SEW 470 Grade X9CrNiSiNCe21-11-2 solution annealed (+AT)
SEW 470 Grade X9CrNiSiNCe21-11-2 solution annealed (+AT) introduction
Fully austenitic steel of high scaling temp. of 1150°C in air (highest application temp. in air), warranted scaling resistance for wide and fast thermal fluctuation, but no resistance in reducing athmosphere. Excellent creep behaviour and high deformation resistance. Application for furnace components, hood annealing and muffle furnaces, lifting bar furnaces, sealing sheets, radiator tubes, charging cages, insert boxes, recuperators as well as for combustion nozzles and for strongly loaded components of waste gas detoxification facilities.
Equivalent material: ISO X7CrNiSiNCe21-11, ASTM A240UNSS30815, ASTM A479UNSS30815, UNS S30815, DIN 1.4835, DIN X10CrNiSiN21-11, DIN X9CrNiSiNCe21-11-2, AISI 253MA, SAE 253MA, EN 1.4835, ASTM F45
SEW 470 Grade X9CrNiSiNCe21-11-2 solution annealed (+AT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.8 g/cm³ |
SEW 470 Grade X9CrNiSiNCe21-11-2 solution annealed (+AT) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
200.0 °C |
Coefficient of thermal expansion of 1.7E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.8E-5 1/K |
- |
| - |
600.0 °C |
Coefficient of thermal expansion of 1.85E-5 1/K |
- |
| - |
800.0 °C |
Coefficient of thermal expansion of 1.9E-5 1/K |
- |
| - |
1000.0 °C |
Coefficient of thermal expansion of 1.95E-5 1/K |
- |
| Max service temperature, long |
- |
Max service temperature, long of 0 - 1150 °C |
- |
| 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) |
- |
| - |
600.0 °C |
Specific heat capacity of 660 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 15 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 21 W/(m·K) |
- |
SEW 470 Grade X9CrNiSiNCe21-11-2 solution annealed (+AT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.05 - 0.12 % |
| Cerium |
Cerium of 0.03 - 0.08 % |
| Chromium |
Chromium of 20 - 22 % |
| Manganese |
Manganese of 1 % |
| Nickel |
Nickel of 10 - 12 % |
| Nitrogen |
Nitrogen of 0.12 - 0.2 % |
| Phosphorus |
Phosphorus of 0.05 % |
| Silicon |
Silicon of 1.4 - 2.5 % |
| Sulfur |
Sulfur of 0.015 % |
SEW 470 Grade X9CrNiSiNCe21-11-2 solution annealed (+AT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 8.5E-7 Ω·m |
SEW 470 Grade X9CrNiSiNCe21-11-2 solution annealed (+AT) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
23.0 °C |
Elastic modulus of 195 GPa |
Typical for Austenitic Stainless Steel |
| Elongation |
20.0 °C |
Elongation of 40 % |
- |
| Elongation A80 |
20.0 °C |
Elongation A80 of 37 % |
- |
| Hardness, Brinell |
20.0 °C |
Hardness, Brinell of 210 [-] |
- |
| 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 |
- |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 310 MPa |
- |
| Yield strength Rp1.0 |
20.0 °C |
Yield strength Rp1.0 of 350 MPa |
- |
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