DIN 17440 Grade X17CrNi16-2 soft annealed (+A)
DIN 17440 Grade X17CrNi16-2 soft annealed (+A) introduction
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.
Equivalent material: AS 431, GOST 20Ch17N2, ISO 9b, JIS SUS431, NS 14230, PN 2H17N2, SS 2321, UNE F.3427-X15CrNi16, ASTM 431, DIN 1.4057, DIN X20CrNi17-2, AFNOR Z15CN16-02, BS 431S29, BS 321S31, BS 7S80, UNI X16CrNi16, AISI 431, SAE 431, EN X17CrNi16-2, EN 1.4057, ISO X17CrNi16-2, ISO C3, AMS 5628, ASTM MT431, UNS S43100, IS 15Cr16Ni2
DIN 17440 Grade X17CrNi16-2 soft annealed (+A) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.65 - 7.7 g/cm³ |
DIN 17440 Grade X17CrNi16-2 soft annealed (+A) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 9.2E-6 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 9.9E-6 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1E-5 - 1.03E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.05E-5 - 1.08E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.1E-5 - 1.12E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.1E-5 - 1.16E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.1E-5 - 1.19E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.21E-5 1/K |
- |
| - |
700.0 °C |
Coefficient of thermal expansion of 1.24E-5 1/K |
- |
| - |
800.0 °C |
Coefficient of thermal expansion of 1.29E-5 1/K |
- |
| - |
900.0 °C |
Coefficient of thermal expansion of 1.34E-5 1/K |
- |
| - |
1000.0 °C |
Coefficient of thermal expansion of 1.39E-5 1/K |
- |
| Melting point |
- |
Melting point of 1370 - 1530 °C |
Typical for Martensitic Stainless Steel |
| Specific heat capacity |
20.0 °C |
Specific heat capacity of 450 - 460 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 482 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 506 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 525 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 547 J/(kg·K) |
- |
| - |
500.0 °C |
Specific heat capacity of 576 J/(kg·K) |
- |
| - |
600.0 °C |
Specific heat capacity of 616 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 19.6 - 25 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 5.7 mm²/s |
- |
DIN 17440 Grade X17CrNi16-2 soft annealed (+A) chemical
| Property |
Value |
| Carbon |
Carbon of 0.12 - 0.22 % |
| Chromium |
Chromium of 15 - 17 % |
| Manganese |
Manganese of 1.5 % |
| Nickel |
Nickel of 1.5 - 2.5 % |
| Phosphorus |
Phosphorus of 0.04 % |
| Silicon |
Silicon of 1 % |
| Sulfur |
Sulfur of 0.015 % |
DIN 17440 Grade X17CrNi16-2 soft annealed (+A) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 6.17E-7 - 7E-7 Ω·m |
DIN 17440 Grade X17CrNi16-2 soft annealed (+A) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
20.0 °C |
Elastic modulus of 196 - 216 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 213 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 207 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 200 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 192 GPa |
- |
| Hardness, Brinell |
20.0 °C |
Hardness, Brinell of 295 [-] |
- |
| Hardness, Vickers |
20.0 °C |
Hardness, Vickers of 295 [-] |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Martensitic Stainless Steel |
| Shear modulus |
23.0 °C |
Shear modulus of 77 GPa |
Typical for Martensitic Stainless Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 950 MPa |
- |
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