Structure diagramfor stainless steel weld · PDF file- DeLong Diagram /2/ ... Lincoln Electric...
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Structure diagram for stainless steel weld metal www.lincolnelectriceurope.com References /1/ Schaeffler A.L. 1949. Metal progress, 56 (11) p.680-680B /2/ DeLong W.T. 1974. Welding Journal, 53 (8) p. 273s-286s /3/ Siewert T.A., McCowan C.N., Olson D.L. 1988. Welding Journal 12 (1988) p. 289s- 298s /4/ Kotecki D.J., Siewert T.A. 1992. Welding Journal 5 (1992) p. 171s-178s /5/ Kotecki D.J. 1982. Welding Journal Nov. (1982) p.352s- 361s /6/ Schafmeister P., Ergang R. 1939. Arch. Eisenhüttenwesen 12 (1939) p. 459-464 /7/ Farrar J.C.M. 2004. IIW DOC II-1531-04 Ferrite determination • Optical scanning Accuracy depends on etching and equipment. Related standard: ASTM E 562 - 99 • Magnet tearing-off force Standards for Ferrite Number (FN) determination: ISO 8249 and AWS A4.2 - 97. Cover range of FN 0-85. Torsion balance (e.g. Magne Gage) calibrated with coating thickness standards (NIST). Other devices, to be calibrated on secondary standards. • Magnetic Induction Devices as Fisher Ferritoscope, to be calibrated on secondary standards. • The measurement of Ferrit Number (FN) in Real Weldments. Final Report of IIW Round Robin /7/ • Chemical composition, position in structure diagrams - Schaeffler Diagram /1/ - WRC 1988 Diagram /3/ - DeLong Diagram /2/ - WRC 1992 Diagram /4/ Lincoln Electric Europe combined the latest and most accura- te WRC 1992 diagram with the basis, the Schaeffler Diagram for optimal estimation of structure and ferrite content. A most complete range of consumables for welding CrNi-steel grades Weld Metal structure Classification 1 ) Position in Welding processes: Applocation Diagram SMAW FCAW GTAW/GMAW SAW Austenitic 19 9 L A Vertarosta 304L Cor-A-Rosta 304L LNT/LNM 304LSi LNS 304L / P2000 General corrosion Arosta/Limarosta 304L Limarosta 304L-130 Cor-A-Rosta P304L Jungo 304L 19 9 Nb A Arosta 347/Jungo 347 Cor-A-Rosta 347 LNT/LNM 347Si LNS 347 / P2000 19 12 3 L B Vertarosta 316L Cor-A-Rosta 316L LNT/LNM 316LSi LNS 316L / P2000 Arosta/Limarosta 316L Limarosta 316L-130 Cor-A-Rosta P316L Jungo 316L 19 12 3 Nb B Arosta 318/Jungo 318 LNT/LNM 318Si LNS 318 / P2000 Ferritic- Austenitic 22 9 3 N L C Arosta 4462 Cor-A-Rosta 4462 LNT/LNM 4462 LNS 4462 / P2000 (duplex/super-duplex) Jungo 4462 Cor-A-Rosta P4462 Stress corrosion Z 25 7 4 N L EM LNT/LNM Zeron 100M LNS Zeron 100M / P2000 25 9 4 N L EX Jungo Zeron 100X LNT/LNM Zeron 100X LNS Zeron 100X / P2000 Fully Austenitic 18 16 5 N L F Arosta 4439/Jungo 4439 Cor-A-Rosta 317L LNT/LNM 4439Mn LNS 4439Mn / P2000 Special corrosion 19 13 4 N L G Jungo 4455 LNT/LNM 4455 LNS 4455 / P2000 20 25 5 Cu H Jungo 4500 LNT/LNM 4500 LNS 4500 / P2000 25 22 2 N L I Jungo 4465 LNT/LNM 4465 LNS 4465 / P2000 27 31 4 Cu L J NiCro 31/27 LNT/LNM 31/27 LNS 31/27 / P2000 Austenitic-Ferritic 18 8 Mn K Arosta 307/Jungo 307 LNT/LNM 307Mn LNS 307 / P2000 Dissimilar joints / 20 10 3 L Nichroma Buffer layers 23 12 L M Arosta/Limarosta 309S