DIN 17224 Grade X7CrNiAl17-7 solution annealed (+AT)
DIN 17224 Grade X7CrNiAl17-7 solution annealed (+AT) introduction
The stainless steel X7CrNiAl17-7 is usually used cold strained as wire up to 10 mm diameter or strip up to 1,6 mm thickness for springs or spring parts, also under corrosion stress and little raised temperatures.
Equivalent material: AFNOR Z8CNA17-07, BS 301S81, JIS SUS631, SS 2388, DIN X7CrNiAl17-7, DIN 1.4568, AFNOR Z9CNA17-07, AISI 631, AISI 631 (17-7PH), SAE 631, SAE 631 (17-7PH), JIS SUS631J1, JIS SUS631-CSP, EN X7CrNiAl17-7, EN 1.4568, UNS S17700
DIN 17224 Grade X7CrNiAl17-7 solution annealed (+AT) general
| Property | Temperature | Value |
|---|---|---|
| Density | 20.0 °C | Density of 7.92 g/cm³ |
DIN 17224 Grade X7CrNiAl17-7 solution annealed (+AT) 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 |
DIN 17224 Grade X7CrNiAl17-7 solution annealed (+AT) chemical
| Property | Value |
|---|---|
| Aluminium | Aluminium of 0.75 - 1.5 % |
| Carbon | Carbon of 0.09 % |
| Chromium | Chromium of 16 - 18 % |
| Manganese | Manganese of 1 % |
| Nickel | Nickel of 6.5 - 7.75 % |
| Phosphorus | Phosphorus of 0.05 % |
| Silicon | Silicon of 1 % |
| Sulfur | Sulfur of 0.03 % |
DIN 17224 Grade X7CrNiAl17-7 solution annealed (+AT) 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 |
DIN 17224 Grade X7CrNiAl17-7 solution annealed (+AT) mechanical
| Property | Temperature | Value |
|---|---|---|
| Elastic modulus | -100.0 °C | Elastic modulus of 206 GPa |
| - | 20.0 °C | Elastic modulus of 196 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 | 20.0 °C | Poisson's ratio of 0.28 [-] |
| Reduction of area | 20.0 °C | Reduction of area of 40 % |
| Tensile strength | 20.0 °C | Tensile strength of 800 - 1000 MPa |
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Similar or equivalent steel materials
- EN 10270-3 Grade X7CrNiAl17-7 precipitation hardened (+P)
- EN 10270-3 Grade X7CrNiAl17-7 cold drawn
- EN 10088-1 Grade X7CrNiAl17-7 solution annealed (+AT)
- UNS S17700 Hardened
- UNS S17700 Annealed
- UNS S17700 Solution Treated
- ASTM A705 Grade 631 Age-Hardening RH950
- ASTM A705 Grade 631 Age-Hardening TH1050
- ASTM A693 Grade 631 Precipitation hardened at 760 °C + 15 °C + 566 °C
- ASTM A693 Grade 631 Solution-Treated
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