Alloy 275C / Alloy 275CT
Alloy 275C, Alloy 275CT UNS Number C82800
BrushCast® high strength casting alloy 275C provides peak strength and hardness greater than most steels, and offers thermal conductivity similar to that of aluminum, and up to five times that of steel. Beryllium Alloy 275C offers excellent electrical conductivity, wear and galling resistance, and the accuracy in replicating fine detail in cast components. Alloy 275CT is a fine grain equivalent to Alloy 275C. Material properties and manufacturing characteristics are similar to that of the standard casting alloy. Grain refinement is achieved through precise additions of either cobalt or titanium. Our fine grain casting alloys are preferred in applications where excellent surface finish characteristics are required in the cast product.
Markets and Applications for Alloy 275C and 275CT
Plastic Molds
Die Cast Plunger Tips
Non-sparking safety tools
Cast parts for military and defense applications
Undersea
Alloy 275C and 275CT Chemical Composition
Beryllium – 2.50 – 2.85%
Cobalt – 0.35 – 0.70%
Silicon – 0.20 – 0.35%
Copper - balance
Alloy 275C and 275CT Physical Properties
Elastic Modulus - 19 106 psi (130 Gpa)
Density - 0.294 lb/in3 (8.14 g/cm3)
Thermal Conductivity 70°F / 20°C - 52 BTU/ft•hr•°F (90 W/m•K)
Electrical Conductivity - 17-23% IACS (9.9-13.4 MS/m)
Coefficient of Thermal Expansion - 10 ppm/°F (18 ppm/°C)
Melting Range – 1570 - 1710 °F (850 - 930 °C)
Alloy 275C and 275CT Mechanical Properties
Mechanical properties may vary by product size, form and temper. Please see individual data sheets for values.
Available Forms, Sizes and Tolerances of Alloy 275C and 275CT
All BrushCast® alloys are available in ingots. See data sheet for sizes and tolerances.
Resources and Related links
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