AMPCOLOY® 940 Forgings

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Description

AMPCOLOY® 940 is a patented alloy which meets the demands of users of the RWMA class 3 alloys without beryllium. In the industrialized countries, stricter health and safety instructions on the use of noxious elements have forced AMPCO METAL to develop this new alloy. It replaces the AMPCOLOY® 95 in practically all applications.

Equivalent Materials

This material data has been provided by AMPCO METAL.

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

PropertyValueTemperature

Density

8.71 g/cm³

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23.0 °C

Mechanical

PropertyValueTemperatureComment

Compressive yield strength, 0.1%

552 MPa

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23.0 °C

Elastic modulus

131 GPa

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23.0 °C

Elongation A5

11 %

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23.0 °C

Hardness, HBW

210 [-]

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23.0 °C

HBW 10/3000

Hardness, Rockwell B

95 [-]

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23.0 °C

Reduction of area

20 %

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23.0 °C

Tensile strength

648 MPa

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23.0 °C

Yield strength Rp0.5

496 MPa

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23.0 °C

Thermal

PropertyValueTemperature

Coefficient of thermal expansion

1.75E-5 1/K

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23.0 °C

Specific heat capacity

380 J/(kg·K)

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23.0 °C

Thermal conductivity

208 W/(m·K)

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23.0 °C

Electrical

PropertyValueTemperature

Electrical conductivity

2.80E+7 S/m

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23.0 °C

Specific Electrical conductivity

48 % IACS

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Chemical properties

Property

Chromium

0.4 %

Copper

Balance

Nickel

2.5 %

Silicon

0.7 %

Technological properties

Property
Application areas

AMPCOLOY® 940 is used wherever a good electrical or thermal conductivity is required together with high mechanical properties: Electrode holders and seam welding shafts, Spot welding electrodes, seam welding discs, projection and butt welding dies, principally for stainless steel and Monel, Plunger tips for cold chamber aluminium high pressure die casting machines and moulds for low pressure die casting machines, Parts of moulds for injection moulding of plastics, injection-nozzles and cooling pins, Chill moulds for casting brass and certain bronzes, Brake drums for paper winding rolls, Warm pressed parts for energy engineering.