Product Specification: LION® R30020 (Stellite 20 Type) Cobalt-Based Alloy
LION® R30020 is a premium cobalt-chromium-tungsten alloy designed for applications requiring maximum resistance to severe abrasion, erosion, and chemical corrosion. Known in the industry as Stellite 20, this grade features a high volume fraction of hard carbides (over 30%), making it one of the most wear-resistant alloys in the Stellite family.
1. Ưu điểm chính về hiệu suất
- Superior Abrasion Resistance: High carbon and tungsten content create a microstructure optimized for resisting sliding wear and particle erosion.
- Excellent Red Hardness: Maintains its high hardness (approx. 52 HRC) even at elevated service temperatures.
- Chemical Stability: Highly resistant to aggressive chemical media, especially in environments where mechanical wear and corrosion occur simultaneously.
- Precision Performance: Ideal for components requiring a high-quality surface finish and tight dimensional tolerances under friction.
2. Thông số kỹ thuật (Thành phần danh nghĩa)
| Yếu tố | Biểu tượng | % trọng lượng (Điển hình) |
|---|---|---|
| coban | có | Sự cân bằng |
| Crom | Cr | 32.0 – 34.0% |
| Tungsten | W | 17.0 – 18.5% |
| Cacbon | C | 2.4 – 2.6% |
| Niken | TRONG | ≤ 2.5% |
| Sắt | Fe | 3,0% |
3. Physical & Mechanical Properties
- độ cứng: 48 – 55 HRC (Typical 52 HRC)
- Tỉ trọng: 8.70 g/cm³
- Phạm vi nóng chảy: 1230°C – 1300°C (2245°F – 2370°F)
- Impact Strength: Low (Brittle due to high carbide content)
4. Primary Applications
- Industrial Wear Parts: Bearing sleeves, rotary seal rings, and centerless grinding work rests.
- Fluid Handling: Slurry pump components, homogenizer valve seats, and needle valves.
- Precision Tooling: Surgical needle holders and specialized cutting edges.
5. Fabrication Guidance
- Hàn: Can be applied via PTA (Hồ quang chuyển plasma) or Laser Cladding. High preheat (approx. 500°C) is necessary to prevent cracking.
- Gia công: Extremely difficult to machine. Best finished by grinding with silicon carbide or diamond wheels.
Tham khảo chéo ngành: UNS R30020 | Stellite 20 Type.
Produced under LION® high-performance metallurgical standards.l impact or extreme tensile stress.