【BRIEF INTRODUCTION】310S stainless steel, an austenitic stainless steel, is known for its excellent high-temperature properties, including high resistance to oxidation and corrosion. This article explores the characteristics of 310S stainless steel hot-rolled plates, shedding light on its composition, physical properties, and its utility in various industrial applications.
Chemical Composition
310S stainless steel is designed for high temperature and corrosive environments, as reflected in its chemical makeup:
- Chromium (Cr): 24.0% – 26.0%
- Nickel (Ni): 19.0% – 22.0%
- Manganese (Mn): up to 2.0%
- Silicon (Si): up to 1.5%
- Carbon (C): up to 0.08%
- Phosphorus (P): up to 0.045%
- Sulfur (S): up to 0.030%
- Iron (Fe): Balance
The high chromium and nickel content significantly enhances its oxidation resistance and overall corrosion resistance, particularly in sulfur-containing environments.
Physical Properties
The physical properties of 310S stainless steel make it suitable for various high-temperature applications:
- Density: 7.9 g/cm³
- Melting Point: 1400°C to 1450°C
- Thermal Conductivity: 14.2 W/m·K at 100°C
- Specific Heat Capacity: 0.50 J/g·K
- Electrical Resistivity: 72 microhm-cm at 20°C
These properties indicate the material’s ability to perform well under high-temperature conditions while maintaining structural integrity and efficiency.
Mechanical Properties
310S stainless steel is notable for its robust mechanical properties:
- Tensile Strength: 515 to 620 MPa
- Yield Strength: 205 MPa (minimum)
- Elongation: 40% (minimum)
- Hardness: Typically less than 90 HRB
These characteristics ensure that 310S stainless steel hot-rolled plates can withstand significant stress and strain in demanding environments.
Applications
Heat Resistant Equipment
Due to its high chromium and nickel content, 310S is extensively used in the manufacture of heat resistant equipment such as furnace parts, heat exchangers, and combustion chambers.
Kilns and Furnace Parts
310S plates are used in constructing parts for cement kilns and furnaces due to their ability to endure the temperatures and aggressive materials encountered.
Power Plants
In power plants, 310S is employed in boiler parts and heat treatment baskets, which require materials that can withstand high temperatures and prevent corrosion over prolonged periods.
Petrochemical and Chemical Industries
The chemical resistance and strength at high temperatures make 310S stainless steel plates ideal for applications in chemical processing environments, including reactors and evaporators.
Food Processing Equipment
310S is also used in food processing equipment where high temperature is involved, such as in baking ovens and other heat processing units, offering a non-contaminating surface that is easy to clean.
Conclusion
310S stainless steel hot-rolled plates are a premium choice for applications requiring high temperature strength and corrosion resistance. Their ability to perform reliably in aggressive and high-temperature environments makes them indispensable in industries like petrochemical, power generation, and food processing. The combination of excellent heat resistance and durability ensures that 310S stainless steel continues to be highly valued in demanding industrial applications.