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Stellite4 Cobalt Alloy Pipe – Premium Cobalt Alloy Steel from China
Stellite4 Cobalt Alloy Pipe, a premium chromium cobalt nickel alloy, is engineered for extreme durability and resistance to wear, corrosion, and high temperatures. Manufactured by our trusted China enterprise, this cobalt alloy steel is ideal for demanding industrial environments, offering superior performance in applications requiring robust material properties. Its unique cobalt alloy composition ensures longevity and reliability, making it a top choice for industries worldwide.
Price: Contact Us for a Custom Quote
For competitive pricing on Stellite4 Cobalt Alloy Pipe, contact our sales team through our website or customer service portal. Pricing terms are tailored to order volume, specifications, and delivery requirements. Reach out today to discuss your needs with our China-based manufacturing experts.
Specifications
- Outer Diameter: 6 mm to 250 mm
- Wall Thickness: 1 mm to 20 mm
- Length: Up to 6 meters (custom lengths available)
- Surface Treatment: Polished, annealed, or as per customer requirements
- Standards: ASTM, ASME, DIN, or customized specifications
- Finish: Seamless or welded options
Key Features (Advantages)
- Exceptional Wear Resistance: Outperforms standard alloys in abrasive environments.
- Superior Corrosion Resistance: Withstands harsh chemical and atmospheric conditions.
- High-Temperature Stability: Maintains integrity up to 1200°C, ideal for extreme heat applications.
- Customizable Specifications: Tailored dimensions and finishes from our China factory.
- Long Service Life: Reduces maintenance costs due to durable cobalt alloy properties.
Applications of Stellite4 Cobalt Alloy Pipe
The versatile Stellite4 Cobalt Alloy Pipe is widely used across industries due to its robust cobalt alloy uses. Key applications include:
- Petrochemical Industry: Piping for high-temperature, corrosive fluids.
- Aerospace: Components requiring high strength and heat resistance.
- Power Generation: Turbine and boiler systems exposed to extreme conditions.
- Chemical Processing: Handling aggressive chemicals with minimal degradation.
- Marine Engineering: Resistant to saltwater corrosion for offshore applications.
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Cobalt (Co) | Balance (approx. 50-55%) |
| Chromium (Cr) | 28-32% |
| Tungsten (W) | 12-15% |
| Nickel (Ni) | 0.5-2% |
| Carbon (C) | 0.9-1.4% |
| Iron (Fe) | ≤3% |
| Others | ≤1% (Si, Mn, etc.) |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 950-1100 MPa |
| Yield Strength | 650-800 MPa |
| Elongation | 10-15% |
| Hardness (HRC) | 38-44 |
| Density | 8.6 g/cm³ |
Chemical Properties
The cobalt alloy properties of Stellite4 ensure excellent resistance to acids (e.g., sulfuric and hydrochloric) and alkalis, making it suitable for harsh chemical environments. However, prolonged exposure to highly oxidizing acids like nitric acid may require careful monitoring. Stellite4 Cobalt Alloy Pipe complies with environmental regulations, but recycling is recommended due to cobalt’s limited availability.
Things to Note (Limitations)
- High-Temperature Oxidation: Above 1200°C, oxidation may occur, reducing lifespan.
- Brittleness: High carbon content may lead to cracking under extreme mechanical stress.
- Cost: Higher cobalt alloy price compared to standard stainless steel.
- Machining Challenges: Hardness requires specialized tools for cutting and forming.
Corrosion Data for Stellite4 Cobalt Alloy Pipe
| Environment | Corrosion Rate (mm/year) |
|---|---|
| Atmospheric (Urban) | <0.01 |
| Seawater | 0.01-0.05 |
| 10% Sulfuric Acid | 0.05-0.1 |
| 10% Hydrochloric Acid | 0.1-0.2 |
Best Welding and Manufacturing Practices
Stellite4 Cobalt Alloy Pipe supports multiple welding methods, including TIG (Tungsten Inert Gas) and plasma arc welding, to ensure strong joints. Preheating to 200-300°C is recommended to prevent cracking. Fabrication techniques include:
- Cutting: Use carbide or diamond tools due to high hardness.
- Forming: Hot forming at 1000-1100°C for optimal results.
- Machining: Requires high-speed tools with coolant to manage heat.
What Customers Say About
Frequently Asked Questions
Q: How does Stellite4 differ from other cobalt alloys?
A: Stellite4 has a higher tungsten content, enhancing wear resistance compared to alloys like Stellite 6, making it ideal for abrasive environments.
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Q: What industries benefit most from Stellite4 Cobalt Alloy Pipe?
A: Petrochemical, aerospace, power generation, and marine industries rely on its durability and corrosion resistance.
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Q: Can it be used in high-temperature environments?
A: Yes, it performs well up to 1200°C, but oxidation risks increase beyond this temperature.
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Q:Is Stellite4 environmentally compliant?
A: It meets environmental standards, but recycling is advised to reduce cobalt impact.
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Q: What welding methods are best for Stellite4?
A: TIG and plasma arc welding are recommended for strong, reliable joints.