Stellite 6 Valve Seat | Custom Cobalt Alloy Valve Seat
- High-performance Stellite 6 valve seat (UNS R30006) Manufactured from cobalt-chromium-tungsten alloy Excellent wear resistance and galling resistance Outstanding corrosion resistance in harsh chemical environments Superior high-temperature strength and creep resistance Maintains hardness at elevated temperatures (up to 800°C) Custom sizes and shapes available per customer requirements Ideal for oil and gas valves, chemical processing, and high-pressure applications
Description Of Stellite 6 Valve Seat
Stellite 6 Valve Seat is a high-performance valve seat manufactured from Stellite 6 (UNS R30006), a cobalt-chromium-tungsten alloy known for its exceptional wear resistance, corrosion resistance, and high-temperature strength. As a custom cobalt alloy valve seat supplier, we provide valve seats in custom sizes and shapes tailored to specific valve designs and application requirements.
Stellite 6 is one of the most widely used cobalt-based alloys, containing approximately 28% chromium, 4.5% tungsten, and 1.2% carbon. Its unique microstructure, featuring hard carbide particles dispersed in a tough cobalt matrix, provides outstanding resistance to abrasion, erosion, and galling. The alloy maintains its hardness and mechanical properties at elevated temperatures up to 800°C, making it ideal for high-temperature valve applications.
Custom cobalt alloy valve seats are available in custom sizes and shapes, with surface finishes including machined, ground, and polished. Typical applications include oil and gas valves (gate valves, ball valves, check valves), chemical processing valves, and high-pressure valve systems.
Features Of Stellite 6 Valve Seat
Excellent Wear Resistance: Stellite 6 offers superior resistance to abrasion, erosion, and galling.
Outstanding Corrosion Resistance: Resists harsh chemicals, acids, and seawater.
Superior High-Temperature Strength: Maintains hardness and mechanical properties up to 800°C.
Good Impact Resistance: Cobalt matrix provides toughness to withstand impact loads.
Non-Sparking: Suitable for use in hazardous environments.
Customizable Dimensions: Custom sizes and shapes available per customer requirements.
Surface Finishes: Machined, ground, polished.
Specifications Of Stellite 6 Valve Seat
| Parameter | Specification |
|---|---|
| Material | Cobalt-chromium-tungsten alloy (Stellite 6) |
| UNS Designation | R30006 |
| Density | 8.44 g/cm³ |
| Melting Point | 1,285 – 1,350°C |
| Hardness | 38 – 45 HRC (as-cast) |
| Tensile Strength | Up to 900 MPa |
| Yield Strength | Up to 700 MPa |
| Elongation | < 1% |
| Dimensions | Customizable |
| Surface Finish | Machined, ground, polished |
Chemical Composition (Typical):
| Element | Content |
|---|---|
| Co | Balance |
| Cr | 27.0 – 30.0% |
| W | 4.0 – 5.0% |
| C | 1.0 – 1.4% |
| Ni | ≤ 3.0% |
| Fe | ≤ 3.0% |
| Si | ≤ 2.0% |
| Mn | ≤ 2.0% |
| Mo | ≤ 1.5% |

