Nickel Silver Copper Alloy, UNS C78270, OS015 Temper, Flat Products

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Nickel Silver Copper Alloy, UNS C78270, OS015 Temper, Flat Products
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	Temper: Nominal Grain Size 0.015 mm Fabrication Properties: Excellent Suitability – Soldering; Good Suitability – Brazing, Capacity for Being Cold Worked; Fair Suitability – Butt Weld; Poor Suitability – Capacity for Being Hot Formed Typical uses: Watch Parts, Watch Plates; Key Blanks
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Physical Properties	Original Value	Comments

Density	0.310 lb/in³

Mechanical Properties	Original Value	Comments
Hardness, Rockwell F	85 @Thickness 1.02 mm
Tensile Strength	59.0 ksi @Thickness 1.02 mm
Tensile Strength, Yield	27.0 ksi @Thickness 1.02 mm	0.5% Ext
Elongation at Break	32 % @Thickness 1.02 mm
Tensile Modulus	17000 ksi
Modulus of Rigidity	6400 ksi
Poissons Ratio	0.33	Calculated
Machinability	60 %
Shear Strength	43.0 ksi @Thickness 1.02 mm

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000172 ohm-cm	10% IACS

Thermal Properties	Original Value	Comments
CTE, linear	10.3 µin/in-°F @Temperature 20.0 - 100 °C
Thermal Conductivity	28.0 BTU-in/hr-ft²-°F
Melting Point	1780 - 1830 °F
Solidus	1780 °F
Liquidus	1830 °F

Component Elements Properties	Original Value	Comments
Copper, Cu	65 - 68 %
Iron, Fe	<= 0.35 %
Lead, Pb	1.0 - 1.8 %
Manganese, Mn	<= 0.50 %
Nickel, Ni	4.5 - 6.0 %
Zinc, Zn	23.7 - 29.5 %	As Balance

References for this datasheet.

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MC78270x6 / 292515

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