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	Metric	English	Comments

Density	8.36 g/cc	0.302 lb/in³
	8.22 g/cc @Temperature 299 °C	0.297 lb/in³ @Temperature 570 °F
	8.28 g/cc @Temperature 199 °C	0.299 lb/in³ @Temperature 390 °F

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell C	30 - 40	30 - 40	Age-hardened
Tensile Strength, Ultimate	1170 MPa	170000 psi	hardened to 30 HRC
	1280 MPa	185000 psi	hardened to 40 HRC
Tensile Strength, Yield	989.4 MPa @Strain 0.2 %	143500 psi @Strain 0.2 %	hardened to 30 HRC
	1084 MPa @Strain 0.2 %	157200 psi @Strain 0.2 %	hardened to 40 HRC
Elongation at Break	6.0 %	6.0 %	hardened to 40 HRC
	8.0 %	8.0 %	hardened to 30 HRC
Modulus of Elasticity	131 GPa	19000 ksi
	103 GPa @Temperature 299 °C	15000 ksi @Temperature 570 °F
	131 GPa @Temperature 199 °C	19000 ksi @Temperature 390 °F
Compressive Yield Strength	970 MPa	141000 psi	0.2%, hardened to 30 HRC
	1070 MPa	155000 psi	0.2%, hardened to 40 HRC

Thermal Properties	Metric	English	Comments
CTE, linear	17.5 µm/m-°C @Temperature 199 °C	9.70 µin/in-°F @Temperature 390 °F
	17.8 µm/m-°C @Temperature 299 °C	9.90 µin/in-°F @Temperature 570 °F
Specific Heat Capacity	0.381 J/g-°C @Temperature 20.0 °C	0.0910 BTU/lb-°F @Temperature 68.0 °F
	0.477 J/g-°C @Temperature 199 °C	0.114 BTU/lb-°F @Temperature 390 °F
	0.536 J/g-°C @Temperature 299 °C	0.128 BTU/lb-°F @Temperature 570 °F
Thermal Conductivity	110 W/m-K @Temperature 20.0 °C	763 BTU-in/hr-ft²-°F @Temperature 68.0 °F	hardened to 40 HRC
	120 W/m-K @Temperature 20.0 °C	833 BTU-in/hr-ft²-°F @Temperature 68.0 °F	hardened to 30 HRC
	145 W/m-K @Temperature 199 °C	1010 BTU-in/hr-ft²-°F @Temperature 390 °F	hardened to 40 HRC
	155 W/m-K @Temperature 299 °C	1080 BTU-in/hr-ft²-°F @Temperature 570 °F	hardened to 40 HRC
	160 W/m-K @Temperature 199 °C	1110 BTU-in/hr-ft²-°F @Temperature 390 °F	hardened to 30 HRC
	170 W/m-K @Temperature 299 °C	1180 BTU-in/hr-ft²-°F @Temperature 570 °F	hardened to 30 HRC

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

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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