Cobalt alloys
Stellite 6
Stellite is a Kennametal alloy trademark. A weld consumable, deposited overlay and casting are distinct purchased products.
Identity / state reference
What distinguishes this material
Carbide-bearing general wear alloy. Stellite 6B wrought stock is not automatically equivalent to a Stellite 6 hardfacing deposit.
- Designation in this reference
- Co-Cr-W-C alloy; product-route-specific specification
- Forms covered by the sources
- Hardfacing consumable / deposited layer
- Cast component
- States to distinguish or confirm
- As deposited: process and dilution recorded
- As cast / treated: certificate required
- Temperature and exposure
- A service-temperature statement is not an allowable stress or a guarantee at temperature. Use the specified product condition and exposure duration.
Other search names in these sources
Stellite 6 · R30006
Read the scope above: a source’s related product name is not a blanket interchangeability statement.
Property evidence for a stated condition
No condition-specific numerical table is reproduced here
The linked sources establish the identity and the stated product/state scope. Obtain the row for your actual form, section, treatment and test conditions before adopting strength, hardness or a thermal limit.
Resolve these conditions next
- Is this a casting, welding rod, powder, or finished overlay?
- What process, substrate dilution and final hardness were specified?
For machining, take the exact grade, supplied condition and measured hardness where applicable into the tool maker’s application data. A generic material-family speed is not a substitute for an operation and tool-specific recommendation.
Sources and what they establish
Reviewed 23 October 2026. A source’s publication date and the review date are different. The scope below identifies the fields checked.
Kennametal Stellite: cobalt-based alloys
Stellite 6 and 21 identities and route-sensitive behavior; listed UNS numbers vary with product route.
Kennametal Stellite: cobalt-based alloys ↗Source identity, a named product example and a supplied-batch certificate are different evidence. Cross-standard similarity does not approve substitution.
Corrections from the previous article
- Remove ASTM F75 (similar) as a substitution cue; it does not establish Stellite 6 identity.
- The old statement only carbide or ceramic can cut it contradicts its own HSS table; remove both unsupported prescriptions.
Other references in Cobalt alloys
Related references, not equivalent substitutes.