X17CrNi16-2 Soft Annealed Steel – DIN 17440 Grade for Pressure Vessels & Industrial Applications
The material X17CrNi16-2, mat. no. 1.4057, is used acc. DIN 17440 : 1996-09 for rods (for pressure vessels), forgings and drawn wire. For the application acc. DIN 17440 : 1985-07 (X 20 CrNi 17 2) resp. acc. DIN EN 10088-1,-2,-3 : 1995-08 (X17CrNi16-2) applies: The quench and temperable grade (17 % Cr) is good resistant to weak lyes and acids, stronger oxidising acids (e.g. nitric acid), water and steam. It is used for high loaded machine parts like pumps and compressors, ship building, food and cosemtic and acetic acid industry. The steel has good running properties and a good wear resistance and is high polishable. Sliding between parts with different conditions should be avoided because 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 - 216 GPa | |
100.0 °C | 213 GPa | ||
200.0 °C | 207 GPa | ||
300.0 °C | 200 GPa | ||
400.0 °C | 192 GPa | ||
Hardness, Brinell | 20.0 °C | 295 [-] | |
Hardness, Vickers | 20.0 °C | 295 [-] | |
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 | 950 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 | 1.1E-5 - 1.12E-5 1/K | ||
400.0 °C | 1.1E-5 - 1.16E-5 1/K | ||
500.0 °C | 1.1E-5 - 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 % |
Metal
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