18MnMo4-5 steel plate is a European standard steel plate for pressure vessels. Some alloying elements such as manganese and molybdenum are added to the steel plate to give it better mechanical properties and corrosion resistance. It is widely used in the oil and gas industry, energy industry, automobile industry and other fields.
18MnMo4-5 steel plate implementation standard: EN10028-2. This European standard specifies the requirements for non-alloy steel and alloy steel flat products that can be welded with specified high-temperature properties for pressure vessels.
Chemical composition % of steel 18MnMo4-5 (1.5414):
| C | Si | Mn | Ni | P | S | Cr | Mo | N | Cu |
| max 0.2 | max 0.4 | 0.9 - 1.5 | max 0.3 | max 0.015 | max 0.005 | max 0.3 | 0.45 - 0.6 | max 0.012 | max 0.3 |
Mechanical properties of steel 18MnMo4-5 (1.5414)
| Nominal thickness (mm): | to 150 | 150 - 250 |
| Rm - Tensile strength (MPa) | 510-650 | 480-620 |
| Nominal thickness (mm): | to 60 | 60 - 150 | 150 - 250 |
| ReH - Minimum yield strength (MPa) | 345 | 325 | 310 |
| KV - Impact energy (J) transverse, (+NT) | -20° 27 |
0° 34 |
+20° 40 |
| A - Min. elongation at fracture (%) | 20 |
