DIN 17224 Grade X12CrNi17-7 spring hard

DIN 17224 Grade X12CrNi17-7 spring hard

DIN 17224 Grade X12CrNi17-7 spring hard introduction

The stainless steel X12CrNi17-7 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: DIN X10CrNi18-8, DIN 1.4310, DIN X12CrNi-17-7, DIN O, DIN 14, DIN X12CrNi17-7, AFNOR X10CrNi18-8, AFNOR Z12CN17-07, BS 301S21, BS X10CrNi18-8, UNI X2CrNi1807, SS 2331, UNE F.3517, AISI 301, AISI S30100, AISI 30301, SAE 301, SAE S30100, SAE 30301, JIS SUS301, JIS SUS302, EN X10CrNi18-8, EN 1.4310, ISO X10CrNi18-8, GOST 12Ch18N9, GB 1Cr17Ni7, ASTM S30151, ASTM 30302, UNS S30200, UNS S30100, UNS S30151, IS X07Cr18Ni9

DIN 17224 Grade X12CrNi17-7 spring hard general

Property Temperature Value
Density 20.0 °C Density of 7.92 g/cm³

DIN 17224 Grade X12CrNi17-7 spring hard 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 1.67E-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 -100 - 270 °C -
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 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 X12CrNi17-7 spring hard chemical

Property Value
Carbon Carbon of 0.12 %
Chromium Chromium of 16 - 18 %
Manganese Manganese of 2 %
Molybdenum Molybdenum of 0.8 %
Nickel Nickel of 6 - 9 %
Phosphorus Phosphorus of 0.05 %
Silicon Silicon of 1.5 %
Sulfur Sulfur of 0.03 %

DIN 17224 Grade X12CrNi17-7 spring hard 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 X12CrNi17-7 spring hard mechanical

Property Temperature Value Comment
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 % -
Shear modulus 23.0 °C Shear modulus of 77 GPa Typical for Austenitic Stainless Steel
Tensile strength 20.0 °C Tensile strength of 1250 - 2450 MPa -

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