EN 10222-5 Grade X6CrNiTiB18-10 solution annealed (+AT)

EN 10222-5 Grade X6CrNiTiB18-10 solution annealed (+AT) introduction

Steel X6CrNiTiB18-10 (1.4941) is a high temperature steel for application in pressure vessel and steam boiler construction as well as in nuclear power plant construction.

Equivalent material: IS X04Cr18Ni10Ti, JIS SUSF321, KS STSF321, ASTM A965 Grade F321, UNS S32100, ASTM Grade F321, ASTM F321, DIN X8CrNiTi18-10, DIN 1.4941, DIN X6CrNiTiB18-10, DIN X7CrNiTiB18-10, AFNOR Z6CNT18-10, AISI 321H, SAE 321H, EN X7CrNiTiB18-10, EN 1.4941, UNS S32109

EN 10222-5 Grade X6CrNiTiB18-10 solution annealed (+AT) general

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

EN 10222-5 Grade X6CrNiTiB18-10 solution annealed (+AT) 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 -
- 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 450 - 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) -
- 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 - 17 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 -

EN 10222-5 Grade X6CrNiTiB18-10 solution annealed (+AT) chemical

Property Value
Boron Boron of 1.5E-3 - 5E-3 %
Carbon Carbon of 0.04 - 0.08 %
Chromium Chromium of 17 - 19 %
Manganese Manganese of 2 %
Nickel Nickel of 9 - 12 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 1 %
Sulfur Sulfur of 0.015 %
Titanium Titanium of 0.8 %

EN 10222-5 Grade X6CrNiTiB18-10 solution annealed (+AT) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 7.1E-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

EN 10222-5 Grade X6CrNiTiB18-10 solution annealed (+AT) mechanical

Property Temperature Value Comment
Elastic modulus -100.0 °C Elastic modulus of 206 GPa -
- 20.0 °C Elastic modulus of 196 - 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 -
- 900.0 °C Elastic modulus of 127 GPa -
- 1000.0 °C Elastic modulus of 120 GPa -
Elongation 20.0 °C Elongation of 30 - 40 % -
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 490 - 690 MPa -
Yield strength Rp0.2 20.0 °C Yield strength Rp0.2 of 175 MPa -
Yield strength Rp1.0 20.0 °C Yield strength Rp1.0 of 210 MPa -

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