Cobalt #6
Class: ERCCoCr-A
AWS: A5.21
Conforms to Certification: AWS A5.21 | ASME SFA A5.21
Weld Process: GMAW Flux Core
| AWS Chemical Composition Requirements | |
| C = 0.7 – 1.4 | Mo = 1.0 max |
| Mn = 2.0 max | Fe = 5.0 max |
| Si = 2.0 max | W = 3.0 – 6.0 |
| Cr = 25 – 32 | Co = Remainder |
| Ni = 3.0 max | Other = 1.0 max |
Available Sizes
.045 x 33 lb spool
1/16 x 33 lb spool
Application
Cobalt #6 Flux Cored Wire (ERCCoCr-A) is a tubular wire version of a cobalt alloy that produces a medium hardness cobalt-chromium deposit for high temperature applications with good abrasive wear and good impact resistance. Chromium carbides contained in the deposit have excellent resistance to many forms of chemical and mechanical degradation, including galling and cavitation erosion. It bonds well with all weldable steels, including stainless.
| Deposited Chemical Composition % (Typical) | |
| C = 1.2 | Mo = 0.1 |
| Mn = 0.9 | Fe = 2.4 |
| Si = 0.6 | W = 4.0 |
| Cr = 28.1 | Co = Balance |
| Ni = 2.5 | |
Deposited All Weld Metal Properties % (AW)
Hardness (2 layer) HRC 38 – 40
Deposited Charpy-V-Notch Impact Properties %
Not Applicable
Recommended Operation of Welding Rods
Flat Welding
| Diameter | Amps DCEP | Volts | Shielding Gas |
| .045 | 180 – 200 | 25 – 27 | argon |
| 1/16 | 280 – 300 | 26 – 28 | argon |