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BRITISH STANDARD BS 302-2:1987Reprinted,incorporating Amendment No. 1
Stranded steel wireropes —
Part 2: Specification for ropes forgeneral purposes
UDC 677.721
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BS 302-2:1987
© BSI 01-1999 i
Contents
Page
Committees responsible Inside front cover
Foreword ii1 Scope 1
2 Definitions 1
3 Compliance 1
4 Wire rope constructions and sizes 1
5 Material 1
6 Lay 2
7 Lubrication 2
8 Minimum breaking load 2
Figure 1 — 6 × 19 and 6 × 36 construction groups 3
Table 1 — Wire rope constructions and sizes 1
Table 2 — 6 × 7 construction group 2Table 3 — 6 × 19 and 6 × 36 construction groups 4
Table 4 — 12 × 6 over 3 × 24 construction group 5
Table 5 — 17 × 7 and 18 × 7 construction groups with fibreor steel core 6
Table 6 — 34 × 7 construction group with fibre or steel core 7
Publications referred to Inside back cover
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Foreword
This Part of BS 302 has been prepared under the direction of the MechanicalHandling Standards Committee. It is one Part of a combined revision ofBS 302:1968, BS 236:1968, BS 329:1968, BS 330:1968, BS 365:1968 andBS 3530:1968, which are withdrawn. BS 302 is now published in six Parts andtakes account of both national and international developments since 1968.
This Part (Part 2) specifies requirements for general purpose steel wire ropesadditional to the general requirements in Part 1. Subsequent Parts specify theadditional requirements for other particular uses of ropes:
— Part 3: Specification for zinc coated ropes for ships;
— Part 4: Specification for ropes for lifts;
— Part 5: Specification for ropes for hauling purposes;
— Part 6: Specification for ropes for mine hoisting .
Two further Parts are in preparation, covering larger diameter ropes (64 mmto 205 mm diameter) and higher strength ropes and will be Parts 7 and 8
respectively.In line with the principles of international standard ISO 2408, published by theInternational Organization for Standardization (ISO), the constructions aregrouped according to the number of outer wires in the strands. The generalrequirements of BS 302-1 and the methods used for calculating breaking loadsand approximate masses are in accordance with ISO 2408. In respect ofindividual usages the ropes in Parts 2 and 3 are fully in accordance with ISO 2408and those in section 2 of Part 4 are in accordance with ISO 4344. In each of theseParts however, certain additional ropes still in common use in the UK have beenincluded.
In line with current international practice, the term “zinc coated” has beenadopted in this standard in place of “galvanized”. The terms are synonymous.
Purchasers ordering to BS 302 are advised to specify in their purchasing contractthat the manufacturer operate a quality system in compliance with theappropriate Part of BS 5750, or suitable equivalent, to ensure themselves thatproducts claimed to comply with BS 302 consistently achieve the required level ofquality.
Wire rope users will find valuable information in the companion publicationBS 6570 “Code of practice for the selection, care and maintenance of steel wireropes”.
A British Standard does not purport to include all the necessary provisions of acontract. Users of British Standards are responsible for their correct application.
Compliance with a British Standard does not of itself confer immunityfrom legal obligations.
Summary of pages
This document comprises a front cover, an inside front cover, pages i and ii,
pages 1 to 8, an inside back cover and a back cover.This standard has been updated (see copyright date) and may have hadamendments incorporated. This will be indicated in the amendment table onthe inside front cover.
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1 Scope
This Part of BS 302 specifies the requirements for
steel wire ropes for general purposes and is for usein conjunction with Part 1.
NOTE 1 Information to be supplied by the purchaser on theenquiry and order is given in appendix F of BS 302-1:1987.
NOTE 2 The titles of the publications referred to in thisstandard are listed on the inside back page.
2 Definitions
For the purposes of this Part of BS 302, thedefinitions given in BS 302-1 apply.
3 Compliance
Ropes in accordance with BS 302-2 shall complywith this Part and with BS 302-1.
4 Wire rope constructions and sizes
Constructions and size ranges shall be as given in
Table 1.
NOTE In the absence of a precise indication by the purchaseron the enquiry and order, the choice of construction within agroup is at the discretion of the supplier.
