Post on 06-Sep-2015
description
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Welding of the austenitic alloys Super 304H, 310N and 347H FG
Russel FuchsDr. Herbert Heuser
Int. Conf. WELDS 2009, Fort Myers, FloridaJune 24-26th, 2009
We are the World of Welding Solutions.
WELDS 2009
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Plant Hamm
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
One of the first steam collectors for steam power stations (P91) fabricated in USA in the early 1990`s
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Content
State of the art of development, qualification andapplication of filler metals for the new kind of alloys:
- Super 304 H- 310 N- 347 H FG
Ongoing development
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Source: After BHE 2005
770 C 770 C
DMV617
700 C
Sanicro 25
Alloy 263
DMV310N
HR3C
DMV304HCu
S304H
670 C640 C
615 C
1.4910
DMV347HFG
Material Selection for Austenitic Superheater Tubes;Supercritical Application
Material Material SelectionSelection forfor AusteniticAustenitic SuperheaterSuperheater TubesTubes;;SupercriticalSupercritical ApplicationApplication
Design
Temperatures
Remark: DMV Grade DMV 304HCu used in shot peened condition
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Chemical composition of Superheater / Reheater Boiler Tubes
C Si Mn Fe Cr Ni Mo Cu Nb Ti OtherX3CrNiMoN17-131.4910
max.0,04
max.0,75
max.2,00 Rem.
16,0-18,0
12,0-14,0
2,00-2,80
--
--
--
N 0,10 - 0,18B 0,0015 - 0,0050
HR3C 0,04-0,10
max.0,75
max.2,00 Rem.
24,0-26,0
17,0-23,0
--
--
0,20-0,60
-- N 0,15 - 0,35
DMV310N 0,05-0,07
0,30-0,50
1,00-1,40 Rem.
24,4-25,0
20,8-21,5
--
--
0,40-0,50
-- N 0,18 - 0,24
TP 347H FG 0,04-0,10
max.0,75
max.2,00 Rem.
17,0-20,0
9,0-13,0
--
-- 8 x C
--
Super 304H 0,07-0,13
max.0,30
max.1,00 Rem.
17,0-19,0
7,5-10,5
--
2,50-3,50
0,30-0,60
-- N 0,05 - 0,12
Sanicro 25 max.0,08 ? ? Rem.
22,0-24,0
23,0-25,0
-- ? ?
-- N ?
CCA617NiCr23Co12Mo2.4663
0,05-0,08
max.0,30
max.0,30
max.1,5
21,0-23,0 Rem.
8,0-10,0
max.0,05
max.0,03
0,30-0,50
Co 11,0 - 13,0; B 0,002 - 0,005Al 0,80 - 1,30; Pb max. 0,007As max. 0,010; Bi max. 0,010
Alloy 263 0,04-0,08--
max.0,6
max.0,7
19,0-21,0 Rem.
5,6-6,1
max.0,2
--
1,9-2,4
Co 19,0 - 21,0; Ti + Al 2,4 - 2,8Al max. 0,6; B max. 0,0005
Alloy 740 0,03-0,050,3-1,0
0,1-1,0
max.0,7
23,5-25,5 Rem.
