Alcoloy Copper, UNS C68800, H08 Temper strip

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Alcoloy Copper, UNS C68800, H08 Temper strip
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	Good to excellent corrosion resistance. Excellent hot and cold formability. Fabricated by blanking, drawing, forming and bending, shearing and stamping. Applications: springs, switches, contacts, relays, drawn parts. Test specimen: strip - 1mm thickness.
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Physical Properties	Metric	English	Comments

Density	8.20 g/cc	0.296 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	99	99
Hardness, Rockwell 30T	83.5	83.5
Tensile Strength, Ultimate	885 MPa	128000 psi
Tensile Strength, Yield	785 MPa @Strain 0.2 %	114000 psi @Strain 0.2 %
Elongation at Break	2.0 %	2.0 %	In 50 mm
Modulus of Elasticity	116 GPa	16800 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000104 ohm-cm @Temperature 20.0 °C	0.0000104 ohm-cm @Temperature 68.0 °F
Magnetic Permeability	1.003	1.003

Thermal Properties	Metric	English	Comments
CTE, linear	18.0 µm/m-°C @Temperature 20.0 - 300 °C	10.0 µin/in-°F @Temperature 68.0 - 572 °F
Specific Heat Capacity	0.375 J/g-°C	0.0896 BTU/lb-°F
Thermal Conductivity	69.0 W/m-K	479 BTU-in/hr-ft²-°F
Melting Point	950 - 965 °C	1740 - 1770 °F
Solidus	950 °C	1740 °F
Liquidus	965 °C	1770 °F
Annealing Point	399 - 593 °C	750 - 1100 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	3.0 - 3.8 %	3.0 - 3.8 %
Cobalt, Co	0.25 - 0.55 %	0.25 - 0.55 %
Copper, Cu	72.3 - 74.7 %	72.3 - 74.7 %
Iron, Fe	<= 0.050 %	<= 0.050 %
Lead, Pb	<= 0.050 %	<= 0.050 %
Other, total	<= 0.010 %	<= 0.010 %
Zinc, Zn	22.7 %	22.7 %

References for this datasheet.

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MC68800b8 / 11690

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