Melting Range | 1360°c-1390°C (2480°F-2534°F) | Casting Temp | 1427°C (2600°F) |
---|---|---|---|
Hardness | 340 HV | CTE | 14,0 *10-6 @25-600°C |
Yield Strength | 95,000 PSI | Tensile Strength | 140,000 PSI |
Elongation | 4% | Density | 8,70 g/cm3 |
Specific Gravity | 8,02 g/cm3 |
Ingredients | Cas # | % Composition by weight |
---|---|---|
Cobalt (Co) | (7440-48-4) | 61 - 63 % |
Chromium (Cr) | (7440-47-3) | 20 - 22 % |
Molybdenum (Mo) | (7439-98-7) | 5 - 6 % |
Tungsten | (7440-33-7) | 8 - 10% |
Silicon (Si) | (7440-21-3) | <1 % |
Aluminum (Al) | (7429-90-5) | 1.5% |
Niobium | (7440-03-1) | 1% |
Manganese (Mn) | (7439-96-5) | 1% |
Melting Range | 1360° – 1390° C (2480° - 2534° F) |
Yield Strength | 95,000 PSI |
Tensile Strength | 140,000 PSI |
Elongation | 4% |
Density | 8.7 (g/cm³) |
During casting and grinding avoid inhalation of fumes and dust. Exposure to large concentrations of dust may cause industrial dermatitis and respiratory tract irritation. Chronic exposure to Cobalt may cause pulmonary hypersensitivity.
Wear protective clothing. Melt, grind and polish in presence of adequate ventilation. Use respirator, goggles, gloves, coveralls, or protective clothing.
Although reasonable care has been taken in gathering information from the sources which we believe are reliable for preparation of this documents, we extend no warranties and make no representation as to the accuracy or completeness of the information contained, and assume no responsibility regarding suitability of this information for the user's intended purpose or for the consequences of its use.
A-Direct for single units. Sprueing should be ¼ (6mm) in length. Based on the size and the thickness of the crowns use 6-8 gauge sprues.
B-Indirect, for multiple units. Use straight 8 gauge sprue, about 1/8" (3 or 4mm) in length, and connect it to the unit. For long spanned bridges use an additional sprue connected to the last unit.
Use induction melting equipment or gas/oxygen torch. A-Torch casting: Use multiple orfice torch tips. Do not use crucible used for other alloys. Preheat the crucible. Move the torch allowing even distribution of heat. The individual ingots will not form a single mass. Release the casting arm as soon as the alloy starts to slump or sag. Bench cool the cast for about 5 minutes.
B-Induction Casting: Set the temperature to 2700 °F (1480 °C). Set the casting arm speed between 425 and 450 rpm.