0,2-0,8
--
1,8-2,2
1,4-1,8
Co 18,0 - 22,0Al 0,9 - 1,3
Superheater steels
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Chemical composition of austenitic Superheater / Reheater Boiler Tubes
0,05-0,12
0,30-0,60
2,50-3,50
7,5-10,5
17,0-19,0
Rem.max.1,00
max.0,30
0,07-0,13
DMV 304H Cu*
--
8 x C--
9,0-13,0
17,0-20,0
Rem.max.2,00
max.0,75
0,04-0,10
DMV 347H FG
0,18-0,24
0,40-0,50
--
20,8-21,5
24,4-25,0
Rem.1,00-1,40
0,30-0,50
0,05-0,07
DMV 310NNNbCuNiCrFeMnSiC
*) acc. ASME SA-213; code case 2328
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Matching Filler Metal for Super 304 H
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Matching Filler Metal for Super 304H or DMV 304H Cu / GTAW: Thermanit 304H Cu
Chemical composition of GTA-wire in %
Mechanical properties (all weld metal)
0,210,6316,80,9180,0020,0023,20,40,09NNbCuNiMoCrSPMnSiC
27,919,4462354+650/+120290 82 9455,227,8703533RTGTAW
min. 135+650/+1202min. 85min. 35min. 590min. 235RTBM requirement
CVN (ISO-V) [J]
R. o. A. [%]
Elongation [%]
TS [MPa]
YS [MPa]
Test temp. (C/F)
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Matching Filler Metal for Super 304H or DMV 304H Cu / SMAW: Thermanit 304H Cu
Chemical composition (all weld metal) in %
Mechanical properties (all weld metal)
0,2090,382,9116,340,9017,690,0050,0103,340,320,087NNbCuNiMoCrSPMnSiC
39,325,0464350+650/+120288 88 9055,130,1711541RTSMAW
min. 135+650/+1202min. 85min. 35min. 590min. 235RTBM requirement
CVN (ISO-V) [J]
R. o. A. [%]
Elongation [%]
TS [MPa]
YS [MPa]
Test temp. [C/F]
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
GTA-girth welding of Super 304H (DMV 304H Cu) with matching filler metal Thermanit 304H Cu
Welding parameter: GTA-wire rod: 2,4 mm; root: 75 Amps / 14 Vtop layer: 80 Amps / 14 V
Welding position: PF and PCPreheating: noneInterpass temperature:
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Results of GTA-girth welds with Thermanit 304H Cu
Mechanical properties girth weld ( 44,5 x 10 mm; transverse specimen)(Root: rod- 2,0 mm; 100 A; 13 V / Fill passes: rod- 2,4 mm; 135 A; 13 V)
0,450,1893,0515,670,6718,043,330,380,098GTA-wire Thermanit 304H Cu
0,480,1233,188,870,2718,310,690,240,095Base metalNbNCuNiMoCrMnSiC
Chemical composition of GTA-wire in %
Mechanical properties (all weld metal)
22,4521378+500/+932124 130 14223,8727566RT
CVN (ISO-V) [J]
Elongation [%]
TS [MPa]
YS [MPa]
Test temp. [C/F]
BM469+650/+120249 57 67 (A = 0,4 cm)BM / WM617RT
CVN (ISO-V) middle weld [J]
LoFTS [MPa]
Test temp. [C/F]
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Results of GTA-girth welds of DMV 304 H Cu with Thermanit 304H Cu
Mechanical properties girth weld ( 44,5 x 10 mm; transverse specimen)(Root: rod- 2,0 mm; 100 A; 13 V / Fill passes: rod- 2,4 mm; 135 A; 13 V)
Test temp. [C/F]
TS [MPa]
LoF CVN (ISO-V) middle weld [J]
RT 617 BM / WM 49 57 67 (A = 0,4 cm)+650/+1202 469 BM
Outside-: 44,5 mm Outside-: 44,5 mm
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Thermanit 304 H Cu
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Thermanit 304 H Cu
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Thermanit 304 H Cu
Creep rupture properties of Super 304 H - welds
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Welding of Super 304H; 310N and 347H FG
Welding with Ni base filler metal Thermanit 617;
long time creep test are ongoing
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Typical analysis base metal and all weld metal NiCr22Co12Mo9 (2.4627); ERNiCrCoMo-1
0,410,00201,20,3011,0Rest8,721,50,040,060,06FM1,20,00261,10,3011,4Rest8,722,20,090,090,06BMFeBAlTiCoNiMoCrMnSiC
Alloy 617
Thermanit 617 is TV approved to use for welding of the newaustenitic steels 347H FG; Super 304H and 310 N
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
GTA-girth weld: DMV 304H Cu with Ni-base filler metal Thermanit 617
Chemical compositionC Si Mn Cr Mo Ni Nb Cu Al Ti N Co
Base metal 304H Cu 44,5 x 10 mm 0,087 0,2 0,73 18,27 0,25 8,96 0,46 3,02 0,019 - 0,104 -
Filler metal Thermanit 617 0,063 0,32 0,36 22,7 8,9 53,6 - - 1,14 0,41 - 11,59
Mechanical properties at RTYS [MPa] TS [MPa] Elongation [%]
Base metal 304H Cu 44,5 x 10 mm 427 706 40,2
Filler metal Thermanit 617 all weld metal GTAW 477 737 46,5
Welding parameter: wire- 1,2 mm (mechanized welding); 120 Amps / 12 V / vs = 15 cm/min.
