| Co | Cr | W | C | Others | Hardness | Density | Melting Range |
| Base | 27-32 | 3-6 | 0.9-1.4 | Ni, Fe, Si, Mn, Mo | 36-45 HRC 380-490 HV | 8.44 g/cm3 0.305 lb/in3 | 1250-1360ºC 2282-2480ºF |
Stellite cobalt-based alloys consist of complex carbides in an alloy matrix. They are resistant to wear, galling, and corrosion and retain these properties at high temperatures. Their exceptional wear resistance is due mainly to the unique inherent characteristics of the hard carbide phase dispersed in a CoCr alloy matrix.
Stellite 6 is the most widely used of the wear-resistant cobalt-based alloys and exhibits good all-around performance. It is regarded as the industry standard for general-purpose wear-resistance applications, has excellent resistance to many forms of mechanical and chemical degradation over a wide temperature range, and retains a reasonable level of hardness up to 500°C (930°F). It also has good resistance to impact and cavitation erosion. Stellite 6 is ideally suited to a variety of hardfacing processes and can be turned with carbide tooling. Examples
include valve seats and gates, pump shafts and bearings, erosion shields and rolling couples. It is often used self-mated.
Stellite 6 can be supplied to the following specifications:
| SPECIFICATION | PRODUCT FORM |
| UNS R30006 | Rod, Castings |
| UNS R30106 | P/M Parts |
| UNS W73006 | Electrode |
| UNS W73036 | Wire |
| AMS 5387, AMS 5373 | Castings |
| AMS 5788 | Rod, Wire |
| AMS 7239 | P/M Parts |
| SPECIFICATION | PRODUCT FORM |
| AWS A5.21 / ASME BPVC IIC SFA 5.21 ERCoCr-A | Rod |
| AWS A5.21 / ASME BPVC IIC SFA 5.21 ERCCoCr-A | Wire |
| AWS A5.13 / ASME BPVC IIC SFA 5.13 ECoCr-A | Electrode |
