DIN 17440 Grade X4CrNi18-12 heat treated

DIN 17440 Grade X4CrNi18-12 heat treated

DIN 17440 Grade X4CrNi18-12 heat treated introduction

According DIN 17440 : 1996-09 the steel X4CrNi18-12, mat. no. 1.4303, is used for wire and is resistant to intercrystalline corrosion in the delivery condition (for thicknesses up to 6 mm and diameter up to 40 mm) and in the welded condition (possible limited by the chemical composition and the welding condition. Acc. DIN 17400 : 1985-07 (X 5 CrNi 18 12) and DIN EN 10088-1,-2,-3 : 1995-08 (X4CrNi18-12) application in the chemical industry as well as for the production of screws, nuts and cold extrudings. The steel is, like the grade X5CrNi18-10 (1.4301), high resistant to corrosion and resistant up to an ph-value of 4.5 to weak chlorides. In the civil engineering the X4CrNi18-12 is used for joining elements. Standard parts like screws, nuts and threads are made by non-cutting processing.

Equivalent material: GOST 06Ch18N11, ISO 13, JIS SUS305, ÖNORM X5CrNi18-12KKW, UNE F.3513-X8CrNi18-12, ASTM 305, AFNOR Z4CN18-12, BS 305S19, UNI X8CrNi19-10, UNE F.3513, UNE X8CrNi18-12, DIN 1.4303, DIN X5CrNi18-12, AFNOR Z1CN18-12, AFNOR Z5CN18-11FF, BS 305S17, AISI 305, AISI 308, SAE 305, SAE 308, JIS SUS305J1, JIS SUSY308, EN X4CrNi18-12, EN 1.4303, GOST 06X18H11, GB 1Cr18Ni12, ASTM ER308, UNS S30500, UNS S30880

DIN 17440 Grade X4CrNi18-12 heat treated general

Property Temperature Value
Density 20.0 °C Density of 7.9 - 7.93 g/cm³

DIN 17440 Grade X4CrNi18-12 heat treated 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 1.6E-5 - 1.67E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.7E-5 - 1.72E-5 1/K -
- 300.0 °C Coefficient of thermal expansion of 1.7E-5 - 1.77E-5 1/K -
- 400.0 °C Coefficient of thermal expansion of 1.8E-5 - 1.81E-5 1/K -
- 500.0 °C Coefficient of thermal expansion of 1.8E-5 - 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 -
- 900.0 °C Coefficient of thermal expansion of 1.97E-5 1/K -
- 1000.0 °C Coefficient of thermal expansion of 2E-5 1/K -
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 - 500 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) -
- 900.0 °C Specific heat capacity of 565 J/(kg·K) -
- 1000.0 °C Specific heat capacity of 571 J/(kg·K) -
Thermal conductivity 20.0 °C Thermal conductivity of 14.3 - 15 W/(m·K) -
- 100.0 °C Thermal conductivity of 15.8 W/(m·K) -
- 200.0 °C Thermal conductivity of 17.5 W/(m·K) -
- 300.0 °C Thermal conductivity of 19 W/(m·K) -
- 400.0 °C Thermal conductivity of 20.5 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 24.6 W/(m·K) -
- 800.0 °C Thermal conductivity of 26 W/(m·K) -
- 900.0 °C Thermal conductivity of 27.4 W/(m·K) -
- 1000.0 °C Thermal conductivity of 28.8 W/(m·K) -
Thermal diffusivity 20.0 °C Thermal diffusivity of 3.8 mm²/s -
- 100.0 °C Thermal diffusivity of 4 mm²/s -
- 200.0 °C Thermal diffusivity of 4.2 mm²/s -
- 300.0 °C Thermal diffusivity of 4.6 mm²/s -
- 400.0 °C Thermal diffusivity of 4.8 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 5.6 mm²/s -
- 900.0 °C Thermal diffusivity of 5.9 mm²/s -
- 1000.0 °C Thermal diffusivity of 6 mm²/s -

DIN 17440 Grade X4CrNi18-12 heat treated chemical

Property Value
Carbon Carbon of 0.06 %
Chromium Chromium of 17 - 19 %
Manganese Manganese of 2 %
Nickel Nickel of 11 - 13 %
Nitrogen Nitrogen of 0.11 %
Phosphorus Phosphorus of 0.05 %
Silicon Silicon of 1 %
Sulfur Sulfur of 0.015 - 0.03 %

DIN 17440 Grade X4CrNi18-12 heat treated electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 7.1E-7 - 7.3E-7 Ω·m
- 100.0 °C Electrical resistivity of 7.76E-7 Ω·m
- 200.0 °C Electrical resistivity of 8.49E-7 Ω·m
- 300.0 °C Electrical resistivity of 9.14E-7 Ω·m
- 400.0 °C Electrical resistivity of 9.71E-7 Ω·m
- 500.0 °C Electrical resistivity of 1.02E-6 Ω·m
- 600.0 °C Electrical resistivity of 1.07E-6 Ω·m
- 700.0 °C Electrical resistivity of 1.1E-6 Ω·m
- 800.0 °C Electrical resistivity of 1.14E-6 Ω·m
- 900.0 °C Electrical resistivity of 1.17E-6 Ω·m
- 1000.0 °C Electrical resistivity of 1.19E-6 Ω·m

DIN 17440 Grade X4CrNi18-12 heat treated mechanical

Property Temperature Value
Elastic modulus -100.0 °C Elastic modulus of 206 GPa
- 20.0 °C Elastic modulus of 196 - 202.24 GPa
- 100.0 °C Elastic modulus of 190 - 194.36 GPa
- 200.0 °C Elastic modulus of 182 - 186 GPa
- 300.0 °C Elastic modulus of 174 - 179 GPa
- 400.0 °C Elastic modulus of 166 - 172 GPa
- 500.0 °C Elastic modulus of 157.59 - 165 GPa
- 600.0 °C Elastic modulus of 149.24 - 150 GPa
- 700.0 °C Elastic modulus of 142 GPa
- 800.0 °C Elastic modulus of 134 GPa
- 900.0 °C Elastic modulus of 127 GPa
- 1000.0 °C Elastic modulus of 120 GPa
Poisson's ratio 20.0 °C Poisson's ratio of 0.29 [-]
- 100.0 °C Poisson's ratio of 0.29 [-]
- 200.0 °C Poisson's ratio of 0.3 [-]
- 300.0 °C Poisson's ratio of 0.3 [-]
- 400.0 °C Poisson's ratio of 0.31 [-]
- 500.0 °C Poisson's ratio of 0.32 [-]
- 600.0 °C Poisson's ratio of 0.33 [-]
Shear modulus 20.0 °C Shear modulus of 78.33 GPa
- 100.0 °C Shear modulus of 75.08 GPa
- 200.0 °C Shear modulus of 71.07 GPa
- 300.0 °C Shear modulus of 67.21 GPa
- 400.0 °C Shear modulus of 63.34 GPa
- 500.0 °C Shear modulus of 59.64 GPa
- 600.0 °C Shear modulus of 56.08 GPa
Tensile strength 20.0 °C Tensile strength of 800 - 900 MPa

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