Copper Alloy C95600 CDA 956 Silicone Bronze Casting Alloy
Copper Alloy No. C95600
Aluminum Bronze CDA 956
Chemical Composition % by weight
Element Nominal Minimum Maximum Copper 90.3 88 Rem. Lead - - - Iron - - - Nickel (incl Co) - - .25 Aluminum 7 6 8 Manganese - - - Magnesium - - - Silicon 2.5 1.8 3.2 Zinc - - - Tin - - -
Applications
Cable connectors, pole line hardware, terminals, gears, worm gears, marine hardware, valve stems.
M07 - As Continuous Cast
Hardness* Brinell Hardness (3000 kg load) 140 Tensile Strength** KSI 75 Yield Strength ** KSI (0.5% Ext. under load) 34 Elongation** % in 2 inch 18 **Test values are nominal approximations and depend on specimen size and orientation.
Physical Properties
Thermal Conductivity BTU/ (sq ft-ft-hr-F) 22.3 Specific Heat BTU/lb/ºF @ 68F .09 Thermal Expansion Per °F from 68 F to 572 F .000009 Density lb/cu in @ 68 F .278 Electrical Conductivity % IACS @ 68 F 8 Modulus of Elasticity KSI 15,000 *Volume basis
Fabrication Practices
Stress relieving temperature 600 F or 315 C Time at temperature 1 hour per inch of section thickness Responds to heat treatment Yes Solution heat treating temperature 1600-1675 F or 870-910 C Time at temperature 1 hour per inch of section thickness Quenching medium Water Annealing temperature 1150-1225 F or 620-660 C Time at temperature 1 hour per inch of section thickness Machinability rating (Free Cutting Brass=100) 60 Suitability for being joined by: Soldering/Good Brazing/Good Oxyacetylene Welding/Not Recommended Gas Shielded Arc Welding/Good Coated Metal Arc Welding/Fair