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Stellite 12 Cobalt Alloy Pipe – High Quality Cobalt Alloy Pipe from Top Manufacturers in China
Stellite 12 Cobalt Alloy Pipe, crafted by our trusted China manufacturer, is a high-performance chromium cobalt nickel alloy engineered for durability and resilience. Known for its excellent wear and corrosion resistance, this cobalt alloy steel excels in harsh environments, making it a preferred choice for aerospace, oil & gas, and industrial applications. Its robust cobalt alloy composition ensures long-lasting performance under demanding conditions.
Price: Contact Us for a Custom Quote
Contact our sales team for a tailored quote on Stellite 12 Cobalt Alloy Pipe. Pricing varies based on specifications, order size, and delivery terms. Reach out to our China-based factory to discuss cobalt alloy price options suited to your project requirements.
Specifications
- Outer Diameter:Â 10 mm to 300 mm
- Wall Thickness:Â 0.8 mm to 30 mm
- Length:Â Up to 12 meters (customizable)
- Surface Treatment:Â Polished, pickled, or annealed
- Standards:Â ASTM B622, ASME SB622
- Tolerance: ±0.15 mm for diameter, ±0.08 mm for thickness
Key Features (Advantages)
- Enhanced Wear Resistance:Â Ideal for abrasive conditions.
- Superior Corrosion Resistance:Â Resists harsh chemicals and acids.
- High-Temperature Performance: Stable up to 900°C.
- Versatile Cobalt Alloy Uses:Â Broad industrial applications.
- Precision Craftsmanship:Â Consistent quality from our China factory.
Applications of Stellite12 Cobalt Alloy Pipe
Stellite 12 Cobalt Alloy Pipe is valued for its cobalt alloy properties across various industries. Key applications include:
- Aerospace:Â Engine components, exhaust systems, and turbine blades.
- Oil & Gas:Â Piping for corrosive fluids and high-pressure systems.
- Chemical Processing:Â Pumps and valves in aggressive environments.
- Power Generation:Â Boiler tubes and heat exchangers.
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Cobalt (Co) | Balance (approx. 55-60%) |
| Chromium (Cr) | 28-32% |
| Tungsten (W) | 7-9% |
| Nickel (Ni) | 0-2.5% |
| Carbon (C) | 1.4-2.0% |
| Others (Fe, Si, Mn) | ≤3% |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 950-1150 MPa |
| Yield Strength | 650-850 MPa |
| Elongation | 8-15% |
| Hardness (HRC) | 40-48 |
Chemical Properties
The cobalt alloy properties of Stellite 12 Cobalt Alloy Pipe include excellent resistance to acids like sulfuric and hydrochloric, as well as alkalis, making it suitable for corrosive environments. However, it may require protective coatings in highly oxidizing conditions, such as concentrated nitric acid. This alloy complies with environmental standards, but recycling is recommended to minimize cobalt-related environmental impact.
Things to Note (Limitations)
While Stellite 12 Cobalt Alloy Pipe is highly versatile, consider these limitations:
- Elevated Temperatures: Slight strength reduction above 900°C.
- Brittleness Risk:Â Higher carbon content may cause cracking under extreme stress.
- Cost Factor:Â Cobalt alloy price is higher than standard alloys.
Corrosion Data for Stellite12 Cobalt Alloy Pipe
| Environment | Corrosion Rate (mm/year) |
|---|---|
| Atmospheric (Marine) | <0.01 |
| Mild Chemical (pH 4-10) | <0.04 |
| Sulfuric Acid (10%) | 0.15-0.35 |
| Hydrochloric Acid (5%) | 0.25-0.6 |
Best Welding and Manufacturing Practices
Stellite 12 Cobalt Alloy Pipe supports welding methods like TIG (Tungsten Inert Gas) and plasma arc welding, using Stellite-compatible fillers to preserve cobalt alloy properties. Fabrication techniques include:
- Cutting:Â Laser or abrasive waterjet for precision.
- Forming:Â Cold forming with care due to increased hardness.
- Machining:Â Carbide or diamond tools recommended.
What Customers Say About
Frequently Asked Questions
Q: How does Stellite 12 Cobalt Alloy Pipe compare to stainless steel?
A: Stellite 12 offers superior wear and corrosion resistance due to its cobalt alloy composition, ideal for extreme conditions unlike standard stainless steel.
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Q: What are the primary cobalt alloy uses for Stellite 12?
A: It’s used in aerospace, oil & gas, chemical processing, and power generation for components like pipes, valves, and turbines.
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Q: Can Stellite 12 Cobalt Alloy Pipe be welded?
A: Yes, TIG and plasma arc welding are recommended for optimal results.
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Q: Is Stellite 12 environmentally compliant?
A: It meets environmental standards, but recycling is advised to reduce cobalt impact.
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Q: What cobalt alloy properties make Stellite 12 stand out?
A: Its high wear resistance, corrosion resistance, and stability in harsh environments make it unique.