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UNS C46400
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Copper Alloy No. C46400

Naval Brass , CDA 464

ASTM B21 , ASTM B171

Chemical Composition % by weight

ElementNominalMinimumMaximum
Copper605962
Lead--.20
Iron--.10
Tin.8.51
Zinc39.2Remainder
Arsenic**-.02.06
Sb or P**-.02.10

* The uninhibited alloy is is copper alloy no. C46400.

** Arsenic, Antimony and Phosphorus inhibited alloys are identified respectively by copper alloy nos. C46500, C46600 and C46700.

Applications

Hardware: Aircraft turnbuckle barrels, balls, bolts.

Industrial: Condenser plates, welding rod.

Common Fabrication Processes

Blanking, drawing, forming and bending, heading and upsetting, hot forging and pressing, hot heading and upsetting, shearing.

Mechanical Properties

Typical for 1" Rod Half Hard (20%) Temper

Hardness*Rockwell B Scales82
Tensile Strength**KSI75
Yield Strength** (.5% EAU)KSI53
Elongation**% in 2 inch20

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

Physical Properties

Thermal ConductivityBTU/ (sq ft-ft-hr-F)67
Specific HeatBTU/lb/篎 @ 68F.09
Thermal ExpansionPer 癋 from 68 F to 572 F.0000118
Densitylb/cu in @ 68 F.304
Electrical Conductivity* (Annealed)% IACS @ 68 F26
Modulus of Elasticity (Tension)KSI15,000