AWS A5.28 ER80S-B8
Chromium-Molybdenum Steel Electrodes and Rods — ER80S-B8
ER80S-B8
ER80S-B8 [ER55S-B8] is used for welding base metal of similar compositions, usually in the form of pipe or tubing. The alloy is an air-hardening material, and therefore, when welding with this filler metal, preheating and post-weld heat treatment are required. In particular this welding wire is used for joining 9Cr-1Mo steels for high temperature creep service, such as A199, A200, A213, A217 C12 (cast), A335 Grade P9, and A336 Grade F9. It features corrosion resistance from hydrogen gas, steam, and high sulfur crude oils. This electrode is similar to that previously classified as ER505 in AWS A5.9-93.
Specifications:
- AWS A5.28 ER80S-B8
- UNS S50480
| Nominal Chemical Composition (%) | Tensile Strength | Yield Strength | Elongation | Average Impact Strength | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | Si | P | S | Ni | Cr | Mo | V | Ti | Zr | Al | Cu | TOE | psi (min) | MPa (min) | psi (min) | MPa (min) | % (min) | 20 ft•lbf @ |
| 0.10 max | 0.40-0.70 | 0.50 max | 0.025 max | 0.025 max | 0.50 max | 8.00-10.50 | 0.80-1.20 | – | – | – | – | 0.35 max | 0.50 max | 80,000 | 550 | 68,000 | 470 | 17 | Not Required |