EN 10028-6 P355QH Introduce
EN 10028-6 steel standard is a European standard which recognizes hot-rolled flat steel products for pressure vessel applications. Steel products in this family include a variety of plate products that are designated as either normalised rolled, thermomechanically rolled, thermomechanical control processed (TMCP) or fine grain steels. The purpose of EN 10028-6 and other European standards is to ensure a consistent product quality, while also providing adequate information that product purchasers may use to make informed decisions.
Smelting temperature:1513°C - 1351°C
Application:Pressure flat steel products - Part 6: Weldable fine grain steel, quenched and tempered
EN 10028-6 P355QH Material Chemical Composition
The chemical composition of the EN 10028-6 P355QH steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nitrogen (N) | - | 0.0150 |
| Copper (Cu) | - | 0.3000 |
| Boron (B) | - | 0.0050 |
| Titanium (Ti) | - | 0.0300 |
| Niobium (Nb) | - | 0.0500 |
| Vanadium (V) | - | 0.0600 |
| Molybdenum (Mo) | - | 0.2500 |
| Nickel (Ni) | - | 0.5000 |
| Chromium (Cr) | - | 0.3000 |
| PhOsphorus (P) | - | 0.0250 |
| Sulfur (S) | - | 0.0150 |
| Manganese (Mn) | - | 1.5000 |
| Silicon (Si) | - | 0.4000 |
| Carbon (C) | - | 0.1600 |
| PhOsphorus (P) | - | 0.0200 |
| Sulfur (S) | - | 0.0100 |
| Zirconium (Zr) | - | 0.0500 |
| Copper (Cu) | - | 0.3000 |
EN 10028-6 P355QH Material Mechanical Properties
EN 10028-6 P355QH steel has excellent mechanical properties, making it a suitable choice for many different applications. It is a very strong material, with a yield strength of up to 550 MPa and a tensile strength of 700MPa. It also has a high hardness rating of up to HRC 30 on the Rockwell C scale. This improves the wear resistance of the alloy, making it an ideal choice for components which must withstand wear in industrial settings. In addition, EN 10028-6 P355QH steel has good machinability, making it ideal for the manufacture of complex parts.
The mechanical properties of the EN 10028-6 P355QH steel are as follows:
| YieldRp0.2 | ≤ 187 (MPa) |
| TeileRm | ≤ 813 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 211 |
EN 10028-6 P355QH Material Thermal Properties
The thermal performance parameters of the EN 10028-6 P355QH steel are as follows:
| Temperature (°C) | 34 | 929 | 912 |
| Modulus of elasticity (GPa) | - | 998 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 343 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 314 |
| Poisson’s coefficient, ν | - | - | 331 |
EN 10028-6 P355QH Material Machining Technology
EN 10028-6 P355QH is a high-alloy hot-rolled steel grade that is widely used in the forming and fabrication of parts and components across a variety of industries. It is an alloy of iron and carbon, and is known for its strength, wear resistance, and hardness. The steel is also heat-treatable and weldable and can be machined using a variety of processes.