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Copper Alloy No. C63200

Aluminum Bronze , ASTM B150 CDA 632

Chemical Composition % by weight

Element Nominal Minimum Maximum
Copper 82 Rem. Rem.
Lead - - .02
Iron* 4 3 5
Aluminum 9 8.5 9.5
Manganese - - 3.5
Silicon - - .10
Nickel (incl. Co)* 5 4 5.5

*Iron content shall not exceed nickel content. 

Applications

Marine: Nuts, bolts, structural pump parts, shafting.

Industrial: Corrosion resistant articles.

Common Fabrication Processes

Hot forming, machining, welding.

Mechanical Properties

Typical for 1" Rod Light Anneal

Hardness* Rockwell B Scales 96
Tensile Strength** KSI 105
Yield Strength** (.05% EAU) KSI 53
Elongation** % in 2 inch 22

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

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 20
Specific Heat BTU/lb/F @ 68F .105
Thermal Expansion Per F from 68 F to 572 F .0000090
Density lb/cu in @ 68 F .276
Electrical Conductivity* (Annealed) % IACS @ 68 F 7
Modulus of Elasticity (Tension) KSI 17,000

*Volume basis

Fabrication Properties

Capacity for being cold worked Fair
Capacity for being hot formed Good
Machinability Rating (Free Cutting Brass=100) 30
Suitability for being joined by: Soldering/Fair
Brazing/Fair
Oxyacetylene Welding/Not Recommended
Gas Shielded Arc Welding/Excellent
Coated Metal Arc Welding/Good
Resistance Welding Spot/Good
Seam/Fair
Butt/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.