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3J21 Cobalt Alloy Tube – Engineered Excellence by a Premier China Manufacturer
The 3J21 Cobalt Alloy Tube, a high-performance cobalt-based alloy, is designed for superior strength, wear resistance, and elasticity in demanding environments. Its cobalt alloy composition makes it a preferred choice for industries requiring precision and durability, offering excellent performance in high-stress applications.
Price: Contact Us for a Custom Quote
For competitive pricing and tailored quotes on the 3J21 Cobalt Alloy Tube, please reach out to our sales team. We provide flexible pricing terms to suit your project specifications, ensuring value for both standard and custom orders.
Specifications
- Outer Diameter:Â 4 mm to 150 mm
- Wall Thickness:Â 0.3 mm to 15 mm
- Length:Â Up to 5 meters (customizable)
- Surface Treatment:Â Polished, pickled, or client-specified finishes
- Standards:Â GB/T 14992, ASTM, or customized specifications
Key Features (Advantages)
- High Elasticity:Â Maintains shape under cyclic stress.
- Exceptional Wear Resistance:Â Ideal for high-friction environments.
- Corrosion Resistance:Â Withstands harsh chemical exposures.
- Thermal Stability:Â Reliable performance at elevated temperatures.
- Precision Manufacturing:Â Custom dimensions for specific applications.
Applications of 3j21 Cobalt Alloy Tube
The 3J21 Cobalt Alloy Tube is valued for its cobalt alloy properties across multiple industries. Key applications include:
- Aerospace:Â Springs and fasteners in aircraft systems.
- Medical:Â Surgical instruments and implants leveraging cobalt chrome attributes.
- Automotive:Â High-performance engine components.
- Industrial:Â Precision springs in heavy machinery.
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Cobalt (Co) | 39.0 - 41.0 |
| Nickel (Ni) | 15.0 - 17.0 |
| Chromium (Cr) | 19.0 - 21.0 |
| Molybdenum (Mo) | 1.5 - 2.5 |
| Iron (Fe) | Balance |
| Carbon (C) | ≤ 0.12 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 1300 MPa |
| Yield Strength | ≥ 1000 MPa |
| Elongation | ≥ 8% |
| Hardness (HV) | 350 - 400 |
Chemical Properties
The 3J21 Cobalt Alloy Tube offers robust resistance to acids like nitric and phosphoric acid, as well as alkalis such as potassium hydroxide. It is not suited for environments with high concentrations of chloride ions, which may induce pitting corrosion.
Things to Note (Limitations)
While the 3J21 Cobalt Alloy Tube is highly versatile, certain limitations should be considered:
- High-Temperature Limits: Performance may degrade above 600°C without protective measures.
- Chloride Sensitivity:Â Avoid prolonged exposure to chloride-rich environments.
- Cost Factor:Â The cobalt alloy price is higher due to premium materials and processing.
Corrosion Data for 3j21 Cobalt Alloy Tube
| Environment | Corrosion Rate (mm/year) |
|---|---|
| Atmospheric (Industrial) | ≤ 0.015 |
| Seawater | 0.05 - 0.10 |
| Dilute Nitric Acid (10%) | 0.02 - 0.06 |
Best Welding and Manufacturing Practices
The 3J21 Cobalt Alloy Tube supports welding methods such as TIG and plasma arc welding. For best results:
- Use fillers compatible with chromium cobalt nickel alloy compositions.
- Preheat to 150°C to minimize thermal shock.
- Post-weld heat treatment to enhance elasticity and reduce residual stress.
Fabrication techniques like cold forming and precision machining are recommended to maintain the nickel cobalt alloy’s structural integrity.
What Customers Say About
Frequently Asked Questions
Q: How does the 3J21 Cobalt Alloy Tube differ from Stellite?
A: 1. How does the 3J21 Cobalt Alloy Tube differ from Stellite?
The 3J21 is optimized for elasticity and wear resistance in dynamic applications, while Stellite excels in hard-facing and wear-resistant coatings.
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Q: What are the primary cobalt alloy uses for this tube?
A: 2. What are the primary cobalt alloy uses for this tube?
It’s widely used in aerospace, medical, automotive, and industrial sectors for springs, implants, and high-stress components.
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Q: Is customization available for the 3J21 Cobalt Alloy Tube?
A: We offer tailored dimensions, wall thicknesses, and surface treatments to meet project needs.
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Q: How can I get a quote for the cobalt alloy price?
A: Contact our sales team for a personalized quote based on your requirements.
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Q: What welding techniques are best?
A: TIG and plasma arc welding with compatible fillers and post-weld heat treatment ensure optimal performance.