Product Description: Stellite 6 Alloy / CoCr28W4 / 2.4979 / UNS R30006
Stellite 6 (CoCr28W4 / 2.4979 / UNS R30006) is a cobalt-chromium heat-resistant and wear-resistant alloy designed for operation under high temperatures, severe wear conditions, and corrosive environments. The material is characterized by high hardness, excellent abrasion resistance, and outstanding oxidation resistance.
General Technical Characteristics
Stellite 6 alloy offers high mechanical strength, corrosion resistance, and the ability to retain performance properties at elevated temperatures. The material is widely used for components operating under friction, impact loads, and aggressive environments.
Key properties:
- high wear resistance
- excellent corrosion resistance
- oxidation resistance
- high hardness at elevated temperatures
Chemical Composition
The alloy contains:
- Cobalt (Co): base element
- Chromium (Cr): approx. 27–30%
- Tungsten (W): 4–6%
- Carbon (C): approx. 1%
- Nickel (Ni): up to 3%
- Iron (Fe): up to 3%
This composition provides high hardness and wear resistance.
Mechanical Properties
The alloy demonstrates:
- high hardness
- excellent resistance to abrasive and adhesive wear
- resistance to thermal fatigue
- stability of properties at elevated temperatures
Applications
Stellite 6 alloy is used for manufacturing and hardfacing of:
- valves and valve seats
- cutting tools
- pump and turbine components
- chemical processing equipment parts
- components operating under severe wear conditions
The material is widely applied in power generation, oil and gas, chemical, and mechanical engineering industries.
Features
Key advantages include:
- high wear resistance
- excellent corrosion resistance
- retention of hardness at elevated temperatures
- long service life
Supply Formats and Standards
The material is supplied as:
- bars
- hardfacing powders
- cast ingots
- welding consumables
Complies with standards:
- UNS R30006
- DIN 2.4979
- CoCr28W4
Stellite 6 alloy is an effective solution for manufacturing and restoration of components operating under severe wear, high temperatures, and aggressive environments, where high reliability and durability are essential.
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