JIS G3127 SL5N590 Introduce
Due to the alloying and low carbon content of the JIS G3127 SL5N590s, they can be bent, cut and welded into almost any shape. This makes them excellent for use in applications that involve substantial fabrication, such as automotive frames, tools for special applications and agricultural machinery. Furthermore, when properly hardened, the steels provide greater resistance to wear and tear as well as damage from impacts and temperature changes.
Smelting temperature:1722°C - 1838°C
Application:Nickel steel plate for low temperature pressure vessel
JIS G3127 SL5N590 Material Chemical Composition
The chemical composition of the JIS G3127 SL5N590 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.0300 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 4.7500 | 6.0000 |
| Manganese (Mn) | - | 1.5000 |
| Carbon (C) | - | 0.1300 |
JIS G3127 SL5N590 Material Mechanical Properties
Impact resistance is a measure of a material's ability to absorb the shock of impact. JIS G3127 SL5N590 steel generally has an impact resistance of around 30 to 50 J/cm2. This is lower than the impact resistance of mild steel, which is usually around 60 J/cm2. This lower impact resistance makes JIS G3127 SL5N590 steel less suitable for applications that require protection against impacts and shocks.
The mechanical properties of the JIS G3127 SL5N590 steel are as follows:
| YieldRp0.2 | ≤ 314 (MPa) |
| TeileRm | ≤ 483 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 244 |
JIS G3127 SL5N590 Material Thermal Properties
The thermal performance parameters of the JIS G3127 SL5N590 steel are as follows:
| Temperature (°C) | 14 | 941 | 948 |
| Modulus of elasticity (GPa) | - | 579 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 43.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 443 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 133 |
| Poisson’s coefficient, ν | - | - | 323 |
JIS G3127 SL5N590 Material Machining Technology
JIS G3127 SL5N590 steel has a good combination of strength and toughness, which makes it suitable for many different types of applications. This steel is most often used for automotive components, such as cams, pistons, axles, and engine valves. It is also used for pipeline components and storage vessels and can be used for military equipment and general machining applications, as well. The steel has a carbon content range of 0.15-0.25%, molybdenum content of 0.3-0.5%, and an alloy content range of 0.3-1.3%. It is an austenitic steel, meaning it is non-magnetic, has a moderate strength-to-weight ratio, and has good resistance to corrosion and wear. The steel is considered a high-alloy steel, due to its high alloy content, making it an excellent choice for applications that require corrosion resistance and strength.