GB/T 20878 S30103 Introduce
GB/T 20878 S30103 stainless steel is also extremely versatile, and can be used to produce components for various other applications. Its superior mechanical and corrosion resistance properties, along with its good toughness and ductility, make it suitable for construction, manufacturing, and marine environments. Furthermore, its low carbide content, combined with its excellent heat resistance, makes it an ideal choice for food processing and preservation, such as brewing and winemaking equipment.
Smelting temperature:1346°C - 1847°C
Application:Stainless steel and heat resistant steel grades and chemical composition
GB/T 20878 S30103 Material Chemical Composition
The chemical composition of the GB/T 20878 S30103 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 1.0000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0450 |
| Nickel (Ni) | 6.0000 | 8.0000 |
| Nitrogen (N) | - | 0.2000 |
| Manganese (Mn) | - | 2.0000 |
| Chromium (Cr) | 16.0000 | 18.0000 |
| Carbon (C) | - | 0.0300 |
GB/T 20878 S30103 Material Mechanical Properties
The ductility of GB/T 20878 S30103 steel is another key factor to consider. Its ductility is typically dependent on the grade, with higher grades having lower ductility and vice versa. The ultimate elongation of GB/T 20878 S30103 steel can range from 20% to 40%.
The mechanical properties of the GB/T 20878 S30103 steel are as follows:
| YieldRp0.2 | ≤ 199 (MPa) |
| TeileRm | ≤ 699 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 343 |
GB/T 20878 S30103 Material Thermal Properties
The thermal performance parameters of the GB/T 20878 S30103 steel are as follows:
| Temperature (°C) | 11 | 947 | 375 |
| Modulus of elasticity (GPa) | - | 741 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 211 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 342 |
| Poisson’s coefficient, ν | - | - | 444 |
GB/T 20878 S30103 Material Machining Technology
GB/T 20878 S30103 steel is an excellent material for machining and fabrication. Its high carbon content and strength make it an ideal choice for a range of applications. The selection of the proper cutting tools, cutting speeds, and feed rates are important for successful machining. HSS and HSC tools with a cutting speed of up to 350 m/min and a feed rate of 0.2 to 0.5 mm per revolution are generally recommended. Care should also be taken to ensure that the cutting tools are sharp in order to reduce cutting forces and increase cutting accuracy.