P420ML1 High Quality Steel Plate For Boiler
P420ML1 pressure vessel steel plate is a weldable fine grain steel, thermomechanically rolled. It is commonly used in the manufacture of boilers and pressure vessels and equipment, and other deviations based on dimensional deviations. P420ML1 boiler steel plate is commonly used for pressure equipment. P420ML1 alloy steel plate is a steel material for boilers and pressure vessels.
P420ML1 boiler plate chemical composition
| Grade | The Element Max (%) | ||||||
| C | Si | Mn | P | S | Al | N | |
| P420ML1 | 0,16 | 0,50 | 1,70 | 0,020 | 0,015 | 0,020 | 0,020 |
| Nb | V | Ti | Ni | Mo | |||
| 0,05 | 0,10 | 0,05 | 0,50 | 0,20 | |||
P420ML1 vessel plate mechanical property
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 854 (≥) | 782 (≥) | 13 | 43 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 442 |
P420ML1 vessel steel plate physical properties
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 32 | - | - | 0.42 | - | |||
| 927 | 924 | - | 31.3 | 344 | - | ||
| 549 | - | 44 | 32.2 | 211 | 433 |
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