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Copper Alloy No. C83600

Leaded Red Brass Alloy , CDA 836 , SAE 40

Chemical Composition % by weight

Element Nominal Minimum Maximum
Aluminum - - .005
Antimony - - .25
Copper 85 84 86
Iron - - .30
Lead 5 4 6
Nickel - - 1
Phosphorus - - .05
Silicon - - .005
Sulfur - - .08
Tin 5 4 6
Zinc 5 4 6

Applications

Pump components, small gears, water impellers and housings, marine fittings, flanges, low pressure valves and fittings, pipe fittings, plumbing fixtures, ornamental fixtures

Mechanical Properties

M07 - As Continuous Cast

Hardness* Brinell Hardness (500 kg load) 60
Tensile Strength** KSI 36
Yield Strength ** KSI (0.5% Ext. under load) 19
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) 41.6
Specific Heat BTU/lb/F @ 68F .09
Thermal Expansion Per F from 68 F to 400 F .000010
Density lb/cu in @ 68 F .318
Electrical Conductivity % IACS @ 68 F 15
Modulus of Elasticity KSI 13,500

Fabrication Practices

Stress relieving temperature 500 F or 260 C
Time at temperature 1 hour per inch of section thickness
Responds to heat treatment No
Machinability rating (Free Cutting Brass=100) 84
Suitability for being joined by: Soldering/Excellent
Brazing/Good*
Oxyacetylene Welding/Not Recommended
Gas Shielded Arc Welding/Not Recommended
Coated Metal Arc Welding/Fair

*Since brazing is performed at temperatures within the hot-short range, strain must be avoided during the brazing and cooling of this alloy.

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.