Muntz metal, UNS C28000, M20 Temper flat products

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Muntz metal, UNS C28000, M20 Temper flat products
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	Fair to excellent corrosion resistance. Excellent hot formability and forgeability for blanking, forming and bending, hot forging and pressing, hot heading and upsetting, shearing. Applications: architectural, large nuts and bolts, brazing rod, condenser plates, heat exchanger and condenser tubing, hot forgings. Test specimen: flat products - 1mm thickness.
Key Words:	CDA 280, CZ109, ISO CuZn40, CEN CW509L, yellow metal, 60/40 brass
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Physical Properties	Metric	English	Comments

Density	8.39 g/cc	0.303 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell F	85	85
Tensile Strength, Ultimate	370 MPa	53700 psi
Tensile Strength, Yield	145 MPa	21000 psi
Elongation at Break	45 %	45 %	In 50 mm
Modulus of Elasticity	105 GPa	15200 ksi
Poissons Ratio	0.346	0.346
Machinability	40 %	40 %	UNS C36000 (free-cutting brass) = 100%
Forgeability	90 %	90 %
Shear Modulus	39.0 GPa	5660 ksi
Shear Strength	275 MPa	39900 psi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000616 ohm-cm	0.00000616 ohm-cm

Thermal Properties	Metric	English	Comments
CTE, linear	20.8 µm/m-°C @Temperature 20.0 - 300 °C	11.6 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.375 J/g-°C	0.0896 BTU/lb-°F
Thermal Conductivity	123 W/m-K @Temperature 20.0 °C	854 BTU-in/hr-ft²-°F @Temperature 68.0 °F
Melting Point	900 - 905 °C	1650 - 1660 °F
Solidus	900 °C	1650 °F
Liquidus	905 °C	1660 °F
Annealing Point	427 - 593 °C	800 - 1100 °F

Processing Properties	Metric	English	Comments
Annealing Temperature	425 - 600 °C	797 - 1110 °F
Hot-Working Temperature	625 - 800 °C	1160 - 1470 °F

Component Elements Properties	Metric	English	Comments
Copper, Cu	59 - 63 %	59 - 63 %
Iron, Fe	<= 0.070 %	<= 0.070 %
Lead, Pb	<= 0.30 %	<= 0.30 %
Zinc, Zn	40 %	40 %

References for this datasheet.

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MC28000b2 / 11151

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