Description:
ER90S-B3 is a copper-coated wire for use with the MIG/MAG process, which deposits a 2.4% Cr/1.0% Mo weld metal. It is intended for welding creep-resisting steels of similar composition, used in steam generation plant operating at temperatures up to 600°c, e.g. DIN 10 CrMo 9 10, GS-18 CrMo 9 10, GS-17 CrMo V 5 11, BS 3604 Grades 622 etc. Also suitable for use in the chemical and petrochemical industries where resistance to hydrogen attack, corrosion from sulphur-bearing crude oil, and stress corrosion cracking in sour environments is required. Preheat and interpass temperature of 200-250°c is recommended. Post-weld heat treat at 700°c.
Welding Current: DC+ Wire composition, wt.%
| |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
Cu |
| Min |
0,07 |
0,40 |
0,40 |
|
|
2,30 |
|
0,90 |
|
| Typical |
0,08 |
0,60 |
0,60 |
0,007 |
0,008 |
2,50 |
0,04 |
1,0 |
0,13 |
| Max |
0,12 |
0,70 |
0,70 |
0,025 |
0,025 |
2,70 |
0,20 |
1,20 |
0,35 |