GB 1591 09Mn2 Introduce
Another mechanical property of GB 1591 09Mn2 steel is its strength. This steel is known for its strength and toughness, allowing it to bear heavy loads and last for a long time. This makes it ideal for projects like buildings, bridges, and other structures that require a lot of weight support. Additionally, the strength of GB 1591 09Mn2 steel makes it resistant to wear and tear, which can help extend the service life of the structure.
Smelting temperature:1391°C - 1768°C
Application:Low alloy high strength structural steel
GB 1591 09Mn2 Material Mechanical Properties
The mechanical properties of the GB 1591 09Mn2 steel are as follows:
| YieldRp0.2 | ≤ 911 (MPa) |
| TeileRm | ≤ 535 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 21% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 233 |
GB 1591 09Mn2 Material Thermal Properties
The thermal performance parameters of the GB 1591 09Mn2 steel are as follows:
| Temperature (°C) | 13 | 493 | 111 |
| Modulus of elasticity (GPa) | - | 589 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 34 |
| Thermal conductivity (W/m·°C) | - | 31.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 141 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.32 | - | - |
| Deity (kg/dm³) | - | - | 123 |
| Poisson’s coefficient, ν | - | - | 433 |
GB 1591 09Mn2 Material Machining Technology
Another consideration is the cutting speed and feed rate to achieve the desired surface finish and cutting efficiency. Depending on the material being machined and the cutting conditions, feed rates may vary from 0.05 to 0.4 mm/revolution. Similarly, cutting speeds are typically in the range of 30-150 m/min (300-1500 r/min). In general, the higher the cutting speed, the higher the cutting efficiency, but it is important to avoid overloading the tool, as this could damage the cutting edge and reduce tool life.