AMPCO® M4 Forged rounds

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Description

The patented process gives AMPCO® M4 mechanical properties beyond the range of commercial nickel-aluminium bronzes, comparable to beryllium copper at a lower cost and without the beryllium copper industrial hygiene requirements.

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

PropertyTemperatureValue

Density

23.0 °C

7.45 g/cm³

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Recycled Content

80 %

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Mechanical

PropertyTemperatureValueComment

Charpy impact energy

23.0 °C

7 J

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Compressive strength

23.0 °C

1324 MPa

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Compressive yield strength, 0.1%

23.0 °C

689 MPa

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Elastic modulus

23.0 °C

124 GPa

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Elongation A5

23.0 °C

5 %

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Fatigue strength

23.0 °C

352 MPa

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100.000.000 cycles

Hardness, HBW

23.0 °C

260 [-]

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HBW 10/3000

Hardness, Rockwell C

23.0 °C

26 [-]

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Reduction of area

23.0 °C

12 %

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Shear strength

23.0 °C

538 MPa

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Tensile strength

23.0 °C

800 MPa

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Yield strength Rp0.2

23.0 °C

500 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

23.0 °C

1.6E-5 1/K

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Specific heat capacity

23.0 °C

450 J/(kg·K)

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Thermal conductivity

23.0 °C

42 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

23.0 °C

4.80E+6 S/m

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Specific Electrical conductivity

8.2 % IACS

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Chemical properties

PropertyValue

Copper

Balance

Technological properties

Property
Application areas

AMPCO® M4 was initially developed as an aircraft specification alloy for gears in retractable landing assemblies, engine spacer bearings and other similar applications. It is rapidly growing in use where higher mechanical properties at elevated temperatures together with corrosion-resistant properties are required. Typical applications include aircraft landing gear bearings and bushings, bending dies (shoes and mandrels) for the tube bending industry, gear wheels and wear/guide plates...