EN 10272 Grade X2CrNiN23-4 solution annealed (+AT)

EN 10272 Grade X2CrNiN23-4 solution annealed (+AT) introduction

The austenitic-ferritic steel grade X2CrNiN23-4 acc. to DIN EN 10272 : 2001-01is used for hot and cold formed rods for pressure vessels. The material is a stainless duplex-steel with high strength and hardness, very good resistance to general corrosion, pitting corrosion and particularly to stress corrosion. Furthermore it shows resistance to intercrystalline corrosion also in sensitized condition.

Equivalent material: AFNOR Z2CN23-4Az, ASTM 306, ASTM S32304, UNS S32304, GB 022Cr23Ni4MoCuN, GB S23043, ISO X2CrNiN23-4, ISO 4362-323-04-I, ISO DP27B, ASTM A276UNSS32304, DIN 1.4362, DIN X2CrNiN23-4, AFNOR Z2CN23-04AZ, SS 2327, AISI S32304, SAE S32304, EN 1.4362, ASTM 2304

EN 10272 Grade X2CrNiN23-4 solution annealed (+AT) general

Property Temperature Value
Density 20.0 °C Density of 7.8 g/cm³

EN 10272 Grade X2CrNiN23-4 solution annealed (+AT) thermal

Property Temperature Value Comment
Coefficient of thermal expansion 100.0 °C Coefficient of thermal expansion of 1.3E-5 - 1.33E-5 1/K -
- 200.0 °C Coefficient of thermal expansion of 1.35E-5 1/K -
- 300.0 °C Coefficient of thermal expansion of 1.4E-5 1/K -
Max service temperature - Max service temperature of 300 °C Typical for Duplex Stainless Steel
Melting point - Melting point of 1375 - 1450 °C Typical for Duplex Stainless Steel
Specific heat capacity 20.0 °C Specific heat capacity of 500 J/(kg·K) -
Thermal conductivity 20.0 °C Thermal conductivity of 13.4 - 15 W/(m·K) -
- 100.0 °C Thermal conductivity of 14.9 W/(m·K) -

EN 10272 Grade X2CrNiN23-4 solution annealed (+AT) chemical

Property Value
Carbon Carbon of 0.03 %
Chromium Chromium of 22 - 24 %
Copper Copper of 0.1 - 0.6 %
Manganese Manganese of 2 %
Molybdenum Molybdenum of 0.1 - 0.6 %
Nickel Nickel of 3.5 - 5.5 %
Nitrogen Nitrogen of 0.05 - 0.2 %
Phosphorus Phosphorus of 0.04 %
Silicon Silicon of 1 %
Sulfur Sulfur of 0.015 %

EN 10272 Grade X2CrNiN23-4 solution annealed (+AT) electrical

Property Temperature Value
Electrical resistivity 20.0 °C Electrical resistivity of 7.85E-7 - 8E-7 Ω·m
- 100.0 °C Electrical resistivity of 8.44E-7 Ω·m

EN 10272 Grade X2CrNiN23-4 solution annealed (+AT) mechanical

Property Temperature Value Comment
Elastic modulus 20.0 °C Elastic modulus of 200 - 212 GPa -
- 100.0 °C Elastic modulus of 194 - 206 GPa -
- 200.0 °C Elastic modulus of 186 GPa -
- 300.0 °C Elastic modulus of 180 GPa -
Elongation 20.0 °C Elongation of 25 % -
Hardness, Brinell 20.0 °C Hardness, Brinell of 260 [-] -
Poisson's ratio 23.0 °C Poisson's ratio of 0.3 [-] Typical for Duplex Stainless Steel
Shear modulus 23.0 °C Shear modulus of 77 GPa Typical for Duplex Stainless Steel
Tensile strength 20.0 °C Tensile strength of 600 - 830 MPa -
- 100.0 °C Tensile strength of 540 MPa -
- 150.0 °C Tensile strength of 520 MPa -
- 200.0 °C Tensile strength of 500 MPa -
- 250.0 °C Tensile strength of 490 MPa -
Yield strength Rp0.2 20.0 °C Yield strength Rp0.2 of 400 MPa -
- 100.0 °C Yield strength Rp0.2 of 330 MPa -
- 150.0 °C Yield strength Rp0.2 of 300 MPa -
- 200.0 °C Yield strength Rp0.2 of 280 MPa -
- 250.0 °C Yield strength Rp0.2 of 265 MPa -

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