Stellite 6
Stellite® 6 (UNS R30006) is the general-purpose member of the cobalt–chromium wear family — chromium 27-32%, tungsten 3.0-6.0% and carbon 0.9-1.4%. The carbon and tungsten form the hard carbides that carry the wear resistance, and at this level they balance hardness against enough toughness to survive impact.
Key Properties
- Carbon 0.9-1.4% with tungsten 3.0-6.0% — the carbide-forming pair, at the level that balances hardness against toughness.
- Chromium 27-32% on a cobalt balance, giving corrosion and oxidation resistance alongside the wear.
- Retains hardness at temperature, where hardened steels temper back.
- Stellite 12 is harder and Stellite 21 tougher — the three differ mainly in carbon.
Applications
- Valve seats and trim
- Cutting tools and saw tips
- Pump sleeves and wear rings
- Hardfacing deposits
Available Forms
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | R30006 |
| Density | 8.44 g/cm3 |
| Melting range | 1250-1360 °C |
Identifiers and physical constants for Stellite 6. A dash means no such designation is published for this grade.
Aurico Alloys LLP supplies Stellite 6 across the forms above with material test certificates (EN 10204 3.1) and export-ready packaging from Mumbai, India. Chemistry and mechanical data for each product form are on the form pages linked above. Contact us for stock availability and pricing.