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EN 10132-4 Grade C90S Quenched Steel – Optimal for Springs & Cold‑Rolled Strips

The steel C90S is used as cold rolled strip for springs and special applications in thicknesses of up to 6 mm and as tempered cold strip in thicknesses from 0.30 to 3.00 mm.

Properties

General

PropertyTemperatureValueComment

Density

23.0 °C

7.8 - 7.9 g/cm³

Typical for Medium Carbon Steel

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

200 - 215 GPa

Typical for Medium Carbon Steel

Hardness, Rockwell C

20.0 °C

61 [-]

Hardness, Vickers

20.0 °C

720 [-]

Poisson's ratio

23.0 °C

0.29 [-]

Typical for Medium Carbon Steel

Shear modulus

23.0 °C

75 - 80 GPa

Typical for Carbon Steel

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

1.32E-5 1/K

Typical for Medium Carbon Steel

Max service temperature

500 °C

Typical for Carbon Steel

Melting point

1380 - 1514 °C

Typical for Medium Carbon Steel

Specific heat capacity

23.0 °C

470 - 520 J/(kg·K)

Typical for Medium Carbon Steel

Thermal conductivity

23.0 °C

21 - 52 W/(m·K)

Typical for Medium Carbon Steel

Electrical

PropertyTemperatureValueComment

Electrical resistivity

23.0 °C

1.43E-7 - 1.74E-7 Ω·m

Typical for Carbon Steel

Chemical properties

PropertyValue

Carbon

0.85 - 0.95 %

Chromium

0.4 %

Manganese

0.4 - 0.7 %

Molybdenum

0.1 %

Nickel

0.4 %

Phosphorus

0.03 %

Silicon

0.15 - 0.35 %

Sulfur

0.025 %


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    3. EN 10132-4 Grade C55S Quenched Steel – High‑Performance Cold Rolled Strip for Springs & Precision Applications
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    10. EN 10132-4 Grade C90S Quenched & Tempered Steel – High-Performance Spring Material