Leaded nickel silver 65-8-2, UNS C78200, WR02 Temper, Sheet

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Leaded nickel silver 65-8-2, UNS C78200, WR02 Temper, Sheet
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	Temper: Welded, Drawn, and Stress Relieved from Half Hard, Tube 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: Key Blanks; Watch Parts
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Physical Properties	Metric	English	Comments

Density	8.69 g/cc	0.314 lb/in³

Mechanical Properties	Metric	English	Comments
Tensile Strength	20.7 MPa @Thickness 1.02 mm	3000 psi @Thickness 0.0400 in
	27.6 MPa @Thickness 1.02 mm	4000 psi @Thickness 0.0400 in
	34.5 MPa @Thickness 1.02 mm	5000 psi @Thickness 0.0400 in
	82.7 MPa @Thickness 1.02 mm	12000 psi @Thickness 0.0400 in
	165 MPa @Thickness 1.02 mm	24000 psi @Thickness 0.0400 in
	221 MPa @Thickness 1.02 mm	32000 psi @Thickness 0.0400 in
	276 MPa @Thickness 1.02 mm	40000 psi @Thickness 0.0400 in
Tensile Strength, Ultimate	276 MPa @Thickness 1.02 mm	40000 psi @Thickness 0.0400 in
	296 MPa @Thickness 1.02 mm	43000 psi @Thickness 0.0400 in
	303 MPa @Thickness 1.02 mm	44000 psi @Thickness 0.0400 in
	324 MPa @Thickness 1.02 mm	47000 psi @Thickness 0.0400 in
	352 MPa @Thickness 1.02 mm	51000 psi @Thickness 0.0400 in
	372 MPa @Thickness 1.02 mm	54000 psi @Thickness 0.0400 in
	400 MPa @Thickness 1.02 mm	58000 psi @Thickness 0.0400 in
Tensile Strength, Yield	159 MPa @Thickness 1.02 mm	23000 psi @Thickness 0.0400 in	0.5% Ext
	186 MPa @Thickness 1.02 mm	27000 psi @Thickness 0.0400 in	0.5% Ext
	290 MPa @Thickness 1.02 mm	42000 psi @Thickness 0.0400 in	0.5% Ext
	400 MPa @Thickness 1.02 mm	58000 psi @Thickness 0.0400 in	0.5% Ext
	434 MPa @Thickness 1.02 mm	63000 psi @Thickness 0.0400 in	0.5% Ext
	503 MPa @Thickness 1.02 mm	73000 psi @Thickness 0.0400 in	0.5% Ext
	524 MPa @Thickness 1.02 mm	76000 psi @Thickness 0.0400 in	0.5% Ext
Elongation at Break	3.0 % @Thickness 1.02 mm	3.0 % @Thickness 0.0400 in
	4.0 % @Thickness 1.02 mm	4.0 % @Thickness 0.0400 in
	5.0 % @Thickness 1.02 mm	5.0 % @Thickness 0.0400 in
	12 % @Thickness 1.02 mm	12 % @Thickness 0.0400 in
	24 % @Thickness 1.02 mm	24 % @Thickness 0.0400 in
	32 % @Thickness 1.02 mm	32 % @Thickness 0.0400 in
	40 % @Thickness 1.02 mm	40 % @Thickness 0.0400 in
Tensile Modulus	117 GPa	17000 ksi
Modulus of Rigidity	44.1 GPa	6400 ksi
Poissons Ratio	0.33	0.33	Calculated
Machinability	60 %	60 %

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000158 ohm-cm	0.0000158 ohm-cm	10.9% IACS

Thermal Properties	Metric	English	Comments
CTE, linear	18.5 µm/m-°C @Temperature 20.0 - 100 °C	10.3 µin/in-°F @Temperature 68.0 - 212 °F
Specific Heat Capacity	0.377 J/g-°C	0.0900 BTU/lb-°F
Thermal Conductivity	4.03 W/m-K	28.0 BTU-in/hr-ft²-°F
Melting Point	971 - 999 °C	1780 - 1830 °F
Solidus	971 °C	1780 °F
Liquidus	999 °C	1830 °F
Annealing Point	499 - 621 °C	930 - 1150 °F

Component Elements Properties	Metric	English	Comments
Copper, Cu	63 - 67 %	63 - 67 %
Iron, Fe	<= 0.35 %	<= 0.35 %
Lead, Pb	1.5 - 2.5 %	1.5 - 2.5 %
Manganese, Mn	<= 0.50 %	<= 0.50 %
Nickel, Ni	7.0 - 9.0 %	7.0 - 9.0 %
Zinc, Zn	21 - 28.5 %	21 - 28.5 %	As Balance

References for this datasheet.

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MC78200x8 / 293138

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