Bohler-Uddeholm PROtherm® Beryllium Copper Mold Material

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Bohler-Uddeholm PROtherm® Beryllium Copper Mold Material (discontinued **)
Categories:	Metal; Nonferrous Metal; Beryllium Alloy; Copper Alloy
Material Notes:	A high conductivity beryllium copper mold alloy. For applications requiring very high thermal conductivity but with moderate strength and wear demands. PROtherm® is characterized by: Extremely high thermal conductivity Excellent corrosion resistance Good polishability and machinability Good resistance to galling Excellent weldability Rapid, uniform heat transfer Resistance to high temperature (e.g. for engineering thermoplastics) Ability to be coated for higher wear resistance
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Physical Properties	Original Value	Comments

Density	0.319 lb/in³
	0.314 lb/in³ @Temperature 299 °C
	0.316 lb/in³ @Temperature 199 °C

Mechanical Properties	Original Value	Comments
Hardness, Brinell	190	Delivery condition
Tensile Strength, Ultimate	114500 psi
Tensile Strength, Yield	90000 psi	0.2%
Elongation at Break	20 %
Modulus of Elasticity	20000 ksi
	17000 ksi @Temperature 299 °C
	19000 ksi @Temperature 199 °C
Compressive Yield Strength	640 MPa	0.2%

Thermal Properties	Original Value	Comments
CTE, linear	9.80 µin/in-°F @Temperature 199 °C
	10.4 µin/in-°F @Temperature 299 °C
Specific Heat Capacity	0.0910 BTU/lb-°F @Temperature 20.0 °C
	0.114 BTU/lb-°F @Temperature 199 °C
	0.128 BTU/lb-°F @Temperature 299 °C
Thermal Conductivity	245 W/m-K @Temperature 20.0 °C
	268 W/m-K @Temperature 199 °C
	275 W/m-K @Temperature 299 °C

Component Elements Properties	Original Value	Comments
Beryllium, Be	0.40 %
Copper, Cu	97.8 %
Nickel, Ni	1.8 %

**
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NBUCOR30 / 15499

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