Cobalt-chromium alloy

CLASSIFICATION：

KEY WORD：

　　Usage: Dental crowns, fixed bridges, denture frameworks

　　Tensile Strength: Rm(MPa)Min 510

　　Yield Strength: Rp0.2(MPa)Min 500

　　Area Reduction A (%): Min 3

　　Melting Point: 1450°C

　　Hardness: Hv 300

　　Linear Thermal Expansion Coefficient: 25-500 13.8X10-6 K-1

　　Density: 8.67g/cm ³

　　Physical Properties

　　1. Density: 8.4 g/cm³, Deviation ±0.5 g/cm³;

　　2. Hardness: ≥180 HV;

　　3. Tensile Strength: ≥260 MPa;

　　4. Yield Strength f0.2 Rp0.2: Average 280 MPa, Deviation ±10%;

　　5. Elongation at Break: 10%;

　　6. Liquidus Temperature: 1350℃, Deviation ±20℃.

Co	62%	Cr	29%
Mo	6%	Be and Cd	⩽0.02%

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