Leaded Yellow Brass, UNS C85200, Copper Casting Alloy

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Leaded Yellow Brass, UNS C85200, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal and Continuous. Applications: Plumbing fittings and fixtures, ferrules, valves, hardware, ornamental brass, chandeliers, and irons. Classified under: Yellow brasses and leaded yellow brasses. ASTM B584; formerly ASTM B146-6A As cast values below are for sand casting. Alloy does not respond to heat treating
Key Words:	Leaded yellow brass, high copper yellow brass, 72-1-3-24, CA 852, ASTM B30, ASTM B271, ASTM B584; ASTM B146-6A, SAE J462, Ingot code no. 400, FED QQ-C-390 (CA852), MIL-C-15345 (Alloy 28)
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Physical Properties	Metric	English	Comments

Density	8.50 g/cc	0.307 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	45	45
Tensile Strength, Ultimate	260 MPa	37700 psi
Tensile Strength, Yield	90.0 MPa @Strain 0.5 %	13100 psi @Strain 0.5 %
Elongation at Break	35 %	35 %	In 50 mm
Modulus of Elasticity	76.0 GPa	11000 ksi
Machinability	80 %	80 %	UNS C36000 (free-cutting brass) = 100%

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000009269 ohm-cm @Temperature 20.0 °C	0.000009269 ohm-cm @Temperature 68.0 °F	18.6% IACS
Magnetic Permeability	1.0	1.0

Thermal Properties	Metric	English	Comments
CTE, linear	21.0 µm/m-°C @Temperature 20.0 - 100 °C	11.7 µin/in-°F @Temperature 68.0 - 212 °F
Specific Heat Capacity	0.380 J/g-°C	0.0908 BTU/lb-°F
Thermal Conductivity	83.9 W/m-K @Temperature 20.0 °C	582 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	925 - 940 °C	1700 - 1720 °F
Solidus	925 °C	1700 °F
Liquidus	940 °C	1720 °F
Shrinkage	1.6 %	1.6 %	Patternmaker's Shrinkage (3/16 in./ft.)

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 0.0050 %	<= 0.0050 %
Antimony, Sb	<= 0.20 %	<= 0.20 %
Copper, Cu	70 - 74 %	70 - 74 %
Iron, Fe	<= 0.60 %	<= 0.60 %
Lead, Pb	1.5 - 3.8 %	1.5 - 3.8 %
Nickel, Ni	<= 1.0 %	<= 1.0 %
Phosphorus, P	<= 0.020 %	<= 0.020 %
Silicon, Si	<= 0.050 %	<= 0.050 %
Sulfur, S	<= 0.050 %	<= 0.050 %
Tin, Sn	0.70 - 2.0 %	0.70 - 2.0 %
Zinc, Zn	20 - 27 %	20 - 27 %

References for this datasheet.

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MC85200b1 / 11907

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