EN 10217-7 Grade X1CrNiMoCuN20-18-7 solution annealed (+AT)
EN 10217-7 Grade X1CrNiMoCuN20-18-7 solution annealed (+AT) introduction
The austenitic steel X1CrNiMoCuN20-18-7 is available in the solution annealed condition. Welded circular tubes of this steel are used for compression load and for corrosive load at room temperature, low temperatures and elevated temperatures. The material is resistant to intercrystalline corrosion (up to 400 °C) also in the welded condition.
Equivalent material: GB 015Cr20Ni18Mo6CuN, GB S31252, IS S30815, JIS SUS312LTB, AISI 321, AISI Type321, ASTM A249UNSS31254, ASTM A688UNSS31254, UNS S31254, DIN 1.4547, DIN X1CrNiMoCuN20-18-7, AFNOR Z1CNDU20-18-06Az, BS X1CrNiMoCuN20-18-7, AISI F44, AISI 254SMO, SAE F44, SAE 254SMO, JIS SUS312L, JIS SUS 312LTB, EN 1.4547, ISO X1CrNiMoCuN20-18-7, ISO 4547-312-54-I, ISO AM45A, ISO 34, ASTM Grade F44, ASTM F44, ASTM Grade 8MLCuNA
EN 10217-7 Grade X1CrNiMoCuN20-18-7 solution annealed (+AT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 8 g/cm³ |
EN 10217-7 Grade X1CrNiMoCuN20-18-7 solution annealed (+AT) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
100.0 °C |
Coefficient of thermal expansion of 1.65E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.7E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.75E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.8E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.8E-5 1/K |
- |
| Melting point |
- |
Melting point of 1230 - 1480 °C |
Typical for Austenitic Stainless Steel |
| Specific heat capacity |
20.0 °C |
Specific heat capacity of 500 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 14 W/(m·K) |
- |
EN 10217-7 Grade X1CrNiMoCuN20-18-7 solution annealed (+AT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.02 % |
| Chromium |
Chromium of 19.5 - 20.5 % |
| Copper |
Copper of 0.5 - 1 % |
| Manganese |
Manganese of 1 % |
| Molybdenum |
Molybdenum of 6 - 7 % |
| Nickel |
Nickel of 17.5 - 18.5 % |
| Nitrogen |
Nitrogen of 0.18 - 0.25 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.7 % |
| Sulfur |
Sulfur of 0.01 % |
EN 10217-7 Grade X1CrNiMoCuN20-18-7 solution annealed (+AT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 8.5E-7 Ω·m |
EN 10217-7 Grade X1CrNiMoCuN20-18-7 solution annealed (+AT) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
20.0 °C |
Elastic modulus of 195 GPa |
- |
| - |
100.0 °C |
Elastic modulus of 190 GPa |
- |
| - |
200.0 °C |
Elastic modulus of 182 GPa |
- |
| - |
300.0 °C |
Elastic modulus of 174 GPa |
- |
| - |
400.0 °C |
Elastic modulus of 166 GPa |
- |
| - |
500.0 °C |
Elastic modulus of 158 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 35 % |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 30 % |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Austenitic Stainless Steel |
| Shear modulus |
23.0 °C |
Shear modulus of 77 GPa |
Typical for Austenitic Stainless Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 650 - 850 MPa |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 650 - 850 MPa |
- |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 300 MPa |
- |
| - |
50.0 °C |
Yield strength Rp0.2 of 267 MPa |
- |
| - |
100.0 °C |
Yield strength Rp0.2 of 230 MPa |
- |
| - |
150.0 °C |
Yield strength Rp0.2 of 205 MPa |
- |
| - |
200.0 °C |
Yield strength Rp0.2 of 190 MPa |
- |
| - |
250.0 °C |
Yield strength Rp0.2 of 180 MPa |
- |
| - |
300.0 °C |
Yield strength Rp0.2 of 170 MPa |
- |
| - |
350.0 °C |
Yield strength Rp0.2 of 165 MPa |
- |
| - |
400.0 °C |
Yield strength Rp0.2 of 160 MPa |
- |
| - |
450.0 °C |
Yield strength Rp0.2 of 153 MPa |
- |
| - |
500.0 °C |
Yield strength Rp0.2 of 148 MPa |
- |
| Yield strength Rp0.2, transverse |
20.0 °C |
Yield strength Rp0.2, transverse of 300 MPa |
- |
| Yield strength Rp1.0 |
20.0 °C |
Yield strength Rp1.0 of 340 MPa |
- |
| - |
50.0 °C |
Yield strength Rp1.0 of 306 MPa |
- |
| - |
100.0 °C |
Yield strength Rp1.0 of 270 MPa |
- |
| - |
150.0 °C |
Yield strength Rp1.0 of 245 MPa |
- |
| - |
200.0 °C |
Yield strength Rp1.0 of 225 MPa |
- |
| - |
250.0 °C |
Yield strength Rp1.0 of 212 MPa |
- |
| - |
300.0 °C |
Yield strength Rp1.0 of 200 MPa |
- |
| - |
350.0 °C |
Yield strength Rp1.0 of 195 MPa |
- |
| - |
400.0 °C |
Yield strength Rp1.0 of 190 MPa |
- |
| - |
450.0 °C |
Yield strength Rp1.0 of 184 MPa |
- |
| - |
500.0 °C |
Yield strength Rp1.0 of 180 MPa |
- |
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