DIN 17440 Grade X20CrNi17-2 quenched and tempered (+QT)
DIN 17440 Grade X20CrNi17-2 quenched and tempered (+QT) introduction
Properties:
- 17%-Cr-steel, able for quenching and tempering
- good resistance to water, weak acids, brines and stronger oxidising acids (nitric acid)
- good runnability and wear properties
- high polishable
- danger of galling, so use different grades of quenching and tempering when slide contact
- application temperature: -40 to 550 °C
Application:
- for high-loaded engine pieces, like pump and compressor construction, shipbuilding
- food industry, soap industry and acetic acid industry
Equivalent material: AS 431, GB 1Cr17Ni2, GB ML1Cr17Ni2, AFNOR Z15CN16-02, BS 431S29, GOST 20Ch17N2, ISO 9b, UNI X16CrNi16, JIS SUS431, NS 14230, PN 2H17N2, SS 2321, UNE F.3427, UNE X15CrNi16, ASTM 431, DIN X17CrNi16-2, DIN 1.4057, BS 321S31, BS 7S80, 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 X20CrNi17-2 quenched and tempered (+QT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.65 - 7.7 g/cm³ |
DIN 17440 Grade X20CrNi17-2 quenched and tempered (+QT) 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 |
- |
| Max service temperature, long |
- |
Max service temperature, long of -40 - 550 °C |
- |
| 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 X20CrNi17-2 quenched and tempered (+QT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.14 - 0.23 % |
| Chromium |
Chromium of 15.5 - 17.5 % |
| Manganese |
Manganese of 1 % |
| Nickel |
Nickel of 1.5 - 2.5 % |
| Phosphorus |
Phosphorus of 0.05 % |
| Silicon |
Silicon of 1 % |
| Sulfur |
Sulfur of 0.03 % |
DIN 17440 Grade X20CrNi17-2 quenched and tempered (+QT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 6.17E-7 - 7E-7 Ω·m |
DIN 17440 Grade X20CrNi17-2 quenched and tempered (+QT) 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 |
- |
| Elongation |
20.0 °C |
Elongation of 10 - 14 % |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 5 - 10 % |
- |
| 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 750 - 950 MPa |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 750 - 950 MPa |
- |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 550 MPa |
- |
| - |
50.0 °C |
Yield strength Rp0.2 of 515 MPa |
- |
| - |
100.0 °C |
Yield strength Rp0.2 of 495 MPa |
- |
| - |
150.0 °C |
Yield strength Rp0.2 of 475 MPa |
- |
| - |
200.0 °C |
Yield strength Rp0.2 of 460 MPa |
- |
| - |
250.0 °C |
Yield strength Rp0.2 of 450 MPa |
- |
| - |
300.0 °C |
Yield strength Rp0.2 of 430 MPa |
- |
| - |
350.0 °C |
Yield strength Rp0.2 of 390 MPa |
- |
| - |
400.0 °C |
Yield strength Rp0.2 of 345 MPa |
- |
| Yield strength Rp0.2, transverse |
20.0 °C |
Yield strength Rp0.2, transverse of 550 MPa |
- |
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