Materion BrushForm® 158 Strip Copper-Nickel-Tin, TM19 (UNS C72900)

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Materion BrushForm® 158 Strip Copper-Nickel-Tin, TM19 (UNS C72900)
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 photochemical machinability, high yield strength and increased fatigue life. The TM18 and TM19 tempers provide excellent flatness and stiffness coupled with high resistance to vibration, fatigue, and impact loading. This makes them ideal for voice coil motor springs in optical image stabilization systems. Information provided by Materion.
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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	>= 375	>= 375
Tensile Strength, Ultimate	1410 MPa	205000 psi
Tensile Strength, Yield	1375 MPa @Strain 0.200 %	199400 psi @Strain 0.200 %
Elongation at Break	1.40 %	1.40 %
Modulus of Elasticity	119 - 145 GPa	17300 - 21000 ksi
Poissons Ratio	0.300	0.300
Shear Modulus	45.8 - 55.8 GPa	6640 - 8090 ksi	Calculated

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	76.0 - 78.0 %	76.0 - 78.0 %
Nickel, Ni	14.5 - 15.5 %	14.5 - 15.5 %
Tin, Sn	7.50 - 8.50 %	7.50 - 8.50 %

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NBB63437d / 323498

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