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Stellite8 Cobalt Alloy Bar – Top Quality Cobalt Alloy Bar China Manufacturer
Stellite8 Cobalt Alloy Bar, a high-performance cobalt-based alloy, provides excellent wear resistance, corrosion resistance, and high-temperature stability. This cobalt chromium alloy is ideal for industries like aerospace, power generation, and chemical processing.
Price: Contact Us for a Custom Quote
Contact our sales team for a quote on Stellite8 Cobalt Alloy Bar. Pricing varies based on specifications, quantity, and customization requirements.
Specifications
- Diameter: 4 mm to 100 mm
- Length: Up to 3500 mm (custom lengths available)
- Surface Treatment: Polished, ground, or as-cast
- Tolerance: ±0.04 mm (standard)
- Form: Round Bar, Round Rod
Key Features (Advantages)
- Exceptional wear resistance for long-lasting performance
- Strong corrosion resistance in aggressive environments
- High-temperature stability up to 1000°C
- Reliable cobalt alloy properties for demanding conditions
- Customizable dimensions for versatile applications
Applications of Stellite8 Cobalt Alloy Bar
Stellite8 Cobalt Alloy Bar serves industries requiring durable materials:
- Aerospace: Turbine blades, valve components
- Power Generation: Boiler parts, erosion shields
- Chemical Processing: Pump shafts, valve seats
- Medical: Orthopedic implants (cobalt chrome)
- Automotive: High-wear engine components
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Cobalt (Co) | Balance (50-55%) |
| Chromium (Cr) | 28-32% |
| Tungsten (W) | 8-10% |
| Carbon (C) | 1.1-1.7% |
| Nickel (Ni) | ≤3% |
| Iron (Fe) | ≤2% |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 950 MPa |
| Yield Strength | 700 MPa |
| Elongation | 1-2% |
| Hardness (HRC) | 40-48 |
Chemical Properties
Stellite8 Cobalt Alloy Bar resists acids (e.g., sulfuric, hydrochloric) and alkalis effectively. It complies with environmental regulations like RoHS, ensuring safe use in restricted industries. Its cobalt base alloy structure ensures stability in corrosive conditions.
Things to Note (Limitations)
- Not suitable for temperatures above 1000°C due to potential softening
- Moderate ductility may lead to cracking under high impact
- Requires carbide tools for machining due to hardness
- Avoid prolonged exposure to highly alkaline environments
Corrosion Data for Stellite8 Cobalt Alloy Bar
| Environment | Corrosion Resistance |
|---|---|
| Atmospheric (Air) | Excellent |
| Mild Chemical (Dilute Acids) | Very Good |
| Seawater | Good |
| High-Temperature Oxidation | Good |
Best Welding and Manufacturing Practices
Recommended welding methods for Stellite8 Cobalt Alloy Bar include TIG and plasma arc welding with cobalt-based fillers. Machining requires carbide tools due to hardness. Hot forging is viable, but cold working is limited due to moderate ductility.
What Customers Say About
Frequently Asked Questions
Q: How does Stellite8 differ from other cobalt-based alloys?
A: Stellite8 has lower carbon content than Stellite20, offering better ductility but slightly less hardness.
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Q: What are the main cobalt alloy uses?
A: Used in high-wear components, medical implants, and high-temperature applications.
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Q:Is it suitable for high-temperature environments?
A: Is it suitable for high-temperature environments?
Yes, up to 1000°C, but prolonged exposure may reduce performance.
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Q: What industries use Stellite8 Cobalt Alloy Bar?
A: Aerospace, power generation, chemical processing, medical, and automotive industries.
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Q: Can it be welded easily?
A: Requires TIG or plasma arc welding with cobalt-based fillers for best results.