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
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.65 - 7.7 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
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
| Property | Temperature | Value | Comment |
|---|---|---|---|
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
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 6.17E-7 - 7E-7 Ω·m |
Chemical properties
| Property | Value |
|---|---|
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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