AMPCO® 21 Forgings

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Description

The increase in the Al and Fe content results in a material in which the hard gamma 2 phase (about 400 HB) is present. By proper metallurgical control this hard constituent is uniformly distributed giving this alloy its ability to resist wear.

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

7.2 g/cm³

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Recycled Content

80 %

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Mechanical

PropertyTemperatureValueComment

Charpy impact energy

23.0 °C

3 J

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Compressive strength

23.0 °C

1335 MPa

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Elastic modulus

23.0 °C

105 GPa

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Elongation A5

23.0 °C

1 %

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Hardness, HBW

23.0 °C

286 [-]

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HBW 10/3000

Hardness, Rockwell C

23.0 °C

31 [-]

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Izod impact energy

23.0 °C

3 J

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Reduction of area

23.0 °C

0.5 %

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Shear strength

23.0 °C

448 MPa

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Tensile strength

23.0 °C

724 MPa

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Yield strength Rp0.5

23.0 °C

407 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

23.0 °C

1.62E-5 1/K

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Specific heat capacity

23.0 °C

420 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

6.00E+6 S/m

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Specific Electrical conductivity

10 % IACS

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Chemical properties

PropertyValue

Aluminium

13.1 %

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Copper

Balance

Iron

4.4 %

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Other

3.5 %

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Technological properties

Property
Application areas

AMPCO® 21 is used for guide port bushings and wear strips replacing hardened steel and for some cams when no impact is involved. However, the largest single use is as die rings, inserts, forming rolls, etc. in forming, bending or drawing operations, especially when stainless steel is the material being processed. AMPCO® 21 is also widely used as work support blades for the centerless grinding of steel rods.