ER90S-B3
Class: ER90S-B3
AWS: A5.28
Conforms to Certification: AWS A5.28 | ASME SFA A5.28
Weld Process: Mig (GMAW) Welding Processes
| AWS Chemical Composition Requirements | |
| C = 0.07 – 0.12 | Mn = 0.40 – 0.70 |
| Si = 0.40 – 0.70 | P = 0.025 max |
| S = 0.025 max | Ni = 0.20 max |
| Cr = 2.30 – 2.70 | Mo = 0.90 – 1.20 |
| Cu = 0.35 max | Other = 0.50 max |
Application
ER90S-B3 is for welding 2¼ chrome, 1 moly steels, pipe material in the petroleum industry for elevated temperature service. Requires controlled preheat, inter-pass and post weld treatment.
| Deposited Chemical Composition % (Typical) | ||
| C = 0.10 | P = 0.009 | Cr = 2.55 |
| Mn = 0.62 | S = 0.008 | Mo = 1.08 |
| Si = 0.48 | Ni = 0.06 | Cu = 0.12 |
| Deposited All Weld Metal Properties % (AW) | |
| Tensile Strength | 94,000 psi |
| Yield Strength | 80,500 psi |
| Elongation | 19% |
Deposited Charpy-V-Notch Impact Properties %
At +68ºF 80 ft. lbs.
Available Sizes & Recommended Welding Parameters |
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| Process | Diameter of Wire | Voltage (V) | Amperage (A) | Gas |
| MIG – Sprayer Transfer | .035 inches | 28 – 32 | 165 – 200 | 98% Argon + 2% Helium |
| .045 inches | 30 – 34 | 180 – 220 | 75% Argon + 25% CO2 | |
| 1/16 inches | 30 – 34 | 230 – 260 | 100% CO2 | |
| MIG – Short Arc Transfer | .035 inches | 22 – 25 | 100 – 140 | 100% CO2 |
| .045 inches | 23 – 26 | 120 – 150 | 75% Argon + 25% CO2 | |