High Standard Stainless Steel With Strict Inspection
Stellite 12/20
Complete Technical Data Sheet for Stellite 12/20 Chemical Composition Mechanical Properties Physical Properties International Standards & Grade Equivalents Key Applications of Stellite 12/20 Aerospace & Defense Stellite 12/20 alloys are used in aerospace and defense for turbine engine parts, exhaust valves, high-temp fasteners, and rocket motor components requiring reliability under extreme conditions. Oil & Gas […]
Description
Grade Stellite 12/20 alloy Specifications
Cobalt Alloy Plates
Our cobalt alloy plates deliver unmatched durability and superior resistance to wear, heat, and corrosion. Engineered to perform in the most extreme environments, they provide reliable strength for demanding industrial applications, ensuring longevity and peak operational performance where it matters most.
Cobalt Alloy Bars/Rods
Engineered for exceptional strength and wear resistance, our cobalt alloy bars and rods offer versatile solutions for high-performance needs. From aerospace to industrial manufacturing, these components provide superior durability and reliability under extreme conditions, ensuring precision and longevity.
Complete Technical Data Sheet for Stellite 12/20
| Element | Stellite 12 (wt%) | Stellite 20 (wt%) |
|---|---|---|
| Cobalt (Co) | Balance | Balance |
| Chromium (Cr) | 29.0 – 32.0 | 32.0 – 35.0 |
| Tungsten (W) | 7.5 – 9.5 | 16.0 – 18.0 |
| Carbon (C) | 1.2 – 1.7 | 2.3 – 2.7 |
| Nickel (Ni) | 3.0 max | 3.0 max |
| Iron (Fe) | 3.0 max | 3.0 max |
| Silicon (Si) | 2.0 max | 1.5 max |
| Manganese (Mn) | 1.0 max | 1.0 max |
| Molybdenum (Mo) | 1.5 max | 1.0 max |
| Property | Stellite 12 | Stellite 20 | Test Method |
|---|---|---|---|
| Hardness (as-cast) | 45-52 HRC | 53-58 HRC | ASTM E18 |
| Tensile Strength | 760-860 MPa | 620-760 MPa | ASTM E8 |
| Yield Strength | 520-620 MPa | 450-550 MPa | ASTM E8 |
| Elongation | 1-3% | <1% | ASTM E8 |
| Density | 8.47 g/cm³ | 8.70 g/cm³ | ASTM B311 |
| Property | Stellite 12 | Stellite 20 | Units |
|---|---|---|---|
| Melting Point | 1,330-1,410 | 1,295-1,375 | °C |
| Thermal Conductivity (20°C) | 14.2 | 12.8 | W/m·K |
| Coefficient of Thermal Expansion (20-1000°C) | 14.3 | 13.9 | 10⁻⁶/K |
| Electrical Resistivity (20°C) | 0.89 | 0.95 | μΩ·m |
| Magnetic Properties | Non-magnetic | Non-magnetic | – |
| Standard | Stellite 12 Designation | Stellite 20 Designation |
|---|---|---|
| UNS | R30012 | R30020 |
| AMS | AMS 5894 | AMS 5385 |
| ASTM | F75 (similar) | F90 (similar) |
| ISO | – | ISO 5832-4 (similar) |
| AWS | ERCoCr-C | ERCoCr-E |
Why Choose Our Stellite 12/20 Alloys?
ISO 9001 Certified Manufacturing
Every batch of Stellite 12/20 is produced under strict ISO 9001-certified procedures, ensuring unparalleled consistency in chemical composition, uniformity in microstructure, and traceable quality from raw material through finished product. Our meticulous quality assurance means you can trust your materials to exceed industry standards for strength, longevity, and safety.
Custom Material Solutions
We offer fully customized material development to meet your project’s unique challenges. Our engineering team collaborates with you to tailor chemical compositions, mechanical properties, and forging processes, resulting in alloys that precisely match your application’s requirements—from extreme temperature stability to optimized hardness and corrosion resistance.
Comprehensive Testing & Certification
Our Stellite 12/20 alloys undergo a comprehensive suite of evaluations, including spectral analysis, impact and tensile strength testing, hardness measurement, and destructive as well as non-destructive examination. All supplied materials are accompanied by complete certification packages that verify compliance with the latest international standards and industry-specific regulations.
Industry-Leading Wear and Corrosion Resistance
Utilizing advanced metallurgical processes, our alloys exhibit exceptional wear resistance and outstanding protection against oxidation, thermal fatigue, and corrosive attack—even in challenging environments involving abrasive particles or aggressive chemicals. This translates to enhanced component service life, reduced downtime, and lower maintenance costs for your operation.
Key Applications of Stellite 12/20
Aerospace & Defense
Stellite 12/20 alloys are used in aerospace and defense for turbine engine parts, exhaust valves, high-temp fasteners, and rocket motor components requiring reliability under extreme conditions.
Oil & Gas
Stellite 12/20 alloys ensure reliable performance in oil and gas operations by resisting wear, corrosion, and extreme pressure, extending equipment life and reducing maintenance needs.
Power Generation
Used for turbine and compressor discs, shafts, fasteners, and combustion chamber parts that demand unwavering strength and stability at high speeds and extreme temperatures.
What Our Clients Say
Stellite 12/20 has significantly improved our machining processes. The wear resistance is impressive, and we’ve seen a notable reduction in tool failures. Highly recommended for any serious manufacturer!
Michael Brown
Manufacturing Engineer
We switched to Stellite 12/20 for our cutting tools, and the difference is remarkable. The performance in harsh environments is outstanding. This material is now our go-to for durability and precision.
Lisa Johnson
Quality Control Manager
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Frequently Asked Questions
What’s the difference between Stellite 12 and Stellite 20?
Stellite 20 contains higher carbon and tungsten content than Stellite 12, resulting in superior hardness and wear resistance. Stellite 12 offers better machinability and impact resistance. Our engineers can help determine which alloy best suits your application based on operating temperature, wear conditions, and mechanical stress requirements.
Can you provide material certifications?
Yes. Every shipment includes comprehensive material test reports (MTR) with complete chemical composition analysis, mechanical property testing results, heat treatment records, and compliance certifications for relevant international standards.
What forms are available for Stellite 12/20?
We supply Stellite 12 and Stellite 20 in multiple product forms including round bars, flat bars, plates, sheets, wire, welding rods, and custom forgings. Custom dimensions and specifications are available to meet your exact requirements.
What is the typical lead time for orders?
Lead times vary based on product form, quantity, and specifications. Standard materials from our inventory typically ship within 7-14 days. Custom manufacturing orders require 4-8 weeks depending on complexity. Contact us for specific timeline estimates for your project.
Do you offer technical support for material selection?
Absolutely. Our metallurgical engineers provide expert consultation on material selection, application engineering, welding procedures, and performance optimization. We analyze your operating conditions, performance requirements, and budget to recommend the optimal high-temp Stellite solution.
How do Stellite alloys compare to nickel-based superalloys?
Stellite cobalt-based alloys generally offer superior wear and corrosion resistance compared to nickel superalloys, particularly in sulfidizing and oxidizing environments. However, nickel alloys may provide better high-temperature strength in some applications. Our team can provide detailed comparative analysis for your specific requirements.
Shipping and Delivery
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