AMPCOLOY® 83 Sand castings

Alternative and trade names
2.1247
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Description

2.1247 is a 2 % beryllium copper alloy which displays very high mechanical properties with a reasonably good electrical and thermal conductivity.

Related Standards

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

PropertyTemperatureValue

Density

23.0 °C

8.26 g/cm³

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Recycled Content

80 %

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

126 GPa

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Elongation A5

23.0 °C

2 %

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Hardness, HBW

23.0 °C

320 [-]

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HBW 10/3000

Hardness, Rockwell C

23.0 °C

33 [-]

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Tensile strength

23.0 °C

830 MPa

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Yield strength Rp0.5

23.0 °C

586 MPa

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Thermal

PropertyTemperatureValue

Coefficient of thermal expansion

23.0 °C

1.75E-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

106 W/(m·K)

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Electrical

PropertyTemperatureValue

Electrical conductivity

23.0 °C

1.16E+7 S/m

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Specific Electrical conductivity

20 % IACS

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Chemical properties

PropertyValueComment

Beryllium

2 %

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Cobalt

0.5 %

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Co+Ni

Copper

Balance

Nickel

0.5 %

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Co+Ni

Other

0.5 %

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Technological properties

Property
Application areas

2.1247 is used wherever good wear resistance or high mechanical properties are desired coupled with a good electrical or thermal conductivity, such as: Flash butt welding and butt welding, Parts for electrical components, in the plastic mould industry is sometimes used as chill plates and inserts in the moulds, cooling pins and neck rings or bottom plates for blow moulds of plastic bottles.