ECoCr-B (Cobalt 12) Cobalt Hardfacing & Wear-resistant Welding Electrode
Alloy Type: A5.13, SOLID SURFACING Electrodes and Welding Rods, A5.13
ECoCr-B Cobalt Alloy 12 could be considered an intermediate alloy between Cobalt Alloy 6 and Cobalt Alloy 1. It contains a higher fraction of hard, brittle carbides than Cobalt Alloy 6, and has increased resistance to low-angle erosion, abrasion, and severe sliding wear while retaining reasonable impact and cavitation resistance. Cobalt Alloy 12 is often used self-mated or running against Cobalt Alloy 6 or 1. The higher tungsten content provides better high-temperature properties compared to Cobalt Alloy 6, and it can be used at temperatures up to about 700⁰C. Cobalt Alloy 12 is typically used for cutting tools that need to withstand abrasion, heat and corrosion.
Typical Applications: chain saw bars; saw teeth; extrusion dies
| AWS Class: ECoCr-B | Certification: AWS A5.13/A5.13M:2010 |
| Alloy: ECoCr-B | ASME SFA A5.13 |
| Welding Position: F, V, OH, H |
Current: *NS |
| Tensile Strength, kpsi: | *NS |
| Yield Strength, kpsi: | *NS |
| Elongation %: | *NS |
*NS Not Specified
Typical Wire Chemistry as per AWS A5.13 (single values are maximum)
| C | Mn | Si | Cr | Ni | Mo | Fe | W | Co | Other |
| 1.0-1.7 | 2.0 | 2.0 | 25-32 | 3.0 | 1.0 | 5.0 | 7.0-9.5 | Rem | 1.0 |