GB/T 700 Q275C Introduce
Steel is an essential material in the expansion and development of modern societies, and its quality and standards play a crucial role in construction and product manufacturing. GB/T 700 provides a universal standard for steel producers, product manufacturers, and end-users, making it possible for all to create products and projects of a consistent quality.
Smelting temperature:1335°C - 1253°C
Application:Carbon structural steels
GB/T 700 Q275C Material Chemical Composition
The chemical composition of the GB/T 700 Q275C steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.3500 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Manganese (Mn) | - | 1.5000 |
| Carbon (C) | - | 0.2000 |
GB/T 700 Q275C Material Mechanical Properties
GB/T 700 Q275C steel is an all-round steel used for various metal constructions in China. It has excellent mechanical properties, including yield strength, tensile strength, toughness, elongation, and even overall ductility.
The mechanical properties of the GB/T 700 Q275C steel are as follows:
| YieldRp0.2 | ≤ 543 (MPa) |
| TeileRm | ≤ 113 (MPa) |
| ImpactKV/Ku | 43(J) |
| ElongationA | 23% |
| Reduction in cross section on fractureZ | 31% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 441 |
GB/T 700 Q275C Material Thermal Properties
The thermal performance parameters of the GB/T 700 Q275C steel are as follows:
| Temperature (°C) | 42 | 639 | 341 |
| Modulus of elasticity (GPa) | - | 967 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 234 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 144 |
| Poisson’s coefficient, ν | - | - | 231 |
GB/T 700 Q275C Material Machining Technology
When machining GB/T 700 Q275C steel, it is important to follow safety procedures and guidelines. These include using the correct protective equipment, such as safety goggles, gloves, and hearing protection, as well as ensuring that the work area is kept clean and free from obstructions. In addition, machines should be checked for wear and tear before use, and any defective machines should be prevented from being used. It is also important to ensure that cutting tools are sharp, and that they are replaced or sharpened when necessary.