Materion Brushform® 290 Beryllium Copper Alloy Strip; TM00 Temper (UNS C17200)

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Materion Brushform® 290 Beryllium Copper Alloy Strip; TM00 Temper (UNS C17200) (discontinued **)
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: 97% Stress Relaxation after 1000 hrs @ 200°C: 76% Formability Ratio, 90° Bend, Radius/Thickness (Good Way): 0 Formability Ratio (bad Way): 0 Superficial Hardness: 30T 81-30N52 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 B	>= 98	>= 98
Hardness, Rockwell C	<= 31	<= 31
Hardness, Vickers	225 - 309	225 - 309
Tensile Strength, Ultimate	>= 680 MPa	>= 98600 psi
Tensile Strength, Yield	510 - 670 MPa	74000 - 97200 psi
Elongation at Break	19 - 35 %	19 - 35 %
Modulus of Elasticity	131 GPa	19000 ksi
Fatigue Strength	280 - 310 MPa @# of Cycles 1.00e+8	40600 - 45000 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 %

**
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