GB/T 714 L13703 Introduce
GB/T 714 L13703 steel is a high-strength steel that is widely used in a variety of industries. It is composed primarily of iron and carbon, with trace amounts of other elements such as silicon, manganese, phosphorus, and sulfur. GB/T 714 L13703 steel has excellent mechanical properties, including high tensile and yield strength, excellent corrosion resistance, and high temperature resistance.
Smelting temperature:1399°C - 1456°C
Application:Structural steel for bridge
GB/T 714 L13703 Material Chemical Composition
The chemical composition of the GB/T 714 L13703 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.0800 |
| Titanium (Ti) | - | 0.0300 |
| Silicon (Si) | - | 0.5500 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0300 |
| Nickel (Ni) | - | 0.5000 |
| Niobium (Nb) | - | 0.0600 |
| Nitrogen (N) | - | 0.0120 |
| Molybdenum (Mo) | - | 0.2000 |
| Manganese (Mn) | 1.0000 | 1.7000 |
| Copper (Cu) | - | 0.5500 |
| Chromium (Cr) | - | 0.8000 |
| Carbon (C) | - | 0.1800 |
| Boron (B) | - | 0.0040 |
| Aluminum (Al) | - | 0.0150 |
GB/T 714 L13703 Material Mechanical Properties
The mechanical properties of the GB/T 714 L13703 steel are as follows:
| YieldRp0.2 | ≤ 867 (MPa) |
| TeileRm | ≤ 829 (MPa) |
| ImpactKV/Ku | 41(J) |
| ElongationA | 42% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 411 |
GB/T 714 L13703 Material Thermal Properties
The thermal performance parameters of the GB/T 714 L13703 steel are as follows:
| Temperature (°C) | 12 | 643 | 638 |
| Modulus of elasticity (GPa) | - | 363 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 314 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 422 |
| Poisson’s coefficient, ν | - | - | 114 |