EN 10222-5 Grade X7CrNiNb18-10 solution annealed (+AT)

EN 10222-5 Grade X7CrNiNb18-10 solution annealed (+AT) introduction

The corrosion resistant material X7CrNiNb18-10, material number 1.4912 is predominantly used for pressure vessel construction.

Equivalent material: GB 07Cr18Ni11Nb, GB S34779, IS 7Cr18Ni11NbH, ASTM A182 Grade F347H, ASTM A965 Grade F347H, ASME SA-182 Grade F347H, UNS S34709, ISO X7CrNiNb18-10, AISI Grade F347H, AISI F347H, DIN 1.4912, AISI 347H, SAE 347H, JIS SUS347H, JIS SUS347HTP, JIS SUS347HTB, JIS SUS347HTF, EN 1.4912, ASTM Grade F347H

EN 10222-5 Grade X7CrNiNb18-10 solution annealed (+AT) general

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

EN 10222-5 Grade X7CrNiNb18-10 solution annealed (+AT) thermal

Property Temperature Value Comment
Coefficient of thermal expansion 100.0 °C Coefficient of thermal expansion of 1.6E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.65E-5 1/K -
- 300.0 °C Coefficient of thermal expansion of 1.7E-5 1/K -
- 400.0 °C Coefficient of thermal expansion of 1.75E-5 1/K -
- 500.0 °C Coefficient of thermal expansion of 1.8E-5 1/K -
- 600.0 °C Coefficient of thermal expansion of 1.85E-5 1/K -
Melting point - Melting point of 1230 - 1480 °C Typical for Austenitic Stainless Steel
Specific heat capacity 20.0 °C Specific heat capacity of 500 J/(kg·K) -
Thermal conductivity 20.0 °C Thermal conductivity of 15 W/(m·K) -

EN 10222-5 Grade X7CrNiNb18-10 solution annealed (+AT) chemical

Property Value
Carbon Carbon of 0.04 - 0.1 %
Chromium Chromium of 17 - 19 %
Manganese Manganese of 2 %
Nickel Nickel of 9 - 12 %
Niobium Niobium of 1.2 %
Phosphorus Phosphorus of 0.05 %
Silicon Silicon of 1 %
Sulfur Sulfur of 0.015 %

EN 10222-5 Grade X7CrNiNb18-10 solution annealed (+AT) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 7.3E-7 Ω·m

EN 10222-5 Grade X7CrNiNb18-10 solution annealed (+AT) mechanical

Property Temperature Value Comment
Elastic modulus 20.0 °C Elastic modulus of 200 GPa -
- 100.0 °C Elastic modulus of 194 GPa -
- 200.0 °C Elastic modulus of 186 GPa -
- 300.0 °C Elastic modulus of 179 GPa -
- 400.0 °C Elastic modulus of 172 GPa -
- 500.0 °C Elastic modulus of 165 GPa -
- 600.0 °C Elastic modulus of 155 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 510 - 710 MPa -
Yield strength Rp0.2 20.0 °C Yield strength Rp0.2 of 205 MPa -
Yield strength Rp1.0 20.0 °C Yield strength Rp1.0 of 240 MPa -

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