DIN 17440 Grade X2CrNiMo18-15-4 solution annealed (+AT)
DIN 17440 Grade X2CrNiMo18-15-4 solution annealed (+AT) introduction
The for pressure vessels approved steel X2CrNiMo18-15-4, mat. no. 1.4438, shows very good resistance to not oxidising media and halogenated media because of the high amount of Mo, is high polishable and good cold formable is resistant to intercrystalline corrosion in the delivery condition up to 6 mm thickness or up to 40 mm diameter and also in the welded condition, but the corrosion resistance is varying because of chemical composition and the welding conditions. Acc. DIN 17440 : 1996-09 it is used for flat products and rods and drawn wire and acc. DIN 17441 : 1997-02 for cold rolled strips and slit strips for pressure vessels. The limiting application temperature (operating time 100000 h, no intercrystalline corrosion) amounts to 350 degrees C.
For the application acc. DIN 17440 : 1985-07 (X 5 CrNiMo 17 12 2) resp. acc. DIN EN 10088-1,-2,-3 : 1995-08 applies: application for acid resistant apparatus in the chemical and pharmaceutical industry, cellulose industry, textile industry and in the tankship building.
Equivalent material: ISO 24, JIS SUS317L, ÖNORM X2CrNiMo18-16-4KW, SS 2367, ASTM 317L, DIN 1.4438, DIN X2CrNiMo18-16-4, AFNOR Z3CND19-15-04, BS 317S12, UNI X2CrNiMo1816, UNE F.3539, AISI 317L, AISI TP 317L, SAE 317L, SAE TP 317L, JIS SUS317LTP, JIS SUS317LTPY, JIS SUS317LTB, JIS SUS317LFB, JIS SUSF317L, EN X2CrNiMo18-15-4, EN 1.4438, UNS S31703, UNS S31700
DIN 17440 Grade X2CrNiMo18-15-4 solution annealed (+AT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 8 - 8.01 g/cm³ |
DIN 17440 Grade X2CrNiMo18-15-4 solution annealed (+AT) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
-100.0 °C |
Coefficient of thermal expansion of 1.49E-5 1/K |
- |
| - |
20.0 °C |
Coefficient of thermal expansion of 1.61E-5 1/K |
- |
| - |
100.0 °C |
Coefficient of thermal expansion of 1.65E-5 - 1.67E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.72E-5 - 1.75E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.77E-5 - 1.8E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.81E-5 - 1.85E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.84E-5 - 1.9E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.88E-5 1/K |
- |
| - |
700.0 °C |
Coefficient of thermal expansion of 1.91E-5 1/K |
- |
| - |
800.0 °C |
Coefficient of thermal expansion of 1.94E-5 1/K |
- |
| - |
900.0 °C |
Coefficient of thermal expansion of 1.97E-5 1/K |
- |
| - |
1000.0 °C |
Coefficient of thermal expansion of 2E-5 1/K |
- |
| Melting point |
- |
Melting point of 1230 - 1480 °C |
Typical for Austenitic Stainless Steel |
| Specific heat capacity |
-100.0 °C |
Specific heat capacity of 440 J/(kg·K) |
- |
| - |
20.0 °C |
Specific heat capacity of 472 - 500 J/(kg·K) |
- |
| - |
100.0 °C |
Specific heat capacity of 487 J/(kg·K) |
- |
| - |
200.0 °C |
Specific heat capacity of 503 J/(kg·K) |
- |
| - |
300.0 °C |
Specific heat capacity of 512 J/(kg·K) |
- |
| - |
400.0 °C |
Specific heat capacity of 520 J/(kg·K) |
- |
| - |
500.0 °C |
Specific heat capacity of 530 J/(kg·K) |
- |
| - |
600.0 °C |
Specific heat capacity of 541 J/(kg·K) |
- |
| - |
700.0 °C |
Specific heat capacity of 551 J/(kg·K) |
- |
| - |
800.0 °C |
Specific heat capacity of 559 J/(kg·K) |
- |
| - |
900.0 °C |
Specific heat capacity of 565 J/(kg·K) |
- |
| - |
1000.0 °C |
Specific heat capacity of 571 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 13.5 - 14 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 14.9 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 16.7 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 18.3 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 19.8 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 21.3 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 22.7 W/(m·K) |
- |
| - |
700.0 °C |
Thermal conductivity of 24.2 W/(m·K) |
- |
| - |
800.0 °C |
