Materion BrushForm® 158 Copper-Nickel-Tin Mill Hardened Strip (UNS C72900), TM04

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Materion BrushForm® 158 Copper-Nickel-Tin Mill Hardened Strip (UNS C72900), TM04
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	BrushForm® 158 Strip is a high-performance, heat treated spinodal copper nickel tin alloy designed to provide optimal formability and strength characteristics in conductive spring applications such as electronic connectors, switches, and sensors. Information supplied by Materion.
Key Words:	ASTM B740
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Physical Properties	Metric	English	Comments

Density	9.00 g/cc	0.325 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Vickers	245 - 345	245 - 345
Tensile Strength, Ultimate	>= 895 MPa	>= 130000 psi
Tensile Strength, Yield	790 - 900 MPa @Strain 0.2 %	115000 - 131000 psi @Strain 0.2 %
Elongation at Break	10 % @Thickness >=0.100 mm	10 % @Thickness >=0.00394 in
Modulus of Elasticity	144 GPa	20900 ksi
Poissons Ratio	0.30	0.30
Shear Modulus	55.4 GPa	8040 ksi	Calculated
Bend Radius, Minimum	1.0 t	1.0 t	Longitudinal
	1.0 t	1.0 t	Transverse

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0000250 ohm-cm	0.0000250 ohm-cm
Magnetic Permeability	<= 1.01	<= 1.01

Thermal Properties	Metric	English	Comments
CTE, linear	16.4 µm/m-°C	9.11 µin/in-°F

Component Elements Properties	Metric	English	Comments
Copper, Cu	76 - 78 %	76 - 78 %	As Balance
Nickel, Ni	14.5 - 15.5 %	14.5 - 15.5 %
Tin, Sn	7.5 - 8.5 %	7.5 - 8.5 %

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NBB63422 / 192277

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