GB/T 16270 Q800C Introduce
The GB/T 16270 Q800C Carbon and Low-alloy High-strength Structural Steel Plate is widely used in construction applications, as it is an incredibly versatile material with numerous benefits. This material can be welded, bent, machined, and formed using conventional methods. It is highly resistant to corrosion and oxidation, and provides fantastic fatigue strength, making it perfect for components that need to endure the forces of high stress and vibration. The GB/T 16270 Q800C Carbon and Low-alloy High-strength Structural Steel Plate is a great choice for applications that require a strong, lightweight metal with superior electrical, thermal, and mechanical properties.
Smelting temperature:1578°C - 1353°C
Application:Quenched and tempered steel plate for high strength structure
GB/T 16270 Q800C Material Chemical Composition
The chemical composition of the GB/T 16270 Q800C steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.1200 |
| Titanium (Ti) | - | 0.0500 |
| Silicon (Si) | - | 0.8000 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | - | 2.0000 |
| Niobium (Nb) | - | 0.0600 |
| Molybdenum (Mo) | - | 0.7000 |
| Manganese (Mn) | - | 2.0000 |
| Copper (Cu) | - | 0.5000 |
| Chromium (Cr) | - | 1.5000 |
| (CEV) | - | 0.7200 |
| Carbon (C) | - | 0.2000 |
| Boron (B) | - | 0.0050 |
GB/T 16270 Q800C Material Mechanical Properties
The mechanical properties of the GB/T 16270 Q800C steel are as follows:
| YieldRp0.2 | ≤ 322 (MPa) |
| TeileRm | ≤ 996 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 123 |
GB/T 16270 Q800C Material Thermal Properties
The thermal performance parameters of the GB/T 16270 Q800C steel are as follows:
| Temperature (°C) | 44 | 754 | 583 |
| Modulus of elasticity (GPa) | - | 221 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 42.2 |
| Specific thermal capacity (J/kg·°C) | - | 432 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.43 | - | - |
| Deity (kg/dm³) | - | - | 212 |
| Poisson’s coefficient, ν | - | - | 443 |
GB/T 16270 Q800C Material Machining Technology
The compatibility of tools with GB/T 16270 Q800C steel is important in order to achieve optimal results during machining operations. The tools should have high wear resistance and be hard enough to cut through the steel without wearing out. High-speed steel, cobalt, and tungsten carbide tools are generally recommended as they are hard enough to cut through steel and also have high wear resistance. Carbide and ceramic tools are also recommended for turning operations as they can improve surface finish.