GB 24510 9Ni590A Introduce
GB 24510 provides several benefits to the shipbuilding industry in China. By providing clear technical requirements for hot-rolled steel sheets and strips, this standard helps ensure that the steel used in ships is of high quality and meets the necessary safety standards. This can help reduce the risk of accidents and improve the safety of ships and their crews.
Smelting temperature:1116°C - 1182°C
Application:9% Nickel steel plates for pressure vessels with specified low temperature properties
GB 24510 9Ni590A Material Chemical Composition
The chemical composition of the GB 24510 9Ni590A steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.0500 |
| Silicon (Si) | - | 0.3500 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0150 |
| Nickel (Ni) | 8.5000 | 10.0000 |
| Molybdenum (Mo) | - | 0.1000 |
| Manganese (Mn) | 0.3000 | 0.8000 |
| Copper (Cu) | - | 0.3500 |
| Chromium (Cr) | - | 0.2500 |
| Carbon (C) | - | 0.1000 |
GB 24510 9Ni590A Material Mechanical Properties
The chemical composition of GB 24510 9Ni590A steel ensures that it has the necessary strength, toughness, and ductility to withstand the harsh conditions encountered in marine environments. By specifying the allowable ranges for various elements, this standard helps ensure that the steel used in shipbuilding is of high quality and meets the necessary safety standards. In addition, the limits on sulfur and phosphorus content help prevent these harmful impurities from weakening the material, while the limits on other elements such as chromium and nickel can improve the steel's corrosion resistance.
The mechanical properties of the GB 24510 9Ni590A steel are as follows:
| YieldRp0.2 | ≤ 335 (MPa) |
| TeileRm | ≤ 136 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 32% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 324 |
GB 24510 9Ni590A Material Thermal Properties
The thermal performance parameters of the GB 24510 9Ni590A steel are as follows:
| Temperature (°C) | 11 | 414 | 525 |
| Modulus of elasticity (GPa) | - | 894 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 24 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 142 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.32 | - | - |
| Deity (kg/dm³) | - | - | 334 |
| Poisson’s coefficient, ν | - | - | 213 |
GB 24510 9Ni590A Material Machining Technology
Machinability: Machinability refers to the ease with which a material can be cut, drilled, or shaped using machine tools. The machinability of GB 24510 9Ni590A steel is not specified by the standard, but it is generally considered to have good machinability due to its low carbon content.