EN 10028-6 P690Q Introduce
The steel grades covered by the EN 10028-6 standard includes a variety of non-alloy and alloy steels. Some of these grades include P355NL1, P355NL2, P355NH, P460NH and P460NL2. The standard further divides these grades into normalised rolled, thermomechanically rolled, thermomechanical control processed (TMCP) and fine grain steels.
Smelting temperature:1787°C - 1787°C
Application:Pressure flat steel products - Part 6: Weldable fine grain steel, quenched and tempered
EN 10028-6 P690Q Material Chemical Composition
The chemical composition of the EN 10028-6 P690Q steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.1200 |
| Titanium (Ti) | - | 0.0500 |
| Silicon (Si) | - | 0.8000 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | - | 2.5000 |
| Niobium (Nb) | - | 0.0600 |
| Nitrogen (N) | - | 0.0150 |
| Molybdenum (Mo) | - | 0.7000 |
| Manganese (Mn) | 1.2000 | 1.7000 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | - | 1.5000 |
| Carbon (C) | - | 0.2000 |
| Aluminum (Al) | 0.0200 | - |
EN 10028-6 P690Q Material Mechanical Properties
EN 10028-6 P690Q 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 P690Q steel has good machinability, making it ideal for the manufacture of complex parts.
The mechanical properties of the EN 10028-6 P690Q steel are as follows:
| YieldRp0.2 | ≤ 375 (MPa) |
| TeileRm | ≤ 573 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 24% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 131 |
EN 10028-6 P690Q Material Thermal Properties
The thermal performance parameters of the EN 10028-6 P690Q steel are as follows:
| Temperature (°C) | 23 | 266 | 525 |
| Modulus of elasticity (GPa) | - | 413 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 21.2 |
| Specific thermal capacity (J/kg·°C) | - | 313 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.34 | - | - |
| Deity (kg/dm³) | - | - | 342 |
| Poisson’s coefficient, ν | - | - | 341 |
EN 10028-6 P690Q Material Machining Technology
EN 10028-6 P690Q steel is highly weldable, making it easy to join components together using welding. The material can be joined using shielded metal arc welding, gas metal arc welding, and gas tungsten arc welding. It is also possible to weld dissimilar metals, such as stainless steel and carbon steel, to EN 10028-6 P690Q steel without issue.