EN 10216-5 Grade X1NiCrMoCuN25-20-7 solution annealed (+AT)
EN 10216-5 Grade X1NiCrMoCuN25-20-7 solution annealed (+AT) introduction
Steel X1NiCrMoCuN25-20-7 (acc. to VdT_V-material specification 502 : 2001-06: X 1 NiCrMoCuN 25 20 6 ), material number 1.4529, is used acc. to VdT_V-Wbl 502 : 2001-06 for pressure vessels as per TRB 100 and AD-data sheet W 2 from -10 (and AD-data sheet W 10 for the form of manufacture sheet and Krupp-VDM-sectional and bar steel/forged parts from -196 deg.) to 400 deg. as well as in nuclear power engineering as far as nuclear rules or object-related specifications permit application for pressure vessels.
The weldability is given for the metal-arc welding and gas-shielded welding. Preheating is not necessary. The intermediate layer temperature should not exceed 120 deg. Heat treatment (solution annealing and quenching) after the welding only in special cases necessary (special corrosion stress).
As filler materials following metals are recommended: e.g. 2.4621 (EL-NiCr21Mo9Nb), 2.4831 (SG-NiCr21Mo9Nb), 2.4607 (SG-NiCr23Mo16 and 2.4611 (SG-NiMo16Cr16Ti). The two last-mentioned should preferred because of their corrosion properties.
The material is cold and hot formable.
To the material acc. to DIN EN 10216-5 : 2004-11 applies: X1NiCrMoCuN25-20-7 is the stronger Mo-alloyed variant of 1.4539. The steel shows a very high resistance to crevice corrosion, pitting corrosion as well as to stress corrosion caused by pitting corrosion. It has the highest steel pitting index. The material is resistant to intercrystalline corrosion, also in welded condition. Application in higher chloride contaminated media, such as in sulphuric and phosphoric acid as well as in offshore facilities. The steel is cold and warm formable. After cold forming at deformation degrees > 15 % as well as after warm forming has to be carried out a heat treatment (solution annealing at 1100 to 1180, quenching in water).
Equivalent material: UNS N08925, UNS N08926, ASTM N08925, ASTM N08926, ASME N08926, ASTM A213UNSN08926, DIN X1NiCrMoCuN25-20-6, DIN 1.4529, DIN X1NiCrMoCuN25-20-7, AFNOR Z2NCDU25-20-06Az, BS X1NiCrMoCuN25-20-7, AISI 926, AISI N08926, AISI N08367, SAE 926, SAE N08926, SAE N08367, EN 1.4529, ISO X1NiCrMoCuN25-20-7, ISO 4529-089-26-I, ISO AN52A, UNS N08367
EN 10216-5 Grade X1NiCrMoCuN25-20-7 solution annealed (+AT) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.76 - 8.1 g/cm³ |
EN 10216-5 Grade X1NiCrMoCuN25-20-7 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 1.58E-5 - 1.67E-5 1/K |
- |
| - |
200.0 °C |
Coefficient of thermal expansion of 1.61E-5 - 1.72E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.65E-5 - 1.77E-5 1/K |
- |
| - |
400.0 °C |
Coefficient of thermal expansion of 1.69E-5 - 1.81E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.73E-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 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 11.9 - 12 W/(m·K) |
- |
| - |
100.0 °C |
Thermal conductivity of 13.3 W/(m·K) |
- |
| - |
200.0 °C |
Thermal conductivity of 15.1 W/(m·K) |
- |
| - |
300.0 °C |
Thermal conductivity of 16.7 W/(m·K) |
- |
| - |
400.0 °C |
Thermal conductivity of 18.3 W/(m·K) |
- |
| - |
500.0 °C |
Thermal conductivity of 19.8 W/(m·K) |
- |
| - |
600.0 °C |
Thermal conductivity of 21.3 W/(m·K) |
- |
| - |
700.0 °C |
Thermal conductivity of 22.8 W/(m·K) |
- |
| - |
800.0 °C |
Thermal conductivity of 24.3 W/(m·K) |
- |
| - |
900.0 °C |
Thermal conductivity of 25.7 W/(m·K) |
- |
| - |
1000.0 °C |
Thermal conductivity of 27.1 W/(m·K) |
- |
| Thermal diffusivity |
20.0 °C |
Thermal diffusivity of 3.3 mm²/s |
- |
| - |
100.0 °C |
