AMPCO® M4 Extrusions

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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.

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

7.45 g/cm³

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23.0 °C

Mechanical

PropertyValueTemperatureComment

Charpy impact energy

7 J

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23.0 °C

Compressive strength

1324 MPa

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23.0 °C

Compressive yield strength, 0.1%

689 - 731 MPa

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23.0 °C

Elastic modulus

124 GPa

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23.0 °C

Elongation A5

8 %

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23.0 °C

Fatigue strength

352 MPa

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23.0 °C

100.000.000 cycles

Hardness, HBW

286 [-]

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23.0 °C

HBW 10/3000

Hardness, Rockwell C

29 [-]

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23.0 °C

Reduction of area

12 - 13 %

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23.0 °C

Shear strength

538 MPa

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23.0 °C

Tensile strength

965 - 1000 MPa

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23.0 °C

Yield strength Rp0.5

724 - 793 MPa

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23.0 °C

Thermal

PropertyValueTemperature

Coefficient of thermal expansion

1.6E-5 1/K

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23.0 °C

Specific heat capacity

450 J/(kg·K)

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23.0 °C

Thermal conductivity

42 W/(m·K)

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23.0 °C

Electrical

PropertyValueTemperature

Electrical conductivity

4.80E+6 S/m

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23.0 °C

Specific Electrical conductivity

8.2 % IACS

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Chemical properties

Property

Aluminium

10.5 %

Copper

Balance

Iron

4.8 %

Manganese

1.5 %

Nickel

5 %

Other

0.5 %

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, etc..