CW-PA Nickel-Chromium Alloy for Porcelain-Veneered Crowns and Bridges
Chengdu Keningda Materials Co., Ltd. · China
- السعر
- السعر عند الطلب
- موقع المورّد
- No. 68 Jingkai South 1st Road, Longquanyi District, Chengdu, Sichuan, China (production); Room 405, Sichuan University National Science Park, No. 99 Kehua North Road, Chengdu (registered)
وصف المنتج
Composition Nickel, chromium, molybdenum and silicon with minor noble-metal additions; beryllium-free, vacuum-melted and refined. Indications Type 0–3 porcelain-veneered and metal crowns and bridges. Key features 1. Beryllium- and cadmium-free: good corrosion and tarnish resistance, and no beryllium dust exposure for technicians. 2. Biocompatibility tested by a laboratory recognised by NMPA. 3. A proprietary formulation gives stable, reliable metal-ceramic bonding with a wide range of porcelains. 4. Moderate strength and hardness with good ductility — easy to grind, and long-span bridges resist deformation. 5. Vacuum melting and refining greatly reduce gas bubbles and porcelain cracking during firing.
المواصفات
| Registration No. | 川械注准 20192170094 |
|---|---|
| Model | KND/CW-PA |
| Composition | Ni, Cr, Mo, Si with minor noble metals (Be-, Cd-free) |
| Melting range | 1300–1350 °C |
| Thermal expansion | 13.8–14.0 ×10⁻⁶/°C |
| Metal-ceramic bond strength | ≥45 MPa |
| Tensile strength | ≥620 MPa |
| 0.2% proof strength | ≥420 MPa |
| Elongation | ≥25% |
| Young's modulus | 180–210 GPa |
| Density | 8.0–8.4 g/cm³ |
| Vickers hardness | 250–280 HV |
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