AMPCO® 18 Continuous cast

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Description

The exceptional wear and fatigue resistance of this alloy results from a controlled duplex alpha and beta phase. This alloy has high strength combined with good ductility and unusual toughness. The physical characteristics of this alloy can be varied by heat treatments (AMPCO® 18.22, 18.23 and 18.136).

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

Compressive strength

23.0 °C

938 MPa

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Elastic modulus

23.0 °C

110 - 112 GPa

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Elongation A5

23.0 °C

16 %

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Hardness, HBW

23.0 °C

174 - 183 [-]

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HBW 10/3000

Hardness, Rockwell B

23.0 °C

88 - 90 [-]

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Proportional limit in compression

23.0 °C

207 MPa

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Reduction of area

23.0 °C

14 - 20 %

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Shear strength

23.0 °C

400 MPa

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Tensile strength

23.0 °C

620 - 662 MPa

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Yield strength Rp0.5

23.0 °C

252 - 280 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

63 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

23.0 °C

8.00E+6 S/m

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Specific Electrical conductivity

14 % IACS

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Chemical properties

PropertyValue

Aluminium

10.5 %

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Copper

Balance

Iron

3.5 %

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Other

0.5 %

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Technological properties

Property
Application areas

This alloy is well suited for use as gears, worm wheels, bushings and bearings. The machine tool industry has adopted AMPCO® 18 as standard for all applications requiring good sliding properties, wear resistance, fatigue resistance, toughness and/or resistance to deformation under load. AMPCO® 18 is used in steel mill service as screw down nuts, slippers (many of which are "cast to size"), gears, wedges and breaker blocks. AMPCO® 18 has an excellent corrosion resistance and is used in pickling service for such parts as hooks, crates and spreaders, etc.