Outside- Tube: 44,5 mm Outside- Tube: 44,5 mm
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Thermanit 617
Creep rupture properties of Super 304 H welds
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Chemical composition tube 310N ( 44,5 x 9,3 mm)
0,200,4621,225,61,150,360,059
NNbNiCrMnSiC
Mechanical properties at RT
46,5737477Thermanit 617 all weld metal41,6771359Tube 310N
Elongation A5 [%]TS [MPa]YS [MPa]
Mechanical properties of girth welds at RT (transverse specimen)
WM715DMV 310NLoFTS [MPa]Tube
Welding parameter: wire- 1,2 mm (mechanised welding); 120 Amps / 12 V; vs = 15 cm/min.
Chemical composition all weld metal Thermanit 617 (GTAW)
55,5
Ni
8,93
Mo
21,7
Cr
0,10
Mn
1,140,4111,10,070,063
AlTiCoSiC
Tube welding DMV 310N with Ni-base filler metal Thermanit 617
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Mechanical properties at RT
695 900Requirement
46,5737477All weld metal Thermanit 617LoF: WM723Weld
44
Elongation A5 [%]
772377Tube 310N 51 x 4,5 mm
RemarksTS [MPa]YS [MPa]
Chemical composition
0,27
0,41
-
Ti
0,557,7??47,05,3522,60,370,170,059Weld
1,1411,1--55,58,921,70,100,070,063All weld metal Thermanit 617
--0,200,46520,9-24,51,180,420,065Tube 310N 51 x 4,5 mm
NNiMoCrMn AlCoNbSiC
Tube welding DMV 310N with Ni-base filler metal Thermanit 617
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Thermanit 617
Creep rupture properties of 310 N- welds
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Mechanical properties at RT
46,5737477All weld metal Thermanit 617LoF in BM 347H FG-626-Weld
45,2
61
Elongation A5 [%]
773423Base metal DMV 310N*
632292Base metal DMV 347H FG*
RemarksTS [MPa]YS [MPa]
*) 38 x 6,3 mm
Chemical composition
---0,6545,66,020,440,390,140,049Weld
11,10,411,140,0255,58,9321,750,100,070,063Filler metal Thermanit 617
---0,4420,9-24,41,180,410,070Base metal DMV 310N
-
Al
Base metal DMV 347H FG 11,37
Ni
-
Mo
18,4
Cr
1,48
Mn
--0,90,410,090
CoTiNbSiC
Tube welding 347H FG / 310 N with Ni-base filler metal Thermanit 617
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Welding parameter: Filler metal: Thermanit 617GTA-wire rod: 2,0 mm; root: 55-75 Amps / 13-14 V
fill and top layer: 55-75 Amps / 13-14 VWelding position: PF and PCPreheating: noneInterpass temp.:
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Creep rupture properties of 347 HFG - welds
Thermanit 617
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Main influence:Pre heating temperatureInterpass temperatureHeat inputWeld built upThickness of layersBevel preperationGeometry of jointWeld processWelding parameter
The processing of highly-developed materialsdemands most exact settings and highly-qualified staff.
alloy 230, 263, 617, 740T23, T24
VM12-SHCP92
Ni-BasisSuper 304 H
P23, P24
10CrMo9-1016Mo3; 13CrMo4-5
unalloyed Steels
Parameters
A good weld metal on its own does not guarantee a sound joint , if you do not care for
Power Plant
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Conclusions
- Matching filler metals for Super 304H have been developedand qualified.
- Welding with overmatching filler metal Thermanit 617 isapproved for DMV 310N, 347H FG and Super 304H, but care has tobe taken regarding different thermal expansion coefficients.
- Creep rupture tests of weldments are completed or running.
Tests are running up to > 30.000h.
Int. Conference WELDS 2009, Fort Myers, Florida; June 24-26;, 2009
Ongoing investigations
welding of alloys 230, 263, 617mod. and 740
developing of matching filler metals for 310N
welding of dissimilar alloys
Most important issue:
testing the creep rupture properties of thefiller metals in long term tests
Welding of the austenitic alloys Super 304H, 310N and 347H FG Slide Number 2Slide Number 3Slide Number 4Slide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12Slide Number 13Slide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18Slide Number 19Slide Number 20Slide Number 21Slide Number 22Slide Number 23Slide Number 24Slide Number 25Slide Number 26Slide Number 27Slide Number 28Slide Number 29
Home:
Exit: