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EN 10272 Grade X17CrNi16-2 Quenched & Tempered (QT900) – High‑Performance 17% Chromium Steel

The martensitic steel grade X17CrNi16-2 acc. to DIN EN 10272 : 2001-01 is used for hot and cold formed rods for pressure vessels. The material is a heat treatable 17 per cent chrom steel with favorable resistance to water, weak acids and bases as well as to stronger oxidizing acids (e.g. nitrous acid). It shows favorable running properties and abrasion resistance, it is also suitable for mirror finishing. For components sliding on top of each other should be chosen different tempering grades, otherwise risk of seizing.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.65 - 7.7 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

20.0 °C

196 - 215 GPa

100.0 °C

212 GPa

200.0 °C

205 GPa

300.0 °C

200 GPa

400.0 °C

190 GPa

Elongation

20.0 °C

10 - 14 %

Poisson's ratio

23.0 °C

0.3 [-]

Typical for Martensitic Stainless Steel

Shear modulus

23.0 °C

77 GPa

Typical for Martensitic Stainless Steel

Tensile strength

20.0 °C

900 - 1050 MPa

Yield strength Rp0.2

20.0 °C

700 MPa

100.0 °C

565 MPa

150.0 °C

525 MPa

200.0 °C

505 MPa

250.0 °C

490 MPa

300.0 °C

470 MPa

350.0 °C

430 MPa

400.0 °C

375 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

9.2E-6 1/K

20.0 °C

9.9E-6 1/K

100.0 °C

1E-5 - 1.03E-5 1/K

200.0 °C

1.05E-5 - 1.08E-5 1/K

300.0 °C

1.05E-5 - 1.12E-5 1/K

400.0 °C

1.05E-5 - 1.16E-5 1/K

500.0 °C

1.19E-5 1/K

600.0 °C

1.21E-5 1/K

700.0 °C

1.24E-5 1/K

800.0 °C

1.29E-5 1/K

900.0 °C

1.34E-5 1/K

1000.0 °C

1.39E-5 1/K

Melting point

1370 - 1530 °C

Typical for Martensitic Stainless Steel

Specific heat capacity

20.0 °C

450 - 460 J/(kg·K)

100.0 °C

482 J/(kg·K)

200.0 °C

506 J/(kg·K)

300.0 °C

525 J/(kg·K)

400.0 °C

547 J/(kg·K)

500.0 °C

576 J/(kg·K)

600.0 °C

616 J/(kg·K)

Thermal conductivity

20.0 °C

19.6 - 25 W/(m·K)

Thermal diffusivity

20.0 °C

5.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

20.0 °C

6.17E-7 - 7E-7 Ω·m

Chemical properties

PropertyValue

Carbon

0.12 - 0.22 %

Chromium

15 - 17 %

Manganese

1.5 %

Nickel

1.5 - 2.5 %

Phosphorus

0.04 %

Silicon

1 %

Sulfur

0.015 - 0.03 %


Metal

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