MoldMAX HH® Alloy

Alternative and trade names
MoldMAX HH®
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Description

Materion Performance Alloys’ MoldMAX HH (High Hard) Alloy is the premier copper mold alloy. This alloy has a hardness and strength comparable with standard tool steels but its thermal conductivity is at four to six times higher. Its high hardness provides durability in applications where other high conductivity copper alloys fail. The alloy resists galling against other mold alloys, including itself.

This material data has been provided by Materion Brush GmbH.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValue

Density

23.0 °C

8.36 g/cm³

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Mechanical

PropertyTemperatureValueComment

Charpy impact energy

23.0 °C

7 J

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Elastic modulus

23.0 °C

131 GPa

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Elongation

23.0 °C

5 %

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Fatigue strength

23.0 °C

310 MPa

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10⁷ cycles, R=-1

Hardness, Rockwell C

23.0 °C

40 [-]

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Tensile strength

23.0 °C

1170 MPa

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Yield strength Rp0.2

23.0 °C

1000 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

23.0 °C

1.75E-5 1/K

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Melting point

870 °C

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Specific heat capacity

100.0 °C

420 J/(kg·K)

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Thermal conductivity

100.0 °C

130 W/(m·K)

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Chemical properties

PropertyValue

Beryllium

1.6 - 2 %

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Cobalt

0.2 - 0.3 %

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Copper

Balance

Technological properties

Property
Application areas

MoldMAX HH Alloy is used for injection mold cores and cavities and blow mold pinch-offs.