GB/T 700 U12358 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:1194°C - 1781°C
Application:Carbon structural steels
GB/T 700 U12358 Material Chemical Composition
The chemical composition of the GB/T 700 U12358 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.3000 |
| Sulfur (S) | - | 0.0400 |
| PhOsphorus (P) | - | 0.0400 |
| Nickel (Ni) | - | 0.3000 |
| Manganese (Mn) | 0.3000 | 0.6000 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | - | 0.3000 |
| Carbon (C) | 0.1300 | 0.1800 |
| Arsenic (As) | - | 0.0080 |
| Silicon (Si) | - | 0.3000 |
| Sulfur (S) | - | 0.0450 |
| PhOsphorus (P) | - | 0.0450 |
| Manganese (Mn) | 0.3500 | 0.8000 |
| Carbon (C) | - | 0.1800 |
GB/T 700 U12358 Material Mechanical Properties
GB/T 700 U12358 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 U12358 steels are characterized by their ductility, allowing for good formability and weld-ability. GB/T 700 U12358 steel can also be cold-formed and bolted or welded with ease.
The mechanical properties of the GB/T 700 U12358 steel are as follows:
| YieldRp0.2 | ≤ 668 (MPa) |
| TeileRm | ≤ 777 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 22% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 343 |
GB/T 700 U12358 Material Thermal Properties
The thermal performance parameters of the GB/T 700 U12358 steel are as follows:
| Temperature (°C) | 23 | 854 | 347 |
| Modulus of elasticity (GPa) | - | 826 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 32.2 |
| Specific thermal capacity (J/kg·°C) | - | 311 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 433 |
| Poisson’s coefficient, ν | - | - | 242 |
GB/T 700 U12358 Material Machining Technology
Machining is an important process in many industries, including the production of steel pieces. GB/T 700 U12358 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 U12358 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.