Cor-A-Rosta 309L LNT/LNM 309LSi LNS 309L / P2000 Limarosta 309S-130 Cor-A-Rosta P309L 23 12 Nb M Arosta 309Nb 23 12 2 L N Arosta 309Mo Cor-A-Rosta 309MoL Nichroma 160 Cor-A-Rosta P309MoL 29 4 O Arosta 329 LNS 329 / P2000 29 9 P Limarosta 312 Austenitic 19 9 H Q Arosta 304H LNT/LNM 304H LNS 304H / MIL 800H High temperature 22 12 R Arosta 309H 25 20 S Intherma 310 LNT/LNM 310 LNS 310 / P2000 60 70 80 %Fe 1,3 1,4 1,5 1,6 1,7 Correlation % Ferrite & Ferrite Number Volumetric % Ferrite (estimated NFN) correlates with Ferrite Number: NFN = F N f Factor f, depends on iron content (%Fe) in weld metal /5/ Temperature in ºC S+ S++ S+ + + + ++ S S+ S S++ S+ + + + ++ Constitution Diagrams Solidification structure schematic in binary constitution diagrams /6/ Fe-Cr for 70% Fe Fe-Cr for 60% Fe Solidification mode A: Fully austenitic () at room temperature AF: Primary austenite (), interdendritic ferrite () FA: Peritectic solidification (+), transformation on cooling to austenite; remaining ferrite in network F: primary ferrite (), formation of austenite () in ferrite () matrix Arosta 4439 FN=0 Solidification mode: A Arosta 309H FN=3 Solidification mode: AF Arosta 316L FN=7 Solidification mode: FA Limarosta 309S FN=15 Solidification mode: FA Arosta 4462 FN=35 Solidification mode: F 20 m 20 m 20 m 20 m 20 m Ferrite in the weld metal structure 1 ) Alloy symbols as used in EN standards (viz. EN 1600, EN 12072 and EN 12073 Schaeffler diagram: Cr-equiv.=Cr+Mo+1.5Si+0.5Nb Schaeffler diagram: Ni-equiv.=Ni+30C+0.5Mn
Transcript of Structure diagramfor stainless steel weld · PDF file- DeLong Diagram /2/ ... Lincoln Electric...
Structure diagram for stainless steel weld metal
www.lincolnelectriceurope.com
References/1/ Schaeffler A.L. 1949. Metal
progress, 56 (11) p.680-680B/2/ DeLong W.T. 1974. Welding
Journal, 53 (8) p. 273s-286s/3/ Siewert T.A., McCowan C.N.,
Olson D.L. 1988. WeldingJournal 12 (1988) p. 289s-298s
/4/ Kotecki D.J., Siewert T.A.1992. Welding Journal 5(1992) p. 171s-178s
/5/ Kotecki D.J. 1982. WeldingJournal Nov. (1982) p.352s-361s
/6/ Schafmeister P., Ergang R.1939. Arch. Eisenhüttenwesen12 (1939) p. 459-464
/7/ Farrar J.C.M. 2004.IIW DOC II-1531-04
Ferrite determination• Optical scanning Accuracy depends on etching and
equipment. Related standard: ASTM E 562 - 99• Magnet tearing-off force Standards for Ferrite Number
(FN) determination: ISO 8249 and AWS A4.2 - 97. Coverrange of FN 0-85. Torsion balance (e.g. Magne Gage) calibrated with coating thickness standards (NIST).Other devices, to be calibrated on secondary standards.
• Magnetic Induction Devices as Fisher Ferritoscope, to be calibrated on secondary standards.
• The measurement of Ferrit Number (FN) in RealWeldments. Final Report of IIW Round Robin /7/
• Chemical composition, position in structure diagrams- Schaeffler Diagram /1/ - WRC 1988 Diagram /3/- DeLong Diagram /2/ - WRC 1992 Diagram /4/
Lincoln Electric Europe combined the latest and most accura-te WRC 1992 diagram with the basis, the Schaeffler Diagramfor optimal estimation of structure and ferrite content.
