ToughMet® 3AT Ring AT (C72900)

Alternative and trade names
ToughMet® 3AT Alloy
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Description

ToughMet 3 AT alloy is a wrought, spinodally hardened copper alloy engineered for high strength and hardness. It resists mechanical wear, galling, stress relaxation, corrosion and erosion. ToughMet 3 alloy retains its strength at elevated temperature. It is non-magnetic and easy to machine into complex components.

Related Standards

This material data has been provided by Materion Brush GmbH.

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

9 g/cm³

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Dimension

PropertyValue

Diameter

380 - 2032 mm

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Mechanical

PropertyTemperatureValue

Elastic modulus

23.0 °C

144 GPa

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Elongation

23.0 °C

4 %

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Hardness, Rockwell C

23.0 °C

28 [-]

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Poisson's ratio

23.0 °C

0.33 [-]

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Tensile strength

23.0 °C

758 MPa

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Yield strength Rp0.2

23.0 °C

724 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

23.0 °C

1.64E-5 1/K

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Thermal conductivity

23.0 °C

38 W/(m·K)

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Electrical

PropertyTemperatureValueComment

Electrical conductivity

23.0 °C

4.00E+6 S/m

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max.

Specific Electrical conductivity

7 % IACS

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max.

Magnetic

PropertyTemperatureValue

Relative magnetic permeability

23.0 °C

1 [-]

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Chemical properties

PropertyValue

Copper

Balance

Nickel

15 %

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Tin

8 %

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Technological properties

Property
Application areas

ToughMet 3 AT alloy is used for bushings and bearings for commercial aircraft, high performance engines as well as mining, industrial and heavy equipment. It is also used to make oil and gas drilling hardware, including rotary steerable housings, kelly valve seats and pressure housings.

Surface Finish

Mill hardened finish