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55 HRC - 60 HRC Cobalt Based Alloys Stellite 21 High Temperature Resistant
| MOQ: | 100KG |
| Price: | Price is negotiated based on the required specifications and quantity |
| Standard Packaging: | Standard export packaging, or packaging as required |
| Delivery Period: | 5-8 working days, depending on the parameters required for negotiation |
| Payment Method: | Payment Terms: Mainly T/T.. L/C, D/A, D/P, |
| Supply Capacity: | 5000 tons per month |
Detail Information
Place of Origin
China
Brand Name
Stellite12 Alloy
Certification
ISO Certificate
Model Number
Stellite21 Alloy
Name:
Cobalt Based Alloys
Hardness:
55-60 HRC (depending On Heat Treatment)
Tensile Strength:
Approximately 1,200 MPa
Density:
8.6 G/cm³
Wear Resistance:
Excellent In Abrasive And Sliding Wear Conditions
Corrosion Resistance:
High Resistance To Acids, Alkalis, And Seawate
Oxidation Resistance:
Retains Properties Up To 800°C
Ductility:
Low
High-Temperature Stability:
Maintains Hardness And Wear Resistance Up To 800°C
Applications:
Cutting Tools, Valve Seats, Aerospace, Oil & Gas, Industrial Machinery
Highlight:
55 HRC Cobalt Based Alloys
,Cobalt Based Alloys Stellite 21
,60 HRC Cobalt Base Alloys
Product Description
55 HRC - 60 HRC Cobalt Based Alloys Stellite 21 High Temperature Resistant
Product Specifications
| Attribute | Value |
|---|---|
| Name | Cobalt Based Alloys |
| Hardness | 55-60 HRC (depending on heat treatment) |
| Tensile Strength | Approximately 1,200 MPa |
| Density | 8.6 g/cm³ |
| Wear Resistance | Excellent in abrasive and sliding wear conditions |
| Corrosion Resistance | High resistance to acids, alkalis, and seawater |
| Oxidation Resistance | Retains properties up to 800°C |
| Ductility | Low |
| High-Temperature Stability | Maintains hardness and wear resistance up to 800°C |
| Applications | Cutting tools, valve seats, aerospace, oil & gas, industrial machinery |
Product Overview
Stellite 21 Alloy offers excellent wear, corrosion, and high-temperature resistance. This cobalt-based alloy is designed for high-performance applications requiring exceptional hardness and durability in severe service environments.
Chemical Composition
- Cobalt (Co): 50-60% - Base metal providing high-temperature strength and corrosion resistance
- Chromium (Cr): 28-32% - Enhances oxidation and corrosion resistance
- Tungsten (W): 5-10% - Increases hardness and wear resistance
- Carbon (C): 2.0-3.0% - Forms carbides that enhance hardness and strength
- Nickel (Ni): ≤3% - Improves toughness and resistance to corrosion
- Iron (Fe): ≤3% - Adjusts mechanical properties
- Silicon (Si): ≤1% - Aids in deoxidation during production
Mechanical Properties
- Hardness: 55-60 HRC - Provides high wear resistance
- Tensile Strength: Approximately 1,200 MPa - Ensures strength under mechanical stress
- Density: 8.6 g/cm³ - Offers robustness in demanding applications
- Ductility: Low - Suitable for applications requiring minimal deformation
- High-Temperature Performance: Retains hardness and wear resistance up to 800°C
Performance Characteristics
- Wear Resistance: Excellent resistance to both abrasive and adhesive wear
- Corrosion Resistance: High resistance to acids, alkalis, and seawater
- Oxidation Resistance: Maintains properties in high-temperature oxidizing environments up to 800°C
Industrial Applications
- Cutting Tools: For tools exposed to severe wear and high temperatures
- Valve Seats and Stems: For industrial valves handling corrosive and abrasive fluids
- Aerospace Components: Parts exposed to extreme temperatures and mechanical stresses
- Oil and Gas Industry: Downhole tools, valves, and equipment in harsh environments
- Industrial Machinery: Components requiring long-lasting wear resistance
Heat Treatment Options
- Solution Annealing: Relieves internal stresses and improves corrosion resistance
- Aging: Increases hardness and wear resistance by precipitating carbides
- Hardening: Achieves optimal hardness and wear resistance through controlled cooling
Product Summary
Stellite 21 Alloy is a high-performance, cobalt-based material known for its exceptional wear and corrosion resistance. Its robust chemical composition and mechanical properties make it suitable for critical applications in cutting tools, aerospace, oil and gas, and industrial machinery. The alloy's ability to maintain its properties at high temperatures ensures durability and reliability in demanding environments.
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