ALLOYS
Alloys for manufacturing metal-ceramic prostheses require a specific melting process. Therefore, we use Vacuum Induction Melting (VIM) technology for production. The Vacuum Induction Melting method allows processing of materials that react with oxygen, nitrogen, or other atmospheric gases. The vacuum environment enables removal of gas impurities, while electromagnetic stirring promotes uniform composition.
Thanks to this technology, our metals are free from gases and oxides, as it eliminates contact between the molten metal and the surrounding oxygen-containing environment. This means the final alloy is maximally neutral and safe for use. Finished prostheses do not react with the patient’s oral cavity, and the risk of allergic reactions or other negative effects is minimized.
Thanks to this technology, our metals are free from gases and oxides, as it eliminates contact between the molten metal and the surrounding oxygen-containing environment. This means the final alloy is maximally neutral and safe for use. Finished prostheses do not react with the patient’s oral cavity, and the risk of allergic reactions or other negative effects is minimized.
CHEMICAL COMPOSITION OF ALLOYS
COBALT-CHROMIUM ALLOY (BERYLLIUM-FREE)
Composition:
Cobalt (Co) – 60%
Chromium (Cr) – 28%
Tungsten (W) – 9%
Molybdenum (Mo) –
None Other – Si-1.5%, Mn, Fe
Cobalt (Co) – 60%
Chromium (Cr) – 28%
Tungsten (W) – 9%
Molybdenum (Mo) –
None Other – Si-1.5%, Mn, Fe
Physical and Mechanical Properties:
Solidus-Liquidus Temperature: 1308°C - 1386°C
Coefficient of Thermal Expansion:
(25°C - 500°C): 14.2 x 10⁻⁶ K⁻¹
(25°C - 600°C): 14.4 x 10⁻⁶ K⁻¹
Density: 8.5 g/cm³
Vickers Hardness: 273 HV10
Elongation at Break: 16%
Proof Strength (Rp₀.₂ / Yield Strength): 361
MPa Modulus of Elasticity: 183 GPa
Color: White
Solidus-Liquidus Temperature: 1308°C - 1386°C
Coefficient of Thermal Expansion:
(25°C - 500°C): 14.2 x 10⁻⁶ K⁻¹
(25°C - 600°C): 14.4 x 10⁻⁶ K⁻¹
Density: 8.5 g/cm³
Vickers Hardness: 273 HV10
Elongation at Break: 16%
Proof Strength (Rp₀.₂ / Yield Strength): 361
MPa Modulus of Elasticity: 183 GPa
Color: White
OPTIFARMA LIMITED LIABILITY COMPANY
125212, Moscow, Kronstadtsky Blvd, 6, Building 2, Premises 118/11
Phone: +7 (915) 015-51-69
e-mail: msamogina@optifarma.ru
Phone: +7 (915) 015-51-69
e-mail: msamogina@optifarma.ru
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