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Copper Alloy No. C95400

Aluminum Bronze 9C ,  , CDA 954 , Grade C

ASTM B 505 , ASTM B 271

Chemical Composition % by weight


Element Nominal Minimum Maximum
Aluminum 11 10 11.5
Copper 85 83 -
Iron 4 3 5
Manganese - - .50
Nickel - - 2.5


Application for Castings

Bearings, gears, worm gears, bushings, wear plate, valve seats and guides, pickling hooks. 


Mechanical Properties (as cast)


M07 - As Continuous Cast

Hardness* Brinell Hardness (3000 kg load) 170
Tensile Strength** KSI 85 min
Yield Strength ** KSI (0.5% Ext. under load) 32 min
Elongation** % in 2 inch 10 min

**Test values are nominal approximations and depend on specimen size and orientation.

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 33.9
Specific Heat BTU/lb/F @ 68F .10
Thermal Expansion Per F from 68 F to 572 F .000009
Density lb/cu in @ 68 F .269
Electrical Conductivity* (Annealed) % IACS @ 68 F 13
Modulus of Elasticity KSI 15,500

*Volume basis

Fabrication Practices

Stress relieving temperature 600 F or 316 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
  Oxyacetylene Welding/Not Recommended
  Carbon Arc Welding/Fair
  Gas Shielded Arc Welding/Very Good
  Coated Metal Arc Welding/Good

The values listed above represent reasonable approximations suitable for general engineering use. Due to commercial variations in composition and to manufacturing limitations, they should not be used for specification purposes. See applicable A.S.T.M. specification references.

© 1998 Conex Metals.

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