Thermal conductivity of 25.6 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 3.6 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 3.7 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 4 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 4.4 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 4.6 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 4.7 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 4.9 mm²/s |
- |
| - |
700.0 °C |
Thermal diffusivity of 5.2 mm²/s |
- |
| - |
800.0 °C |
Thermal diffusivity of 5.5 mm²/s |
- |
DIN 17440 Grade X2CrNiMo18-15-4 solution annealed (+AT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.03 % |
| Chromium |
Chromium of 17.5 - 19.5 % |
| Manganese |
Manganese of 2 % |
| Molybdenum |
Molybdenum of 3 - 4 % |
| Nickel |
Nickel of 13 - 16 % |
| Nitrogen |
Nitrogen of 0.11 % |
| Phosphorus |
Phosphorus of 0.05 % |
| Silicon |
Silicon of 1 % |
| Sulfur |
Sulfur of 0.015 % |
DIN 17440 Grade X2CrNiMo18-15-4 solution annealed (+AT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 7.75E-7 - 8.5E-7 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 8.42E-7 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 9.04E-7 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 9.62E-7 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 1.01E-6 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 1.06E-6 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 1.1E-6 Ω·m |
| - |
700.0 °C |
Electrical resistivity of 1.13E-6 Ω·m |
| - |
800.0 °C |
Electrical resistivity of 1.16E-6 Ω·m |
DIN 17440 Grade X2CrNiMo18-15-4 solution annealed (+AT) mechanical
| Property |
Temperature |
Value |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 206 GPa |
| - |
20.0 °C |
Elastic modulus of 196 - 200 GPa |
| - |
100.0 °C |
Elastic modulus of 190 - 194 GPa |
| - |
200.0 °C |
Elastic modulus of 182 - 186 GPa |
| - |
300.0 °C |
Elastic modulus of 174 - 179 GPa |
| - |
400.0 °C |
Elastic modulus of 166 - 172 GPa |
| - |
500.0 °C |
Elastic modulus of 158 - 165 GPa |
| - |
600.0 °C |
Elastic modulus of 150 GPa |
| - |
700.0 °C |
Elastic modulus of 142 GPa |
| - |
800.0 °C |
Elastic modulus of 134 GPa |
| Elongation |
20.0 °C |
Elongation of 33 % |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 35 % |
| Poisson's ratio |
20.0 °C |
Poisson's ratio of 0.28 [-] |
| Shear modulus |
20.0 °C |
Shear modulus of 77.3 GPa |
| Tensile strength |
20.0 °C |
Tensile strength of 550 - 700 MPa |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 550 - 700 MPa |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 225 MPa |
| - |
100.0 °C |
Yield strength Rp0.2 of 172 MPa |
| - |
150.0 °C |
Yield strength Rp0.2 of 157 MPa |
| - |
200.0 °C |
Yield strength Rp0.2 of 147 MPa |
| - |
250.0 °C |
Yield strength Rp0.2 of 137 MPa |
| - |
300.0 °C |
Yield strength Rp0.2 of 127 MPa |
| - |
350.0 °C |
Yield strength Rp0.2 of 120 MPa |
| - |
400.0 °C |
Yield strength Rp0.2 of 115 MPa |
| - |
450.0 °C |
Yield strength Rp0.2 of 112 MPa |
| - |
500.0 °C |
Yield strength Rp0.2 of 110 MPa |
| - |
550.0 °C |
Yield strength Rp0.2 of 108 MPa |
| Yield strength Rp0.2, transverse |
20.0 °C |
Yield strength Rp0.2, transverse of 240 MPa |
| Yield strength Rp1.0 |
20.0 °C |
Yield strength Rp1.0 of 255 MPa |
| - |
100.0 °C |
Yield strength Rp1.0 of 206 MPa |
| - |
150.0 °C |
Yield strength Rp1.0 of 188 MPa |
| - |
200.0 °C |
Yield strength Rp1.0 of 177 MPa |
| - |
250.0 °C |
Yield strength Rp1.0 of 167 MPa |
| - |
300.0 °C |
Yield strength Rp1.0 of 156 MPa |
| - |
350.0 °C |
Yield strength Rp1.0 of 148 MPa |
| - |
400.0 °C |
Yield strength Rp1.0 of 144 MPa |
| - |
450.0 °C |
Yield strength Rp1.0 of 140 MPa |
| - |
500.0 °C |
Yield strength Rp1.0 of 138 MPa |
| - |
550.0 °C |
Yield strength Rp1.0 of 136 MPa |
| Yield strength Rp1.0, transverse |
20.0 °C |
Yield strength Rp1.0, transverse of 270 MPa |
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