Class: ERCCoCr-E
AWS: A5.21
Conforms to Certification: AWS A5.21 ASME SFA A5.21
| AWS Chemical Composition Requirements | |
| C = 0.15 – 0.40 | Mo = 4.5 – 7.0 |
| Mn = 2.0 max | Fe = 5.0 max |
| Si = 1.5 max | W = 0.50 max |
| Cr = 25 – 30 | Co = Remainder |
| Ni = 1.5 – 4.0 | Other = 1.0 max |
Available Sizes
.045 x 33 lb spool
1/16 x 33 lb Spool
Description
Cobalt Alloy #21 (ERCCoCr-E) flux-cored wire has excellent work hardenability, high temperature, strength, and impact resistance. Type 21 is a good choice for valve trim and steam and fluid control valve bodies and seals. It bonds well to all weldable steels, including stainless steel.
| Deposited Chemical Composition % (Typical) | |
| C = 0.3 | Mo = 5.4 |
| Mn = 0.7 | Fe = 1.8 |
| Si = 0.5 | W = 0.10 |
| Cr = 27.4 | Co = Balance |
| Ni = 2.4 | |
