JIS G3101 SS55 Introduce
The JIS G3101 SS55 steel is a popular steel material used for construction and engineering purposes. It is often used for structural components such as bridge beams, beam connections, and columns, as well as for mechanical components, pressure vessels, and shipbuilding. Because of its versatility, it has been used in a variety of applications across many different industries.
Smelting temperature:1491°C - 1261°C
Application:General structure rolling steel
JIS G3101 SS55 Material Chemical Composition
The chemical composition of the JIS G3101 SS55 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Sulfur (S) | - | 0.0400 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | - | 1.6000 |
| Carbon (C) | - | 0.3000 |
JIS G3101 SS55 Material Mechanical Properties
The material has a yield strength of 275-295MPa, depending on the thickness and grade of steel used. Additionally, the steel has high tensile strength, reaching up to 470- 610MPa. The material's elongation rate is generally around 18-24%, which can increase to as much as 32% for certain grades. The steel's hardness is generally between 167-229HBW.
The mechanical properties of the JIS G3101 SS55 steel are as follows:
| YieldRp0.2 | ≤ 176 (MPa) |
| TeileRm | ≤ 873 (MPa) |
| ImpactKV/Ku | 31(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 41% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 212 |
JIS G3101 SS55 Material Thermal Properties
The thermal performance parameters of the JIS G3101 SS55 steel are as follows:
| Temperature (°C) | 24 | 228 | 598 |
| Modulus of elasticity (GPa) | - | 182 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 44.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 112 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 211 |
| Poisson’s coefficient, ν | - | - | 244 |
JIS G3101 SS55 Material Machining Technology
Machining JIS G3101 SS55 steel can be challenging due to its high strength and toughness. It is important to choose the right cutting tools, cutting speed, feed rate, and coolant when machining JIS G3101 SS55 steel, as these factors will affect the performance and longevity of the tools and the quality of the finished part. Having a good understanding of the machining process and best practices will ensure successful machining of JIS G3101 SS55 steel and can minimize costly mistakes and downtime.