Materion Brushform® 290 Beryllium Copper Alloy Strip; TM04 Temper (UNS C17200)

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Materion Brushform® 290 Beryllium Copper Alloy Strip; TM04 Temper (UNS C17200)
Categories:	Metal; Nonferrous Metal; Beryllium Alloy; Copper Alloy
Material Notes:	Treatment required for max strength: Mill Hardened Stress Relaxation-% Stress Remaining after 1000 hrs @ 100°C: 98% Stress Relaxation after 1000 hrs @ 200°C: 77% Formability Ratio, 90° Bend, Radius/Thickness (Good Way): 1 Formability Ratio (bad Way): 1 Superficial Hardness: 30N 48-58 Tabulated properties apply to products after age hardening. Information supplied by Brush Wellman. Brush Engineered Materials Inc. changed its name to Materion Corporation in March 2011.
Key Words:	ASTM B-194
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Physical Properties	Metric	English	Comments

Density	8.36 g/cc	0.302 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	28 - 38	28 - 38
Hardness, Vickers	285 - 369	285 - 369
Tensile Strength, Ultimate	>= 960 MPa	>= 139000 psi
Tensile Strength, Yield	790 - 940 MPa	115000 - 136000 psi
Elongation at Break	9.0 - 25 %	9.0 - 25 %
Modulus of Elasticity	131 GPa	19000 ksi
Fatigue Strength	300 - 340 MPa @# of Cycles 1.00e+8	43500 - 49300 psi @# of Cycles 1.00e+8	Reverse Bending (R=1)

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000660 - 0.0000101 ohm-cm	0.00000660 - 0.0000101 ohm-cm	17-26% IACS Conductivity

Thermal Properties	Metric	English	Comments
CTE, linear	17.0 µm/m-°C @Temperature 20.0 - 200 °C	9.44 µin/in-°F @Temperature 68.0 - 392 °F
Thermal Conductivity	105 W/m-K	729 BTU-in/hr-ft²-°F
Melting Point	870 - 980 °C	1600 - 1800 °F
Solidus	870 °C	1600 °F
Liquidus	980 °C	1800 °F

Component Elements Properties	Metric	English	Comments
Beryllium, Be	1.8 - 2.0 %	1.8 - 2.0 %
Co + Ni	>= 0.20 %	>= 0.20 %
Co + Ni + Fe	<= 0.60 %	<= 0.60 %
Copper, Cu	98 %	98 %	as balance
Lead, Pb	<= 0.020 %	<= 0.020 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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