Description
ER90S-B3 is used to weld 2¼% Cr – 1% Mo steels used for high temperature, high pressure piping and pressure vessels. It is also used for joining carbon steel and Cr-Mo alloys. Careful control of preheat, interpass temperatures, and postweld heat treatment is essential to prevent cracking. When using 90S-B3 in the as-welded condition special care is required due to the higher strength levels. It can be used in all positions. Recommended shielding gas for GMAW is Argon/1-5% O2.
| Cu | C | Ni | S | Other | Cr | Mn | Mo | Si | P |
| 0.35 max | 0.07-1.12 | 0.20 max | 0.025 max | 0.50 max | 2.30-2.70 | 0.40-0.70 | 0.90-1.20 | 0.40-0.70 | 0.025 max |
- Specifications: AWS A5.28, SFA 5.28
- Classification: ER90SB3
- Type of Power: GMAW-DCEP, GTAW-DCEN
| TYPICAL DEPOSIT CHARACTERISTICS | ||||
|---|---|---|---|---|
|
