EN 10090 Grade X45CrSi9-3 quenched and tempered (+QT)

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Description

X45CrSi9-3 is a martensitic Cr-Si-alloyed valve steel. The steel shows excellent nitriding and surface hardenability, it is suitable for upsetting. Moderate resistance in exhaust condensate. This applies also to lead compounds at increased temperatures. Tempering resistance at continuous operation up to approx. 700 deg. Use: inlet valves, shanks, valves

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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

7.7 g/cm³

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Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

210 GPa

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Elongation

20.0 °C

14 %

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Hardness, Brinell

20.0 °C

266 - 325 [-]

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Poisson's ratio

23.0 °C

0.3 [-]

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Typical for Martensitic Stainless Steel

Reduction of area

20.0 °C

40 %

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Shear modulus

23.0 °C

77 GPa

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Typical for Martensitic Stainless Steel

Tensile strength

20.0 °C

900 - 1100 MPa

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500.0 °C

500 MPa

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550.0 °C

360 MPa

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600.0 °C

250 MPa

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650.0 °C

170 MPa

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700.0 °C

110 MPa

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Yield strength Rp0.2

20.0 °C

700 MPa

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500.0 °C

400 MPa

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550.0 °C

300 MPa

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600.0 °C

240 MPa

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650.0 °C

120 MPa

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700.0 °C

80 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

100.0 °C

1.09E-5 1/K

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300.0 °C

1.12E-5 1/K

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500.0 °C

1.15E-5 1/K

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700.0 °C

1.18E-5 1/K

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Melting point

1370 - 1530 °C

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Typical for Martensitic Stainless Steel

Specific heat capacity

20.0 °C

500 J/(kg·K)

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Thermal conductivity

20.0 °C

21 W/(m·K)

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Electrical

PropertyTemperatureValueComment

Electrical resistivity

23.0 °C

6E-7 Ω·m

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Typical for Martensitic Stainless Steel

Chemical properties

PropertyValue

Carbon

0.4 - 0.5 %

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Chromium

8 - 10 %

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Manganese

0.6 %

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Nickel

0.5 %

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Phosphorus

0.04 %

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Silicon

2.7 - 3.3 %

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Sulfur

0.03 %

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