Er90s-B3
AWS A5.28 Class ER90S-B3
90S-B3 is a low alloy fillerdesigned to produce high strengths on2 1/4 & Cr-1 Mo steels found in high temperature/high pressure piping and vessels. It may also be used on carbon steels to Cr-Mo base metals. Controlled preheat, interpass and postheat treatment may be needed to avoid cracking.
TYPICAL WIRE CHEMISTRY (%)
- | ER90S-B3 | AWS Spec |
|---|---|---|
C | 0.10 | 0.07-0.12 |
Mn | 0.63 | 0.40-0.70 |
Si | 0.46 | 0.40-0.70 |
P | 0.012 | 0.025 max. |
S | 0.012 | 0.025 max. |
Mo | 1.06 | 0.90-1.20 |
Cr | 2.55 | 2.30-2.70 |
Ni | 0.10 | 0.20 max. |
Cu | 0.11 | 0.35 max. |
Typical mechanical properties of weld metal (C02 shielding gas)
- | ER90S-B3 | AWS Spec |
|---|---|---|
Yield strength (psi) | 80,500 | 78,000 min |
Ultimate tensile strength (psi) | 94,500 | 90,000 min |
Elongation in 2" (%) | 19 | 17 min |
Charpy V-notch at 0 F (ft. lbs) | N/A |