EN 10270-3 Grade X7CrNiAl17-7 cold drawn
EN 10270-3 Grade X7CrNiAl17-7 cold drawn introduction
The stainless steel X7CrNiAl17-7 is usually used cold drawn as wire up to 10 mm diameter for springs or spring parts. It has a high fatigue strength and a raised high-temperature strength, but a reduced corrosion resistance and is applicable up to 300°C.
Equivalent material: IS X04Cr19Ni9, ASTM 631, UNS S17700, GB 07Cr17Ni7Al, GB S51770, ASTM A313Type631, DIN 1.4568, DIN X 7 CrNiAl 17 7, AFNOR Z9CNA17-07, AISI 631, AISI 631 (17-7PH), SAE 631, SAE 631 (17-7PH), JIS SUS631, JIS SUS631J1, JIS SUS631-CSP, EN 1.4568
EN 10270-3 Grade X7CrNiAl17-7 cold drawn general
| Property | Temperature | Value |
|---|---|---|
| Density | 20.0 °C | Density of 7.92 g/cm³ |
EN 10270-3 Grade X7CrNiAl17-7 cold drawn thermal
| Property | Temperature | Value |
|---|---|---|
| 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 1.67E-5 1/K |
| - | 200.0 °C | Coefficient of thermal expansion of 1.72E-5 1/K |
| - | 300.0 °C | Coefficient of thermal expansion of 1.77E-5 1/K |
| - | 400.0 °C | Coefficient of thermal expansion of 1.81E-5 1/K |
| - | 500.0 °C | Coefficient of thermal expansion of 1.84E-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 |
| Max service temperature, long | - | Max service temperature, long of -150 - 350 °C |
| Specific heat capacity | -100.0 °C | Specific heat capacity of 440 J/(kg·K) |
| - | 20.0 °C | Specific heat capacity of 472 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) |
| Thermal conductivity | -100.0 °C | Thermal conductivity of 11.7 W/(m·K) |
| - | 20.0 °C | Thermal conductivity of 14.5 W/(m·K) |
| - | 100.0 °C | Thermal conductivity of 16 W/(m·K) |
| - | 200.0 °C | Thermal conductivity of 17.6 W/(m·K) |
| - | 300.0 °C | Thermal conductivity of 19.1 W/(m·K) |
| - | 400.0 °C | Thermal conductivity of 20.4 W/(m·K) |
| - | 500.0 °C | Thermal conductivity of 21.9 W/(m·K) |
| - | 600.0 °C | Thermal conductivity of 23.3 W/(m·K) |
| - | 700.0 °C | Thermal conductivity of 24.7 W/(m·K) |
| - | 800.0 °C | Thermal conductivity of 26.1 W/(m·K) |
| Thermal diffusivity | -100.0 °C | Thermal diffusivity of 3.7 mm²/s |
| - | 20.0 °C | Thermal diffusivity of 3.9 mm²/s |
| - | 100.0 °C | Thermal diffusivity of 4.3 mm²/s |
| - | 200.0 °C | Thermal diffusivity of 4.3 mm²/s |
| - | 300.0 °C | Thermal diffusivity of 4.6 mm²/s |
| - | 400.0 °C | Thermal diffusivity of 4.7 mm²/s |
| - | 500.0 °C | Thermal diffusivity of 4.9 mm²/s |
| - | 600.0 °C | Thermal diffusivity of 5 mm²/s |
| - | 700.0 °C | Thermal diffusivity of 5.3 mm²/s |
| - | 800.0 °C | Thermal diffusivity of 5.7 mm²/s |
EN 10270-3 Grade X7CrNiAl17-7 cold drawn chemical
| Property | Value |
|---|---|
| Aluminium | Aluminium of 0.7 - 1.5 % |
| Carbon | Carbon of 0.09 % |
| Chromium | Chromium of 16 - 18 % |
| Manganese | Manganese of 1 % |
| Nickel | Nickel of 6.5 - 7.8 % |
| Phosphorus | Phosphorus of 0.04 % |
| Silicon | Silicon of 0.7 % |
| Sulfur | Sulfur of 0.015 % |
EN 10270-3 Grade X7CrNiAl17-7 cold drawn electrical
| Property | Temperature | Value |
|---|---|---|
| Electrical resistivity | -100.0 °C | Electrical resistivity of 5.86E-7 Ω·m |
| - | 20.0 °C | Electrical resistivity of 6.92E-7 Ω·m |
| - | 100.0 °C | Electrical resistivity of 7.58E-7 Ω·m |
| - | 200.0 °C | Electrical resistivity of 8.36E-7 Ω·m |
| - | 300.0 °C | Electrical resistivity of 9.07E-7 Ω·m |
| - | 400.0 °C | Electrical resistivity of 9.73E-7 Ω·m |
| - | 500.0 °C | Electrical resistivity of 1.02E-6 Ω·m |
| - | 600.0 °C | Electrical resistivity of 1.06E-6 Ω·m |
| - | 700.0 °C | Electrical resistivity of 1.1E-6 Ω·m |
| - | 800.0 °C | Electrical resistivity of 1.13E-6 Ω·m |
EN 10270-3 Grade X7CrNiAl17-7 cold drawn mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
| Elastic modulus | -100.0 °C | Elastic modulus of 206 GPa | - |
| - | 20.0 °C | Elastic modulus of 190 - 200 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 | - |
| - | 600.0 °C | Elastic modulus of 150 GPa | - |
| - | 700.0 °C | Elastic modulus of 142 GPa | - |
| - | 800.0 °C | Elastic modulus of 134 GPa | - |
| Poisson's ratio | 23.0 °C | Poisson's ratio of 0.3 [-] | Typical for Steel |
| Shear modulus | 20.0 °C | Shear modulus of 73 - 78 GPa | - |
| Tensile strength | 20.0 °C | Tensile strength of 1250 - 2280 MPa | - |
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Similar or equivalent steel materials
- EN 10272 Grade X5CrNi18-10 solution annealed (+AT)
- EN 10270-3 Grade X7CrNiAl17-7 precipitation hardened (+P)
- DIN 17224 Grade X7CrNiAl17-7 solution annealed (+AT)
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- ASTM A705 Grade 631 Age-Hardening RH950
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