Thermal diffusivity of 3.4 mm²/s |
- |
| - |
200.0 °C |
Thermal diffusivity of 3.7 mm²/s |
- |
| - |
300.0 °C |
Thermal diffusivity of 4.1 mm²/s |
- |
| - |
400.0 °C |
Thermal diffusivity of 4.3 mm²/s |
- |
| - |
500.0 °C |
Thermal diffusivity of 4.5 mm²/s |
- |
| - |
600.0 °C |
Thermal diffusivity of 4.7 mm²/s |
- |
| - |
700.0 °C |
Thermal diffusivity of 5 mm²/s |
- |
| - |
800.0 °C |
Thermal diffusivity of 5.4 mm²/s |
- |
| - |
900.0 °C |
Thermal diffusivity of 5.7 mm²/s |
- |
| - |
1000.0 °C |
Thermal diffusivity of 5.8 mm²/s |
- |
EN 10216-5 Grade X1NiCrMoCuN25-20-7 solution annealed (+AT) chemical
| Property |
Value |
| Carbon |
Carbon of 0.02 % |
| Chromium |
Chromium of 19 - 21 % |
| Copper |
Copper of 0.5 - 1.5 % |
| Manganese |
Manganese of 1 % |
| Molybdenum |
Molybdenum of 6 - 7 % |
| Nickel |
Nickel of 24 - 26 % |
| Nitrogen |
Nitrogen of 0.15 - 0.25 % |
| Phosphorus |
Phosphorus of 0.03 % |
| Silicon |
Silicon of 0.5 % |
| Sulfur |
Sulfur of 0.01 % |
EN 10216-5 Grade X1NiCrMoCuN25-20-7 solution annealed (+AT) electrical
| Property |
Temperature |
Value |
| Electrical resistivity |
20.0 °C |
Electrical resistivity of 9.59E-7 - 1E-6 Ω·m |
| - |
100.0 °C |
Electrical resistivity of 1.01E-6 Ω·m |
| - |
200.0 °C |
Electrical resistivity of 1.05E-6 Ω·m |
| - |
300.0 °C |
Electrical resistivity of 1.1E-6 Ω·m |
| - |
400.0 °C |
Electrical resistivity of 1.13E-6 Ω·m |
| - |
500.0 °C |
Electrical resistivity of 1.17E-6 Ω·m |
| - |
600.0 °C |
Electrical resistivity of 1.19E-6 Ω·m |
| - |
700.0 °C |
Electrical resistivity of 1.22E-6 Ω·m |
| - |
800.0 °C |
Electrical resistivity of 1.24E-6 Ω·m |
| - |
900.0 °C |
Electrical resistivity of 1.26E-6 Ω·m |
| - |
1000.0 °C |
Electrical resistivity of 1.28E-6 Ω·m |
EN 10216-5 Grade X1NiCrMoCuN25-20-7 solution annealed (+AT) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
-100.0 °C |
Elastic modulus of 206 GPa |
- |
| - |
20.0 °C |
Elastic modulus of 195 - 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 |
- |
| - |
900.0 °C |
Elastic modulus of 127 GPa |
- |
| - |
1000.0 °C |
Elastic modulus of 120 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 35 % |
- |
| Elongation, transverse |
20.0 °C |
Elongation, transverse of 30 % |
- |
| 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 600 - 800 MPa |
- |
| Tensile strength, transverse |
20.0 °C |
Tensile strength, transverse of 600 - 800 MPa |
- |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 270 MPa |
- |
| - |
50.0 °C |
Yield strength Rp0.2 of 254 MPa |
- |
| - |
100.0 °C |
Yield strength Rp0.2 of 230 MPa |
- |
| - |
150.0 °C |
Yield strength Rp0.2 of 210 MPa |
- |
| - |
200.0 °C |
Yield strength Rp0.2 of 190 MPa |
- |
| - |
250.0 °C |
Yield strength Rp0.2 of 180 MPa |
- |
| - |
300.0 °C |
Yield strength Rp0.2 of 170 MPa |
- |
| - |
350.0 °C |
Yield strength Rp0.2 of 165 MPa |
- |
| - |
400.0 °C |
Yield strength Rp0.2 of 160 MPa |
- |
| Yield strength Rp0.2, transverse |
20.0 °C |
Yield strength Rp0.2, transverse of 270 MPa |
- |
| Yield strength Rp1.0 |
20.0 °C |
Yield strength Rp1.0 of 310 MPa |
- |
| - |
50.0 °C |
Yield strength Rp1.0 of 296 MPa |
- |
| - |
100.0 °C |
Yield strength Rp1.0 of 270 MPa |
- |
| - |
150.0 °C |
Yield strength Rp1.0 of 245 MPa |
- |
| - |
200.0 °C |
Yield strength Rp1.0 of 225 MPa |
- |
| - |
250.0 °C |
Yield strength Rp1.0 of 215 MPa |
- |
| - |
300.0 °C |
Yield strength Rp1.0 of 205 MPa |
- |
| - |
350.0 °C |
Yield strength Rp1.0 of 195 MPa |
- |
| - |
400.0 °C |
Yield strength Rp1.0 of 190 MPa |
- |
| Yield strength Rp1.0, transverse |
20.0 °C |
Yield strength Rp1.0, transverse of 310 MPa |
- |
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