EN 10028-5 P420ML1 Introduce
EN 10028-5 P420ML1 is the standard for hot rolled flat products made of steels for pressure purposes. This particular EN norm sets the requirements for flat products of non-alloy steels like P355M, P355ML1, P355ML2, and P420M. Heat treatments are used to improve the strength and toughness of the steel, such as normalizing, annealing, solution treatment, and tempering. The chemical composition of EN 10028-5 P420ML1 includes carbon, manganese, phosphorus, sulfur, chromium, nickel, and molybdenum. It is used in a variety of applications in the automotive, power and energy, marine, and fabrication industries.
Smelting temperature:1488°C - 1667°C
Application:Pressure flat steel products - Part 5: Weldable fine grain steel, thermomechanical rolling
EN 10028-5 P420ML1 Material Chemical Composition
The chemical composition of the EN 10028-5 P420ML1 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.1000 |
| Titanium (Ti) | - | 0.0500 |
| Silicon (Si) | - | 0.5000 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0200 |
| Nickel (Ni) | - | 0.5000 |
| (Nb+Ti+V) | - | 0.1500 |
| Niobium (Nb) | - | 0.0500 |
| Nitrogen (N) | - | 0.0200 |
| Molybdenum (Mo) | - | 0.2000 |
| Manganese (Mn) | - | 1.7000 |
| (Cr+Cu+Mo) | - | 0.6000 |
| (CEV) | - | 0.4300 |
| Carbon (C) | - | 0.1600 |
| Aluminum (Al) | 0.0200 | - |
EN 10028-5 P420ML1 Material Mechanical Properties
EN 10028-5 P420ML1 is a type of steel that is strong and durable, making it ideal for a variety of applications. Its improved tensile and yield strength make it an excellent choice in applications where strength and durability are paramount. Its impact resistance ensures it can withstand shock and sudden forces, while its weldability means it can be used in a variety of welding applications. Finally, its corrosion resistance makes it perfect for applications where corrosion resistance is a priority.
The mechanical properties of the EN 10028-5 P420ML1 steel are as follows:
| YieldRp0.2 | ≤ 461 (MPa) |
| TeileRm | ≤ 938 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 242 |
EN 10028-5 P420ML1 Material Thermal Properties
The thermal performance parameters of the EN 10028-5 P420ML1 steel are as follows:
| Temperature (°C) | 13 | 319 | 726 |
| Modulus of elasticity (GPa) | - | 176 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 12 |
| Thermal conductivity (W/m·°C) | - | 33.3 | 42.2 |
| Specific thermal capacity (J/kg·°C) | - | 113 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.34 | - | - |
| Deity (kg/dm³) | - | - | 412 |
| Poisson’s coefficient, ν | - | - | 223 |
EN 10028-5 P420ML1 Material Machining Technology
EN 10028-5 P420ML1 steel is a ferritic steel that is suitable for precision machining applications. It is a good choice due to its relatively high corrosion resistance, ductility, and hardness. It is important to use the correct tooling and setup to effectively machine the steel and get the highest precision and quality. By keeping these factors in mind, EN 10028-5 P420ML1 steel can be machined efficiently and cost-effectively.