GB/T 700 Q215A Introduce
GB/T 700 Q215A steel is an ideal choice for a variety of construction applications due to its excellent thermal properties and strength-to-weight ratio. It is a low carbon and high-strength quenched and tempered structural steel that is widely used in a multitude of applications, including bridges, buildings, ships, tanks, power transmission lines, transmission towers, and more. GB/T 700 Q215A steel is also used to manufacture components for mechanical and automotive products such as shear blades, die casting molds, and wind turbine blades.
Smelting temperature:1824°C - 1935°C
Application:Carbon structural steels
GB/T 700 Q215A Material Mechanical Properties
Overall ductility of a material measures its response to tensile and compressive loading. It is measured using a ductility test, which typically involves applying both longitudinal compressive and tensile forces to a sample of material until it fails. Generally, the overall ductility of GB/T 700 Q215A steel can reach up to 50%.
The mechanical properties of the GB/T 700 Q215A steel are as follows:
| YieldRp0.2 | ≤ 334 (MPa) |
| TeileRm | ≤ 786 (MPa) |
| ImpactKV/Ku | 23(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 322 |
GB/T 700 Q215A Material Thermal Properties
The thermal performance parameters of the GB/T 700 Q215A steel are as follows:
| Temperature (°C) | 14 | 833 | 231 |
| Modulus of elasticity (GPa) | - | 192 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 43.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 221 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 412 |
| Poisson’s coefficient, ν | - | - | 223 |
GB/T 700 Q215A Material Machining Technology
The machining of GB/T 700 Q215A steel involves a number of different processes. First, the material must be cut to size before it can be machined. Once it is the correct size, the material can then be drilled, reamed, and countersunk using twist drills and other cutting tools. After the holes have been drilled, reamed, and countersunk, the material can then be tapped using taps and thread cutting tools. This will allow for bolts and other types of fasteners to be used in the assembly of the finished product.