Leaded Yellow Brass, UNS C85400, Copper Casting Alloy

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Leaded Yellow Brass, UNS C85400, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, Permanent Mold, Plaster, and Sand. Applications: General purpose yellow casting alloy not subject to high internal pressure. Furniture hardware, ornamental castings, radiator fittings, ship trimmings, cocks, battery clamps, valves and fittings. Classified under: Yellow brasses and leaded yellow brasses. ASTM B584; formerly ASTM B146-6B As cast values below are for sand casting. Alloy does not respond to heat treating. Casting shrinkage allowance is 1.5 - 1.8%
Key Words:	Leaded yellow brass, No. 1 yellow brass, 67-1-3-29, CA 854, ASTM B30 (CA854), ASTM B271, ASTM B584; ASTM B146-6B, SAE J462, Ingot code no. 400, FED QQ-C-390, MIL-C-15345 (Alloy 23)
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Physical Properties	Original Value	Comments

Density	8.45 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	50
Tensile Strength, Ultimate	235 MPa
Tensile Strength, Yield	83.0 MPa @Strain 0.5 %
Elongation at Break	35 %	In 50 mm
Tensile Modulus	12000 ksi
Machinability	80 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000008796 ohm-cm @Temperature 20.0 °C	19.6% IACS
Magnetic Permeability	1.0

Thermal Properties	Original Value	Comments
CTE, linear	20.2 µm/m-°C @Temperature 20.0 - 100 °C
Specific Heat Capacity	0.380 J/g-°C
Thermal Conductivity	88.0 W/m-K @Temperature 20.0 °C
Melting Point	925 - 940 °C
Solidus	925 °C
Liquidus	940 °C
Shrinkage	1.6 %	Patternmaker's Shrinkage (3/16 in./ft.)

Component Elements Properties	Original Value	Comments
Aluminum, Al	<= 0.35 %
Copper, Cu	65 - 70 %
Iron, Fe	<= 0.70 %
Lead, Pb	1.5 - 3.5 %
Nickel, Ni	<= 1.0 %
Silicon, Si	<= 0.050 %
Tin, Sn	0.50 - 1.5 %
Zinc, Zn	24 - 32 %

References for this datasheet.

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MC85400b1 / 11908

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