5 Material
5.1 Wire
5.1.1 General. The wire used for the manufacture ofwire ropes specified in this Part, as shown inTable 1, shall comply with sections 1 and 2 ofBS 2763:1982. The mechanical tests shall beconfined to the tensile strength and torsion
requirements.5.1.2 Wire finish. The wire shall be bright or class Zzinc coated for all constructions. Zinc coating shallcomply with BS 2763.
Table 1 — Wire rope constructions and sizes
Ropegroup
Description Size range(diameter)
Typical construction
mm
6 × 7 Up to seven outer wires in a strand, one layer ofwire over a king wire.
2 to 9 6 × 7 (6/1)
6 × 19 8 to 12 outer wires in a strand, two or threelayers over a king wire. Wires equal laid.
3 to 52 6 × 19 (9/9/1)a
6 × 19 (12/6 + 6F/1)6 × 26 (10/5 and 5/5/1)6 × 31 (12/6 and 6/6/1)
6 × 36 14 to 18 outer wires in strand, 3 or more layersof wire over a king wire. Wires equal laid.
9 to 60 6 × 36 (14/7 and 7/7/1)6 × 41 (16/8 and 8/8/1)6 × 49 (16/8 and 8/8/8/1)
12 × 6over
3 × 24
“Paragon” multi-strand.
12 to 18 centreless flat strands each comprisingfour to six wires cross laid over three ovalstrands usually of the construction (15/9/FIBRE)over a fibre core.
8 to 32 12 × 6 over 3 × 24
17 × 7or
18 × 7
17 or 18 strands in rope. Two layers of strandover fibre or steel core.
6 to 26 17 × 7 (6/1)18 × 7 (6/1)
34 × 7 34 or 36 strands in rope. Three layers of strandover fibre or steel core.
16 to 40 34 × 7 (6/1)36 × 7 (6/1)
a 3 mm to 6 mm ropes in this group are only available as 6 × 19 (12/6/1).
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5.1.3 Tensile grade of wires. For all constructions,all wires except filler wires, king wires and wires
forming a steel main core, whether bright or zinccoated, shall be of 1 770 N/mm2 1) tensile grade.
5.2 Rope main core
5.2.1 General. The main core of the rope shall be offibre or steel.
5.2.2 Fibre core. Fibre cores shall comply with 3.2 ofBS 302-1:1987.
5.2.3 Steel core. Where a steel core is used, it shallbe an independent wire rope (IWRC) for rope sizesof 13 mm diameter and above. For rope sizes smallerthan 13 mm diameter the steel core shall be eitheran IWRC or a wire strand (WSC).
All wires forming a steel main core, except kingwires, shall be of one tensile grade.
6 Lay
6.1 Direction of lay
Ropes shall be of right-hand lay or of left-hand lay.
NOTE For economic reasons right-hand lay is preferred andwill be supplied. It will need to be stated by the purchaser on hisenquiry and order if a left-hand lay rope is required.
6.2 Type of lay
Round strand ropes shall be either ordinary orLang’s lay. Multistrand ropes shall have either anordinary or Lang’s lay outer layer, with theexception of ropes of Paragon construction whichshall have a Lang’s lay outer layer.
7 Lubrication
Fibre main cores shall be treated and the wires ofthe rope shall be coated with a lubricant complyingwith 3.3 of BS 302-1:1987.
NOTE The degree and type of lubrication should be agreedbetween the purchaser and the supplier.
8 Minimum breaking load
The minimum breaking loads shall be as given inTable 2 to Table 6.
NOTE For guidance, these tables also give approximate massesof ropes, calculated as in C.2 of BS 302-1:1987.
Table 2 — 6 × 7 Construction group
1) 1 N/mm2 = 1 MPa.
