Copper Alloy No. CDA 955



Composition - Percent

  Nominal Minimum Maximum
Aluminum 11 10.0 11.5
Copper 81 78.0 ...
Iron 4 3.0 5.0
Manganese ... ... 3.5
Nickel 4 3.0 5.5

Physical Properties

Melting Point
(Liquidus)
1930°F
Melting Point
(Solidus)
1900°F
Density .272 lb./cu. in. @ 68°F
Specific Gravity 7.53
Coefficient of
Thermal Expansion
.000009 per °F from 68°F to 572°F
Thermal Conductivity 24.2 BTU/sq. ft./ft./hr/°F @68°F
Electrical Conductivity 8.5 %IACS @ 68°F
Specific Heat .10 BTU/lb./°F @ 68°F
Modulus of Elasticity
(Tension)
16,000 ksi

Mechanical Properties

Min. Typ.
Tensile Strength - ksi (kg/mm²) 90.0 100
Yield Strength - ksi (kg/mm²)
(.5% Extension Under Load)
40.0 44
Yield Strength - ksi (kg/mm²)
(.2% Offset)
... ...
Elongation in 2 inches (50mm)
Percent
6 12