A most complete range of consumables for welding CrNi-steel gradesWeld Metal structure Classification 1) Position in Welding processes:
Applocation Diagram SMAW FCAW GTAW/GMAW SAW
Austenitic 19 9 L A Vertarosta 304L Cor-A-Rosta 304L LNT/LNM 304LSi LNS 304L / P2000General corrosion Arosta/Limarosta 304L
Limarosta 304L-130 Cor-A-Rosta P304LJungo 304L
19 9 Nb A Arosta 347/Jungo 347 Cor-A-Rosta 347 LNT/LNM 347Si LNS 347 / P2000
19 12 3 L B Vertarosta 316L Cor-A-Rosta 316L LNT/LNM 316LSi LNS 316L / P2000Arosta/Limarosta 316LLimarosta 316L-130 Cor-A-Rosta P316LJungo 316L
19 12 3 Nb B Arosta 318/Jungo 318 LNT/LNM 318Si LNS 318 / P2000
Ferritic- Austenitic 22 9 3 N L C Arosta 4462 Cor-A-Rosta 4462 LNT/LNM 4462 LNS 4462 / P2000(duplex/super-duplex) Jungo 4462 Cor-A-Rosta P4462Stress corrosion Z 25 7 4 N L EM LNT/LNM Zeron 100M LNS Zeron 100M / P2000
25 9 4 N L EX Jungo Zeron 100X LNT/LNM Zeron 100X LNS Zeron 100X / P2000
Fully Austenitic 18 16 5 N L F Arosta 4439/Jungo 4439 Cor-A-Rosta 317L LNT/LNM 4439Mn LNS 4439Mn / P2000Special corrosion 19 13 4 N L G Jungo 4455 LNT/LNM 4455 LNS 4455 / P2000
20 25 5 Cu H Jungo 4500 LNT/LNM 4500 LNS 4500 / P2000
25 22 2 N L I Jungo 4465 LNT/LNM 4465 LNS 4465 / P2000
27 31 4 Cu L J NiCro 31/27 LNT/LNM 31/27 LNS 31/27 / P2000
Austenitic-Ferritic 18 8 Mn K Arosta 307/Jungo 307 LNT/LNM 307Mn LNS 307 / P2000Dissimilar joints / 20 10 3 L NichromaBuffer layers
23 12 L M Arosta/Limarosta 309S Cor-A-Rosta 309L LNT/LNM 309LSi LNS 309L / P2000Limarosta 309S-130 Cor-A-Rosta P309L
23 12 Nb M Arosta 309Nb
23 12 2 L N Arosta 309Mo Cor-A-Rosta 309MoLNichroma 160 Cor-A-Rosta P309MoL
29 4 O Arosta 329 LNS 329 / P2000
29 9 P Limarosta 312
Austenitic 19 9 H Q Arosta 304H LNT/LNM 304H LNS 304H / MIL 800HHigh temperature 22 12 R Arosta 309H
25 20 S Intherma 310 LNT/LNM 310 LNS 310 / P2000
60 70 80 %Fe
1,3
1,4
1,5
1,6
1,7
Correlation % Ferrite &Ferrite NumberVolumetric % Ferrite (estimated NFN) correlates with Ferrite Number: NFN = FN
f
Factor f, depends on iron content (%Fe) inweld metal /5/
Tem
per
atur
e in
ºC
S+�
S+�+�S+�
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S
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S
S+�+�S+�
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ConstitutionDiagramsSolidificationstructure schematic in binary constitution diagrams /6/
Fe-Cr for 70% Fe
Fe-Cr for60% Fe
Solidification modeA: Fully austenitic (�) at room temperature
AF: Primary austenite (�), interdendritic ferrite (�)
FA: Peritectic solidification (�+�), transformationon cooling to austenite; remaining ferrite innetwork
F: primary ferrite (�), formation of austenite (�)in ferrite (�) matrix
Arosta 4439FN=0 Solidification mode: A
Arosta 309HFN=3 Solidification mode: AF
Arosta 316LFN=7 Solidification mode: FA
Limarosta 309SFN=15 Solidification mode: FA
Arosta 4462FN=35 Solidification mode: F
20 �m 20 �m 20 �m 20 �m 20 �m
Ferrite in the weld metal structure
1) Alloy symbols as used in EN standards (viz. EN 1600, EN 12072 and EN 12073
Schaeffler diagram: Cr-equiv.=Cr+Mo+1.5Si+0.5Nb
Sch
aeffl
er d
iagr
am:
Ni-e
quiv.
=N
i+30
C+
0.5M
n
