DIN 1.4021 Stainless Steel (Material X20Cr13)
The following tables summarize DIN 1.4021 stainless steel properties and specifications, including chemical composition, mechanical properties, hardness, heat treatment, etc.
Chemical composition
The chemical composition of X20Cr13 material is listed in the following table based on casting analysis.
| Chemical composition, % | |||||||
| Standard | Steel grade (steel number) | W | Yes, ≤ | Mn, ≤ | P, ≤ | S, ≤ | Cr |
| EN 10088-2; EN 10088-3 |
X20Cr13 (1.4021) | 0.16-0.25 | 1.00 | 1.50 | 0.040 | 0.015 | 12.0-14.0 |
Notes: For 1.4021 stainless steel bars, rebars, wires, profiles, bright products and related semi-finished products, the S content is ≤0.030%. A specific range of sulfur content can provide specific performance improvements. For machinability, it is recommended and permitted to control the sulfur content between 0.015% and 0.030%. For weldability, it is recommended and permitted to control the sulfur content between 0.008% and 0.030%. To improve polishing performance, it is recommended to control the sulfur content to a maximum of 0.015%.
Physical properties
The physical properties of DIN EN 1.4021 stainless steel are listed in the table below, such as density, melting point, specific heat, electrical resistivity, modulus of elasticity (modulus of elasticity), thermal conductivity and coefficient of thermal expansion (CTE).
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 (lb/in3) | 7.7 (0.278) |
| Magnetic | Yes |
| Specific heat capacity, J/(Kg·K) | 460 to 20°C (68°F) |
| Electrical resistivity, μΩ·m | 0.60 to 20°C (68°F) |
| Modulus of elasticity, GPa (10 3 ksi) | 215 (31.2) at 20°C (68°F) |
| 212 (30.7) at 100°C (212°F) | |
| 205 (29.7) to 200 °C (392 °F) | |
| 200 (29) to 300°C (572°F) | |
| 190 (27.5) to 400 °C (752 °F) | |
| Thermal conductivity, (W/m·K) | 30 to 20°C (68°F) |
| Average coefficient of thermal expansion, (10 -6 /K) | 10.5 to 20-100°C (68-212°F) |
| 11.0 to 20-200°C (68-392°F) | |
| 11.5 to 20-300°C (68-572°F) | |
| 12.0 to 20-400°C (68-752°F) | |
DIN EN 1.4021 Mechanical Properties of Stainless Steel
The mechanical properties of DIN EN 1.4021 stainless steel are given in the data sheet below, including tensile strength, yield strength, elongation, area reduction, Brinell and Rockwell hardness, etc.
| Mechanical properties | |||||||||||
| Country (Region) | Standard | Steel grade (steel number) | Product condition | Heat treatment condition | Thickness (mm), ≤ | Hardness, HRB (HBW or HV) | 0.2% yield strength, Mpa (ksi), ≥ | Tensile strength, Mpa (ksi) | Elongation, %, ≥, (long. + tr.) | Impact energy (ISO-V), KV2 >10 mm thick, ≥ J | Rockwell hardness, HRC (HV) |
| European Union | EN 10088-2 | X20Cr13 (1.4021) | cold rolled strip | +QT | 3 | – | – | – | – | – | 44-50 (440-530) |
| cold rolled strip | +A | 8 | 95 (225) | – | 700 (101), ≤ | 15 | – | – | |||
| Hot rolled strip | +A | 13.5 | |||||||||
| Hot rolled board | +QT650 | 75 | – | 450 (65) | 650-850 (94-123) | 12 | by agreement | – | |||
| Hot rolled board | +QT750 | 550 (80) | 750-950 (108-137) | 10 | |||||||
| Grades: +A: annealed, +QT: Tempered and Tempered. |
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| Mechanical properties at room temperature of heat-treated 1.4021 steel under conditions 1C, 1E, 1D, 1X, 1G and 2D | ||||||||
| Standard | Steel grade (steel number) | Thickness | ||||||