Nominal
diameter
Minimum breaking force
(1 770 N/mm2
tensile grade)
Minimum breaking load
(1 770 N/mm2
tensile grade)
Approximate mass
Fibre cored Steel cored Fibre cored Steel cored Fibre cored Steel cored
mm
23
45
67
89
kN
2.355.29
9.4014.7
21.228.8
37.647.6
kN
2.545.72
10.215.9
22.931.1
40.751.5
t
0.240.54
0.961.50
2.162.94
3.834.85
t
0.260.58
1.041.62
2.333.17
4.155.25
kg/100 m
1.383.11
5.548.65
12.517.0
22.128.0
kg/100 m
1.523.43
6.109.53
13.718.7
24.430.9
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Figure 1 — 6 × 19 and 6 × 36 construction groups
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Table 3 — 6 × 19 and 6 × 36 construction groups
Nominal
diameter
Minimum breaking force
(1 770 N/mm2 tensile grade)
Minimum breaking load
(1 770 N/mm2 tensile grade)
Approximate mass
Fibre cored Steel cored Fibre cored Steel cored Fibre cored Steel cored
mm
3456
789
10
11121314
16181920
22242628
32353638
40444852
545660
kN
4.898.69
13.619.6
28.637.447.358.4
70.784.198.7
114
150189211234
283336395458
598716757843
9351 1311 3461 579
1 7031 8322 103
kN
5.299.4
14.721.2
30.940.351.0
63.0
76.290.7
106124
161204227252
305363426494
645772817910
1 0081 2201 4521 704
1 8371 9762 268
t
0.500.891.392.00
2.923.814.825.95
7.218.57
10.111.6
15.319.321.523.9
28.834.340.346.7
61.073.077.285.9
95.3115137161
174187214
t
0.540.961.502.16
3.154.115.206.42
7.779.25
10.812.6
16.420.823.125.7
31.137.043.450.4
65.778.783.392.8
103124148174
187201231
kg/100 m
3.115.548.65
12.5
17.723.129.236.1
43.752.061.070.8
92.4117130144
175208244283
370442468521
578699832976
1 0531 1321 300
kg/100 m
3.436.109.53
13.7
19.525.532.239.8
48.257.367.378.0
102129144159
193229269312
408488516575
637771917
1 076
1 1611 2481 433
NOTE 1 3 mm to 8 mm rope is not available in the 6 × 36 construction group.NOTE 2 56 mm and 60 mm ropes are only available in the 6 × 36 construction group.
NOTE 3 The values for 3, 4, 5 and 6 mm ropes are based on 6 × 19 cross-lay construction.
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Table 4 — 12 × 6 over 3 × 24 construction group
Nominal diameter Minimum breaking force
(1 770 N/mm2
tensile grade)
Minimum breaking load
(1 770 N/mm2
tensile grade)
Approximate mass
(fibre cored)
mm
89
1011
12131416
18192022
24262832
kN
34.043.053.164.3
76.589.7
104136
172192212257
306359416544
t
3.474.385.416.55
7.809.14
10.613.9
17.519.621.626.2
31.236.642.455.5
kg/100 m
23.229.336.243.8
52.161.271.092.7
117131145175
209245284371
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Table 5 — 17 × 7 and 18 × 7 construction groups with fibre or steel core
Nominal diameter Minimum breaking force
(1 770 N/mm2
tensile grade)
Minimum breaking load
(1 770 N/mm2
tensile grade)
Approximate mass
(fibre cored)
mm
6789
10111213
14161819
20222426
kN
20.928.437.247.0
58.170.283.698.1
114149188210
232281334392
t
2.132.903.794.79
5.927.168.52
10.0
11.615.219.221.4
23.628.634.040.0
kg/100 m
14.019.125.031.6
39.047.256.265.9
76.499.8
126141
156189225264
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Table 6 — 34 × 7 construction group with fibre or steel core
Nominal diameter Minimum breaking force
(1 770 N/mm2
tensile grade)
Minimum breaking load
(1 770 N/mm2
tensile grade)
Approximate mass
mm
16181920
22242628
3235
3638
40
kN
144182203225
272324380441
576690
729813
901
t
14.718.620.722.9
27.733.038.745.0
58.770.3
74.382.9
91.8
kg/100 m
99.8126141156
189225264306
399478
505563
624
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Publications referred to
BS 2763, Specification for round carbon steel wire for wire ropes.
BS 5750, Quality systems2).
BS 5750-2, Specification for manufacture and installation.BS 6570, Code of practice for the selection, care and maintenance of steel wire ropes2).
ISO 2408, Steel wire ropes for general purposes — Characteristics2).
ISO 4344, Steel wire ropes for lifts2).
2) Referred to in the foreword only.
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