Bohler-Uddeholm BeCu Alloy 172 Mold Material

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Bohler-Uddeholm BeCu Alloy 172 Mold Material
Categories:	Metal; Nonferrous Metal; Beryllium Alloy; Copper Alloy
Material Notes:	Beryllium copper alloy A high strength beryllium copper mold alloy with high thermal conductivity. BeCu Alloy 172 is characterized by: High thermal conductivity Good corrosion resistance Good polishability Good wear resistance Good resistance to galling Good machinability High strength and hardness Excellent weldability The special properties of BeCu Alloy 172 beryllium copper alloy make it a suitable mold/core/insert material for a wide variety of molding situations but especially where a combination of high thermal conductivity, corrosion resistance and good polishability are needed. Blow molds: pinch offs, neck rings and handle inserts. Injection mold: molds, cores, inserts. Injection nozzles and manifolds for hot runner systems.
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Physical Properties	Original Value	Comments

Density	0.302 lb/in³
	0.297 lb/in³ @Temperature 299 °C
	0.299 lb/in³ @Temperature 199 °C

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	30 - 40	Age-hardened
Tensile Strength, Ultimate	170000 psi	hardened to 30 HRC
	185000 psi	hardened to 40 HRC
Tensile Strength, Yield	143500 psi @Strain 0.2 %	hardened to 30 HRC
	157200 psi @Strain 0.2 %	hardened to 40 HRC
Elongation at Break	6.0 %	hardened to 40 HRC
	8.0 %	hardened to 30 HRC
Modulus of Elasticity	19000 ksi
	15000 ksi @Temperature 299 °C
	19000 ksi @Temperature 199 °C
Compressive Yield Strength	970 MPa	0.2%, hardened to 30 HRC
	1070 MPa	0.2%, hardened to 40 HRC

Thermal Properties	Original Value	Comments
CTE, linear	9.70 µin/in-°F @Temperature 199 °C
	9.90 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	110 W/m-K @Temperature 20.0 °C	hardened to 40 HRC
	120 W/m-K @Temperature 20.0 °C	hardened to 30 HRC
	145 W/m-K @Temperature 199 °C	hardened to 40 HRC
	155 W/m-K @Temperature 299 °C	hardened to 40 HRC
	160 W/m-K @Temperature 199 °C	hardened to 30 HRC
	170 W/m-K @Temperature 299 °C	hardened to 30 HRC

Component Elements Properties	Original Value	Comments
Beryllium, Be	1.9 %
Co + Ni	0.25 %
Copper, Cu	97.85 %

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