KND/CW-CC Cobalt-Chromium Alloy for Porcelain-Fused Restorations
Chengdu Keningda Materials Co., Ltd. · China
- Prix
- Prix sur demande
- Localisation du fournisseur
- 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)
Description du produit
Composition Cobalt, chromium, molybdenum and tungsten with minor noble-metal additions; nickel- and beryllium-free, vacuum-melted and refined. Indications Type 2, 3 and 4 fixed porcelain-fused crowns and bridges, metal crowns and bridges, and porcelain-veneered removable frameworks. Key features 1. Patented formulation with trace rare-earth elements for strong metal-ceramic bonding — known in the trade as a "patented bio-alloy". 2. Nickel-, beryllium- and cadmium-free; excellent corrosion and tarnish resistance. 3. Biocompatibility tested by a laboratory recognised by NMPA. 4. The tungsten addition gives a thermal expansion coefficient suited to porcelain firing, compatible with a wide range of porcelains. 5. Good strength and hardness with sufficient ductility — easy to grind, and long-span bridges and clasps resist deformation.
Spécifications
| Registration No. | 川械注准 20192170093 |
|---|---|
| Model | KND/CW-CC |
| Composition | Co, Cr, Mo, W with minor noble metals (Ni-, Be-, Cd-free) |
| Melting range | 1310–1370 °C |
| Thermal expansion | 14.0–14.2 ×10⁻⁶/°C |
| Metal-ceramic bond strength | ≥40 MPa |
| Tensile strength | ≥820 MPa |
| 0.2% proof strength | ≥610 MPa |
| Elongation at break | ≥12.0% |
| Young's modulus | 200–230 GPa |
| Density | 8.3–8.8 g/cm³ |
| Vickers hardness | 360–410 HV |
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