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Rulon Bearings

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Materion Alloy 390 Beryllium Nickel Strip
Categories: Metal; Nonferrous Metal; Beryllium Alloy; Copper Alloy

Material Notes: Alloy 390 was specifically designed for high power applications, providing a unique combination of high strength and high conductivity. Increasing power requirements are driving the need for lower conductor resistance to reduce joule heating. Higher thermal conductivity is critical to thermal management. Higher power requirements are creating harsh environments and higher operating temperatures. Alloy 390 provides excellent stress relaxation resistance at elevated temperatures increasing electrical contact reliability. Alloy 390 has good formability making it possible to create small form factor electrical contacts used in computer, telecommunication, automotive and appliance applications. Alloy 390 is available in strip form ranging from 0.003" to 0.010" thick.

Information supplied by Brush Wellman Engineered Materials.

Brush Engineered Materials Inc. changed its name to Materion Corporation in March 2011.

Key Words: burn in and test socket, bits
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Physical PropertiesOriginal ValueComments
Density 0.318 lb/in³
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 138000 - 158000 psi
Tensile Strength, Yield 135000 - 153000 psi
Elongation at Break >= 1 %
Modulus of Elasticity 20000 ksi
Fatigue Strength 48000 psi
@# of Cycles 1.00e+8
R = -1
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000390 ohm-cmConductivity is 44% IACS
 
Thermal PropertiesOriginal ValueComments
Thermal Conductivity 1536 BTU-in/hr-ft²-°F
 
Component Elements PropertiesOriginal ValueComments
Beryllium, Be 0.15 - 0.50 %
Copper, Cu 97.6 - 98.85 %As remainder
Nickel, Ni 1.0 - 1.4 %
Zirconium, Zr <= 0.50 %
 
Descriptive Properties
Stress Relaxation83%at 150°C for 1000 hr (Initial stress = 75% of 0.2% Offset Yield Strength)

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NBBC14 / 15324

Aluminum Castings

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