Essential details
MOQ:1
N.W:1 kg
Shipping:Express Delivery
Product Introduction
Item | Value |
Place of Origin | China |
Product name | Dental Removable Cobalt-Chromium Alloy |
Composition | Co: 51.0±2 Cr: 30.0±2 Mo: 7.0±1 Ni: 10.0±1 Si: 1.1±1 Mn: ≤1.0 C: ≤1.0 |
Solidus Temperature (℃) | 1345±50 |
Liquidus Temperature (℃) | 1370±50 |
Tensile Strength (MPa) | ≥700 |
Yield Strength (MPa) | ≥500 |
Elongation at Break (%) | ≥2.0 |
Young's Modulus (GPa) | 210±20 |
Density (g/cm³) | 8.2±0.4 |
Vickers Hardness (HV10) | 330-410 |
Shelf Life | 5 Years |
Tarnish Resistance: Only minor color changes after exposure to a specified tarnishing environment. Gentle brushing easily removes any corrosion from the alloy. | |
Corrosion Resistance: Total metal ion release in a specified solution at (37±1)℃ and (7.0±0.1)d should not exceed 200μg/cm². | |
Contraindications: Patients allergic to metals containing cobalt, chromium, nickel, and molybdenum. | |
Precautions: This product contains nickel. Wear a mask during grinding to prevent dust inhalation. | |
Usage: 1. Embedding: Create a wax model using a phosphoric high-temperature embedding material for dental casting on the duplicated model. Embed in a casting ring. Once the phosphate no-carbon high-temperature embedding material starts to solidify, bake it in an oven after one hour. After about an hour of solidification, heat for dewaxing (around 260℃), then heat the casting ring to about 1000℃ for half an hour before casting. 2. Casting: Use a high-frequency centrifugal casting machine. Melt the metal in the crucible until it collapses and has a uniform brightness before casting. Centrifugal machine specifications: a. When melting metal with gas and oxygen, gas pressure should be 0.2MPa and oxygen pressure 2MPa. b. When using acetylene and oxygen, the acetylene pressure should be 0.4MPa, and oxygen pressure should be 2MPa. Heat a proper amount of the alloy in the centrifugal casting machine's crucible until it's bright white. Cast immediately when the molten alloy forms a mirror-like dip. 3. Grinding and Electrolytic Polishing: After casting, let the casting ring naturally cool in the air for at least half an hour. Do NOT immerse in water. After cooling, sandblast and polish the casted item, followed by standard electrolytic polishing. | |
Storage and Transportation: This product doesn't require any special storage conditions or usage terms. Avoid exposure to rain, snow, or mechanical impacts during transportation. Do not mix or transport with corrosive materials. | |
Maintenance: No special maintenance or care is needed for this product. Do not open the package before use. |
Product details