Materion Alloy 390E Copper Beryllium Strip

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Materion Alloy 390E Copper Beryllium Strip
Categories:	Metal; Nonferrous Metal; Beryllium Alloy; Copper Alloy
Material Notes:	Alloy 390E is a copper beryllium alloy that provides a unique combination of high strength, high electrical conductivity, and excellent formability. Copper beryllium alloys are well known for their superior stress relaxation resistance and fatigue strength. This allows engineers the flexibility to design small form factor signal and power interconnects that can be used in harsh environments. Information supplied by Materion.
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Physical Properties	Original Value	Comments

Density	8.83 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	>= 300	DPH
Tensile Strength, Ultimate	>= 986 MPa
Tensile Strength, Yield	>= 951 MPa @Strain 0.2 %
Elongation at Break	>= 2.0 % @Thickness >=0.100 mm
Creep Strength	492 MPa @Temperature 200 °C, Time 3.60e+6 sec	Initial stress = 713 MPa (69% retained)
	606 MPa @Temperature 150 °C, Time 3.60e+6 sec	Initial stress = 713 MPa (85% retained)
Modulus of Elasticity	138 GPa
Fatigue Strength	552 MPa @Thickness >=0.100 mm, # of Cycles 1.00e+7	R=0

Electrical Properties	Original Value	Comments
Electrical Resistivity	<= 0.00000374 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	17.6 µm/m-°C
Specific Heat Capacity	0.419 J/g-°C
Thermal Conductivity	208 W/m-K
Melting Point	>= 1029 °C
Solidus	1029 °C

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