EN 10270-1 Grade SM patented cold drawn

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Description

The patented cold drawn steel wire type SM (S-static load M-medium tensile strength) made of unalloyed steel is used for tension springs, compression springs or torsion springs for medium static load or rare dynamic load. The wire will be delivered in rings (standard delivery type), coils or levelled bars. Different surface conditions by arrangement if no arrangements where done, the condition is up to the producer. All surface types can be delivered with oiled surface. More information regarding surface conditions see EN 10270-1. More information regarding surface conditions see EN 10270-1.

Related Standards

Equivalent Materials

This material data has been provided by WIAM.

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

20.0 °C

7.85 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

206 GPa

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Poisson's ratio

23.0 °C

0.29 [-]

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Typical for High Carbon Steel

Reduction of area

20.0 °C

28 - 40 %

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Shear modulus

20.0 °C

81.5 GPa

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Tensile strength

20.0 °C

1020 - 2650 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

1.32E-5 1/K

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Typical for High Carbon Steel

Max service temperature

500 °C

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Typical for Carbon Steel

Melting point

1289 - 1478 °C

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Typical for High Carbon Steel

Specific heat capacity

23.0 °C

486 J/(kg·K)

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Typical for High Carbon Steel

Thermal conductivity

23.0 °C

36 W/(m·K)

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Typical for High Carbon Steel

Electrical

PropertyTemperatureValueComment

Electrical resistivity

23.0 °C

1.43E-7 - 1.74E-7 Ω·m

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Typical for Carbon Steel

Chemical properties

PropertyValue

Carbon

0.35 - 1 %

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Copper

0.2 %

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Manganese

0.4 - 1.2 %

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Phosphorus

0.04 %

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Silicon

0.1 - 0.3 %

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Sulfur

0.035 %

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Technological properties

Property
Features

Spring