DIN EN 1.4401 Material X5CrNiMo17-12-2 Stainless Steel
The material DIN EN 1.4401 (X5CrNiMo17-12-2) is an austenitic stainless steel containing molybdenum. Due to the chemical composition of molybdenum, its corrosion resistance is greater than 1.4301 (X5CrNi18-10), especially in environments containing chlorides and non-oxidizing acids. 1.4404 (X2CrNiMo17-12-2) is an ultra-low carbon version of 1.4401 stainless steel, which has better corrosion resistance in welded structures.
Datasheet and specifications
The following tables and lists provide the technical data sheet of 1.4401 stainless steel, including chemical composition, physical and mechanical properties, heat treatment, welding, etc.
Chemical composition
The chemical composition of the DIN EN 1.4401 material is listed in the following table based on casting analysis.
| Chemical composition, % | ||||||||||
| Steel grade (steel number) | Standard | C, ≤ | Yes, ≤ | Mn, ≤ | P, ≤ | S, ≤ | Cr | No | Mo | N, ≤ |
| X5CrNiMo17-12-2 (1.4401) | EN 10088-2; EN 10088-3 | 0.07 | 1.00 | 2.00 | 0.045 | 0.030 | 16.5-18.5 | 10.0-13.0 | 2.00-2.50 | 0.10 |
Physical properties
The physical properties of DIN 1.4401 material are given in the following lists, including density, thermal expansion, modulus of elasticity, thermal conductivity, specific heat capacity and electrical resistance.
Grades:
- 10 -6 ·K -1 = 10 -6 /K
- 1Ω mm²/m = 1 μΩ m
- 1 g/cm3 = 1 kg/dm3 = 1000 kg/m3
- 1 GPa = 1kN/mm2
- 1 MPa = 1 N/mm2
| Physical properties | |
| Density, g/cm3 | 8.0 |
| Magnetic | No |
| Electrical resistivity, μΩ·m | 0.75 (20℃) |
| Specific heat capacity, J/(kg·K) | 500 (20℃) |
| Thermal conductivity, (W/m·K) | 15.0 (20℃) |
| Modulus of elasticity, Gpa | 200 (20℃) |
| 194 (100℃) | |
| 186 (200℃) | |
| 179 (300℃) | |
| 172 (400℃) | |
| 165 (500℃) | |
| Average coefficient of thermal expansion, (10 -6 /K) | 16.0 (20-100℃) |
| 16.5 (20-200℃) | |
| 17.0 (20-300℃) | |
| 17.5 (20-400℃) | |
| 18.0 (20-500℃) | |
Mechanical properties
Mechanical properties of material 1.4401 stainless steel at room temperature in solution annealed condition and resistance to intergranular corrosion.
| Mechanical properties (solution annealed) | |||||||||||||
| Country (Region) | Standard | Steel grade (steel number) | Diameter (d) or Thickness | ||||||||||
