GB QT400-18 GB/T 1348
GB QT400-18 GB/T 1348 Products Description
GB QT400-18 GB/T 1348 is one of the main products of our company. Other than offer high quality QT400-18 with competitive price, we also help to resolve all kinds of doubts of clients. Such as QT400-18 chemical composition, QT400-18 properties,QT400-18 yield strength, QT400-18 tensile strength, QT400-18 equivalent grades, etc. Meanwhile, we also do procesing for GB QT400-18 GB/T 1348, including cutting, bending, welding, drilling, etc.
Application: Ductile iron castings.
Heat treated: 1753°C - 1495°C.
GB QT400-18 GB/T 1348 Product Details
GB QT400-18 GB/T 1348 Chemical element
GB QT400-18 GB/T 1348 is hot selling products of our company. Our GB QT400-18 GB/T 1348 chemical composition is controlled strictly with stipulation of standard GB/T 1348.
Meanwhile, our advanced GB QT400-18 GB/T 1348 production line strives to control impurities to the minimum, so as to make GB QT400-18 GB/T 1348 play its best performance. Below is the proportion of main elements in GB QT400-18 GB/T 1348:
| Element | Min | Max | Similar |
|---|---|---|---|
| Si | 2.5000 | 3.3000 | - |
| S | - | 0.0200 | - |
| P | - | 0.0500 | - |
| Mn | - | 0.3000 | - |
| C | 3.5000 | 4.0000 | - |
GB QT400-18 GB/T 1348 Mechanical properties
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 885 (≥) | 179 (≥) | 44 | 42 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 423 |
GB QT400-18 GB/T 1348 Physical properties
Physical properties of GB QT400-18 GB/T 1348 are mainly indicated by modulus of electrical resistance value, thermal conductivity, specific thermal capacity, coefficient of thermal expansion, elasticity, poisson's ratio, density, etc.
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 43 | - | - | 0.34 | - | |||
| 111 | 745 | - | 24.3 | 123 | - | ||
| 113 | - | 44 | 22.2 | 223 | 313 |
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