DIN 17212 Grade 38Cr4 quenched and tempered (+QT)

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Description

The in the quenched and tempered condition flame and induction hardenable alloyed special steel has a, compared to the common quenched and tempered steel, constricted range of the C content and a lower maximum value of the P content. The steel is suitable for flash welding, if prooved conditions will be kept. For better machining the steel can be soft annealed. In this soft annealed and also in the normalised condition the material is unrestrained cold shearable. A maximum value for nonmetallic inclusions by arrangement. Delivery forms: - semi-finished product, rolled or forged - steel bars, hot-rolled or hot forged - wire, hot-rolled - sheet, strip and wide flats, hot-rolled - tubes, coils, seamless - open die and drop forgings Application: car industry, engine construction, mechanical engineering

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

PropertyTemperatureValueComment

Density

23.0 °C

7.8 - 7.9 g/cm³

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Typical for Chromium Steel

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

200 - 215 GPa

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Typical for Chromium Steel

Elongation

20.0 °C

11 - 14 %

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Hardness, Rockwell F

20.0 °C

53 [-]

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Poisson's ratio

23.0 °C

0.29 [-]

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Typical for Chromium Steel

Reduction of area

20.0 °C

40 - 50 %

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Tensile strength

20.0 °C

740 - 1130 MPa

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Yield strength

20.0 °C

510 - 740 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

9.4E-6 - 1.5E-5 1/K

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Typical for Chromium Steel

Melting point

1382 - 1529 °C

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Typical for Chromium Steel

Specific heat capacity

23.0 °C

440 - 494 J/(kg·K)

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Typical for Chromium Steel

Thermal conductivity

23.0 °C

23 - 50 W/(m·K)

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Typical for Chromium Steel

Chemical properties

PropertyValue

Carbon

0.34 - 0.4 %

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Chromium

0.9 - 1.2 %

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Manganese

0.6 - 0.9 %

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Phosphorus

0.03 %

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Silicon

0.15 - 0.4 %

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Sulfur

0.035 %

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