JIS G3127 SL3N28 Introduce
JIS G3127 SL3N28 is a family of low carbon mildly alloyed steels used primarily for structural and mechanical purposes. These steels are widely used due to their excellent strength-to-weight ratio and varied mechanical properties. They can be used in applications that require high levels of strength and impact resistance, such as automotive frames, bridges, suspension systems and much more.
Smelting temperature:1138°C - 1145°C
Application:Nickel steel plate for low temperature pressure vessel
JIS G3127 SL3N28 Material Chemical Composition
The chemical composition of the JIS G3127 SL3N28 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.3000 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 3.2500 | 3.7500 |
| Manganese (Mn) | - | 0.7000 |
| Carbon (C) | - | 0.1700 |
JIS G3127 SL3N28 Material Mechanical Properties
Yield strength is the load-bearing capacity of a material when it is subjected to tension or compression. In the case of JIS G3127 SL3N28 steel, the yield strength is typically around 275 MPa. This is notably higher than the yield strength of mild steel, which is typically around 205 MPa. This makes it an effective material for applications that require high strength and durability.
The mechanical properties of the JIS G3127 SL3N28 steel are as follows:
| YieldRp0.2 | ≤ 457 (MPa) |
| TeileRm | ≤ 125 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 22% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 413 |
JIS G3127 SL3N28 Material Thermal Properties
The thermal performance parameters of the JIS G3127 SL3N28 steel are as follows:
| Temperature (°C) | 32 | 935 | 784 |
| Modulus of elasticity (GPa) | - | 662 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 12 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 43.2 |
| Specific thermal capacity (J/kg·°C) | - | 134 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 314 |
| Poisson’s coefficient, ν | - | - | 441 |
JIS G3127 SL3N28 Material Machining Technology
Another benefit of machining JIS G3127 SL3N28 steel is its good formability. This steel is highly malleable and can be easily formed into complex shapes and designs. This makes it an ideal choice for parts that need to be bent or twisted into intricate shapes. The steel's good formability also makes it easier and faster to machine, as the parts can be formed into the desired shape before machining begins.