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Stellite20 Cobalt Alloy Bar – China Factory for Cobalt Alloy Bar
Stellite20 Cobalt Alloy Bar, a high-performance cobalt-based alloy, offers exceptional wear resistance, corrosion resistance, and high-temperature stability. Ideal for demanding applications, this cobalt chromium alloy excels in industries like aerospace, oil and gas, and chemical processing.
Price: Contact Us for a Custom Quote
Contact our sales team for a quote on Stellite20 Cobalt Alloy Bar. Pricing varies based on specifications, quantity, and customization needs.
Specifications
- Diameter: 5 mm to 120 mm
- Length: Up to 4000 mm (customizable)
- Surface Treatment: Polished, ground, or as-cast
- Tolerance: ±0.03 mm (standard)
- Form: Round Bar, Round Rod
Key Features (Advantages)
- Outstanding wear resistance for prolonged durability
- Superior corrosion resistance in harsh environments
- High-temperature performance up to 1100°C
- Robust cobalt alloy properties for extreme conditions
- Flexible sizing for diverse industrial needs
Applications of Stellite20 Cobalt Alloy Bar
Stellite20 Cobalt Alloy Bar is utilized across industries requiring durable materials:
- Aerospace: Engine components, exhaust valves
- Oil & Gas: Valve seats, pump shafts
- Chemical Processing: Reactor components, fittings
- Marine: Propeller shafts, corrosion-resistant parts
- Tooling: Cutting tools, wear-resistant dies
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Cobalt (Co) | Balance (48-53%) |
| Chromium (Cr) | 31-34% |
| Tungsten (W) | 16-18% |
| Carbon (C) | 2.2-2.8% |
| Nickel (Ni) | ≤2% |
| Iron (Fe) | ≤1.5% |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 900 MPa |
| Yield Strength | 650 MPa |
| Elongation | ≤0.5% |
| Hardness (HRC) | 50-58 |
Chemical Properties
Stellite20 Cobalt Alloy Bar resists acids (e.g., nitric, sulfuric) and alkalis effectively. It meets environmental standards like RoHS, ensuring safe use in regulated sectors. Its cobalt base alloy structure ensures stability in corrosive settings.
Things to Note (Limitations)
- Not ideal for temperatures above 1100°C due to potential degradation
- Low ductility may lead to cracking under high impact
- Requires specialized tools for machining due to extreme hardness
- Limited performance in highly alkaline environments at high temperatures
Corrosion Data for Stellite20 Cobalt Alloy Bar
| Environment | Corrosion Resistance |
|---|---|
| Atmospheric (Air) | Excellent |
| Mild Chemical (Dilute Acids) | Very Good |
| Seawater | Good |
| High-Temperature Oxidation | Very Good |
Best Welding and Manufacturing Practices
Recommended welding methods for Stellite20 Cobalt Alloy Bar include TIG and plasma arc welding with cobalt-based fillers. Machining requires diamond or carbide tools due to high hardness. Hot forging is suitable, but cold working is limited.
What Customers Say About
Frequently Asked Questions
Q: How does Stellite20 differ from other cobalt-based alloys?
A: Stellite20 has higher tungsten content, increasing hardness but reducing flexibility compared to Stellite 6.
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Q: What are the main cobalt alloy uses?
A: Used in wear-resistant components, marine parts, and high-temperature applications.
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Q:Is it suitable for high-temperature environments?
A: Yes, up to 1100°C, but extended exposure may affect performance.
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Q: What industries use Stellite20 Cobalt Alloy Bar?
A: What industries use Stellite20 Cobalt Alloy Bar?
Aerospace, oil and gas, chemical processing, marine, and tooling industries.
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Q: What is the cobalt alloy price range?
A: Contact our sales team for a customized quote based on your needs.