219 155 55 0.086 1.499
25x25x3.0 SHS 25 25 3.0 2.0 0.161 81.8 55 0.063 2.026
25x25x2.5 SHS 25 25 2.5 1.6 0.167 101 55 0.066 1.714
25x25x2.0 SHS 25 25 2.0 1.4 0.174 123 55 0.068 1.481
25x25x1.6 SHS 25 25 1.6 1.2 0.179 152 55 0.070 1.248
20x20x1.6 SHS 20 20 1.6 0.9 0.139 148 55 0.055 0.997
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