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Copper Alloy No. C54400

Phosphor Bronze B-2 , ASTM B 139 CDA 544 

Chemical Composition % by weight

Element Nominal Minimum Maximum
Copper 88 Rem. Rem.
Lead 4 3.5 4.5
Iron - - .10
Tin 4 3.5 4.5
Zinc 4 1.5 4.5
Phosphorus - .01 .50

Applications

Bearings, bushings, gears, pinions, shafts, thrust washers, valve parts. 

Common Fabrication Processes

Blanking, drawing, forming and bending, machining, shearing, stamping.

Mechanical Properties

Typical for 1" dia. Rod Hard (25%) Temper

Hardness* Rockwell B Scales 80
Tensile Strength** KSI 68
Yield Strength** (.5% EAU) KSI 57
Elongation** % in 2 inch 20

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

Physical Properties

Thermal Conductivity BTU/ (sq ft-ft-hr-F) 50
Specific Heat BTU/lb/F @ 68F .09
Thermal Expansion Per F from 68 F to 572 F .0000096
Density lb/cu in @ 68 F .321
Electrical Conductivity* (Annealed) % IACS @ 68 F 19
Modulus of Elasticity (Tension) KSI 15,000

*Volume basis

Fabrication Properties

Capacity for being cold worked Good
Capacity for being hot formed -
Suitability for being joined by: Soldering/Excellent
Brazing/Good
Oxyacetylene Welding/Not Recommended
Gas Shielded Arc Welding/Not Recommended
Coated Metal Arc Welding/Not Recommended
Resistance Welding Spot/Not Recommended
Seam/Not Recommended
Butt/Fair

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.