GB/T 16270 Q500D Introduce
The GB/T 16270 Q500D Carbon and Low-alloy High-strength Structural Steel Plate is a critical component of many heavy-duty applications, such as bridges, dams, tunnels, and commercial buildings. It is also used in the automotive industry, to make car frames and components. The high-strength steel plates is an excellent choice for many structural applications due to its light weight, durability, and corrosion resistance. It is available in a number of different grades, each with its own unique combination of properties and benefits. The GB/T 16270 Q500D Carbon and Low-alloy High-strength Structural Steel Plate is an ideal choice for a variety of heavy-duty applications.
Smelting temperature:1996°C - 1135°C
Application:Quenched and tempered steel plate for high strength structure
GB/T 16270 Q500D Material Chemical Composition
The chemical composition of the GB/T 16270 Q500D steel are as follows:
| Element | Min | Max |
|---|---|---|
| Aluminum (Al) | 0.0150 | - |
| Boron (B) | - | 0.0040 |
| Molybdenum (Mo) | - | 0.2000 |
| Nitrogen (N) | - | 0.0150 |
| Copper (Cu) | - | 0.5500 |
| Nickel (Ni) | - | 0.8000 |
| Chromium (Cr) | - | 0.6000 |
| Titanium (Ti) | - | 0.2000 |
| Vanadium (V) | - | 0.1200 |
| Niobium (Nb) | - | 0.1100 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0300 |
| Manganese (Mn) | - | 1.8000 |
| Silicon (Si) | - | 0.6000 |
| Carbon (C) | - | 0.1800 |
GB/T 16270 Q500D Material Mechanical Properties
The mechanical properties of the GB/T 16270 Q500D steel are as follows:
| YieldRp0.2 | ≤ 935 (MPa) |
| TeileRm | ≤ 179 (MPa) |
| ImpactKV/Ku | 44(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 21% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 143 |
GB/T 16270 Q500D Material Thermal Properties
The thermal performance parameters of the GB/T 16270 Q500D steel are as follows:
| Temperature (°C) | 34 | 375 | 126 |
| Modulus of elasticity (GPa) | - | 246 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 221 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.34 | - | - |
| Deity (kg/dm³) | - | - | 341 |
| Poisson’s coefficient, ν | - | - | 313 |
GB/T 16270 Q500D Material Machining Technology
The compatibility of tools with GB/T 16270 Q500D steel is important in order to achieve optimal results during machining operations. The tools should have high wear resistance and be hard enough to cut through the steel without wearing out. High-speed steel, cobalt, and tungsten carbide tools are generally recommended as they are hard enough to cut through steel and also have high wear resistance. Carbide and ceramic tools are also recommended for turning operations as they can improve surface finish.