IDENTIFICATION
GM 90S-B3, ER 90SB3
CLASSIFICATION
AWS/SFA 5.28: ER 90S-B3
DESCRIPTION
Copper coated 2.4% Cr / 1.0 % Mo alloyed solid wire for MIG welding creep resisting steels of similar composition, used in steam generation plant operating at temperature upto 600ºC. 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.
CHEMICAL ANALYSIS (RANGE) %
| C | Mn | Si | Cr | Cu | Ni | Mo | S | P |
| 0.07 - 0.12 | 0.40 - 0.70 | 0.40 - 0.70 | 2.30 - 2.70 | 0.35 max | 0.20 max | 0.9 - 1.20 | 0.025 max | 0.025 max |
MECHANICAL PROPERTIES (RANGE)
| TS (N/mm²) | YS (N/mm²) | EL (%) (L=4D) |
| 630 -720 | 550 - 630 | 18 - 25 |
TYPICAL APPLICATIONS
SHIELDING GAS : Argon + 3 to 5% CO2
WELDING CURRENT : DC (-)
PREHEAT AND INERPASS TEMP : 150 – 250°C
PACKING PARAMETERS
| Size (mm) | Weight / Spool (kg) |
| 0.8 | 12.5 / 15.0 |
| 1.2 | 12.5 / 15.0 |
| 1.6 | 12.5 / 15.0 |