DIN 17440 Grade X20Cr13 Quenched & Tempered (+QT) – High‑Performance Stainless Steel for Industrial Applications
Propertties: - good corrosion resistance to water and steam - is able for high gloss polishing - application temperature: -40 up to 550°C Application: - for construction elements, requiring higher strengths because higher mechanical loadings - axis, parts for pumps, plunger, valve cone, nozzle pin, propeller for ships - also for beater bars and surgical instruments
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.7 - 7.71 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 216 - 222 GPa | |
100.0 °C | 213 - 216 GPa | ||
200.0 °C | 207 - 209 GPa | ||
300.0 °C | 200 - 201 GPa | ||
400.0 °C | 192 GPa | ||
500.0 °C | 183 GPa | ||
600.0 °C | 174 GPa | ||
Elongation | 20.0 °C | 12 - 14 % | |
Elongation, transverse | 20.0 °C | 8 - 10 % | |
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 | 650 - 950 MPa | |
Tensile strength, transverse | 20.0 °C | 650 - 950 MPa | |
Yield strength | 20.0 °C | 450 MPa | |
Yield strength Rp0.2 | 20.0 °C | 450 MPa | |
50.0 °C | 430 MPa | ||
100.0 °C | 420 MPa | ||
150.0 °C | 410 MPa | ||
200.0 °C | 400 MPa | ||
250.0 °C | 382 MPa | ||
300.0 °C | 365 MPa | ||
350.0 °C | 335 MPa | ||
400.0 °C | 305 MPa | ||
Yield strength Rp0.2, transverse | 20.0 °C | 450 MPa | |
Yield strength, transverse | 20.0 °C | 450 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 20.0 °C | 1.02E-5 1/K | |
100.0 °C | 1.05E-5 1/K | ||
200.0 °C | 1.09E-5 - 1.1E-5 1/K | ||
300.0 °C | 1.13E-5 - 1.15E-5 1/K | ||
400.0 °C | 1.16E-5 - 1.2E-5 1/K | ||
500.0 °C | 1.2E-5 1/K | ||
600.0 °C | 1.22E-5 1/K | ||
Max service temperature, long | -40 - 550 °C | ||
Melting point | 1370 - 1530 °C | Typical for Martensitic Stainless Steel | |
Specific heat capacity | 20.0 °C | 439 - 460 J/(kg·K) | |
100.0 °C | 474 J/(kg·K) | ||
200.0 °C | 498 J/(kg·K) | ||
300.0 °C | 517 J/(kg·K) | ||
400.0 °C | 538 J/(kg·K) | ||
500.0 °C | 564 J/(kg·K) | ||
600.0 °C | 598 J/(kg·K) | ||
Thermal conductivity | 20.0 °C | 24.6 - 30 W/(m·K) | |
100.0 °C | 24.7 W/(m·K) | ||
200.0 °C | 25 W/(m·K) | ||
300.0 °C | 25.2 W/(m·K) | ||
400.0 °C | 25.5 W/(m·K) | ||
500.0 °C | 25.8 W/(m·K) | ||
600.0 °C | 26 W/(m·K) | ||
Thermal diffusivity | 20.0 °C | 7.3 mm²/s | |
100.0 °C | 6.4 mm²/s | ||
200.0 °C | 6.1 mm²/s | ||
300.0 °C | 5.8 mm²/s | ||
400.0 °C | 5.4 mm²/s | ||
500.0 °C | 4.8 mm²/s | ||
600.0 °C | 4.1 mm²/s | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 5.87E-7 - 6E-7 Ω·m |
100.0 °C | 6.55E-7 Ω·m | |
200.0 °C | 7.38E-7 Ω·m | |
300.0 °C | 8.19E-7 Ω·m | |
400.0 °C | 8.96E-7 Ω·m | |
500.0 °C | 9.7E-7 Ω·m | |
600.0 °C | 1.04E-6 Ω·m | |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.16 - 0.25 % |
Chromium | 12 - 14 % |
Manganese | 1 - 1.5 % |
Phosphorus | 0.04 - 0.05 % |
Silicon | 1 % |
Sulfur | 0.015 - 0.03 % |
Metal
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