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Copper Alloy No. C63000

Nickel Aluminum Bronze

ASTM B 150 CDA 630 , ASTM B171

Chemical Composition % by weight

Element Nominal Minimum Maximum
Copper 82 Rem. Rem.
Iron 3 2 4
Tin - - .20
Zinc - - .30
Aluminum 10 9 11
Manganese - - 1.5
Silicon - - .25
Nickel (incl. Co) 5 4 5.5

Applications

Nuts, bolts, valve seats, plunger tips, marine shafts, valve guides, aircraft parts, pump shafts, structural members.

Common Fabrication Processes

Hot forming, forging, machining.

Mechanical Properties

Typical for 1" Rod Half Hard (10%) Temper

Hardness* Rockwell B Scales 98
Tensile Strength** KSI 118
Yield Strength** (.5% EAU) KSI 75
Elongation** % in 2 inch 15

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

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 22.6
Specific Heat BTU/lb/F @ 68F .09
Thermal Expansion Per F from 68 F to 572 F .0000090
Density lb/cu in @ 68 F .274
Electrical Conductivity* (Annealed) % IACS @ 68 F 7
Modulus of Elasticity (Tension) KSI 17,500

*Volume basis

Fabrication Properties

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