Hydraulic Bronze, UNS C83800, Copper Casting Alloy

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Hydraulic Bronze, UNS C83800, Copper Casting Alloy
Categories:	Metal; Nonferrous Metal; Copper Alloy; Copper Casting Alloy
Material Notes:	Casting methods recommended for this alloy: Centrifugal, Continuous, and Sand. Applications: Low pressure valves and fittings, plumbing supplies and fittings, general hardware, air-gas-water fittings, pump components, railroad catenary fittings. Classified under: Red Brasses and leaded red brasses. ASTM B584; formerly ASTM B145-4B As cast values below are for sand casting. Alloy does not respond to heat treating
Key Words:	Leaded Red Brass, hydraulic bronze, 83-4-6-7, CA 838, ASTM B30 (CA838), ASTM B271, ASTM B505, ASTM B584, ASTM B145-4B, SAE J462, Ingot code no. 120, FED QQ-C-390
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Physical Properties	Metric	English	Comments

Density	8.60 g/cc	0.311 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	60	60
Tensile Strength, Ultimate	240 MPa	34800 psi
Tensile Strength, Yield	110 MPa @Strain 0.5 %	16000 psi @Strain 0.5 %
Elongation at Break	25 %	25 %	In 50 mm
Modulus of Elasticity	92.0 GPa	13300 ksi
Compressive Strength	79.0 MPa	11500 psi	at permanent set of 0.1%
	200 MPa	29000 psi	at permanent set of 10%
Machinability	90 %	90 %	UNS C36000 (free-cutting brass) = 100%
Izod Impact	11.0 J	8.11 ft-lb

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000011494 ohm-cm @Temperature 20.0 °C	0.000011494 ohm-cm @Temperature 68.0 °F
Magnetic Permeability	1.0	1.0

Thermal Properties	Metric	English	Comments
CTE, linear	18.0 µm/m-°C @Temperature 20.0 - 232 °C	10.0 µin/in-°F @Temperature 68.0 - 450 °F
Specific Heat Capacity	0.380 J/g-°C	0.0908 BTU/lb-°F
Thermal Conductivity	72.5 W/m-K @Temperature 20.0 °C	503 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	845 - 1005 °C	1550 - 1841 °F
Solidus	845 °C	1550 °F
Liquidus	1005 °C	1841 °F
Shrinkage	1.56 %	1.56 %	Patternmaker's Shrinkage (3/16 in./ft.)

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 0.0050 %	<= 0.0050 %
Antimony, Sb	<= 0.25 %	<= 0.25 %
Copper, Cu	82 - 83 %	82 - 83 %
Iron, Fe	<= 0.30 %	<= 0.30 %
Lead, Pb	5.0 - 7.0 %	5.0 - 7.0 %
Nickel, Ni	<= 1.0 %	<= 1.0 %
Phosphorus, P	<= 0.030 %	<= 0.030 %
Silicon, Si	<= 0.0050 %	<= 0.0050 %
Sulfur, S	<= 0.080 %	<= 0.080 %
Tin, Sn	3.3 - 4.2 %	3.3 - 4.2 %
Zinc, Zn	5.0 - 8.0 %	5.0 - 8.0 %

References for this datasheet.

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