GB/T 700 U12759 Introduce
GB/T 700 U12759 carbon structural steel is produced in accordance with a number of Chinese standards. These standards dictate the steels properties and its chemical composition, and determine the quality standard for the product. The most commonly used standards for GB/T 700 are GB/T 700-2006 and GB/T 700-2008.
Smelting temperature:1554°C - 1973°C
Application:Carbon structural steels
GB/T 700 U12759 Material Chemical Composition
The chemical composition of the GB/T 700 U12759 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.3500 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0340 |
| Manganese (Mn) | - | 1.5000 |
| Carbon (C) | - | 0.2400 |
GB/T 700 U12759 Material Mechanical Properties
GB/T 700 U12759 steel also has excellent mechanical properties. Its yield strength ranges from 215MPa to 275MPa. The tensile strength ranges from 330MPa to 380MPa. This steel also has a good elongation rate of 15%-20%. GB/T 700 U12759 steels are characterized by their ductility, allowing for good formability and weld-ability. GB/T 700 U12759 steel can also be cold-formed and bolted or welded with ease.
The mechanical properties of the GB/T 700 U12759 steel are as follows:
| YieldRp0.2 | ≤ 477 (MPa) |
| TeileRm | ≤ 338 (MPa) |
| ImpactKV/Ku | 23(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 323 |
GB/T 700 U12759 Material Thermal Properties
The thermal performance parameters of the GB/T 700 U12759 steel are as follows:
| Temperature (°C) | 22 | 153 | 758 |
| Modulus of elasticity (GPa) | - | 937 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 23.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 433 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 332 |
| Poisson’s coefficient, ν | - | - | 414 |
GB/T 700 U12759 Material Machining Technology
Machining is an important process in many industries, including the production of steel pieces. GB/T 700 U12759 steel is a well-known Chinese standard steel grade, and it has good properties for machining. In this article, we will take a look at the machining of GB/T 700 U12759 steel, including the types of cutting tools that are used, the machining processes that are involved, and the safety measures that should be taken to prevent accidents.