1. Introduction
0Cr18Ni12Mo2Ti steel, also known as 18-12-2 steel, is a ferritic stainless steel and austenite steel hybrid material developed in China in the early 1990s. It has excellent corrosion resistance, superior heat resistance, and excellent mechanical properties. This steel grade is often used in the manufacturing of kitchenware, tableware, medical apparatuses, household appliances and food stains.
2. Properties of 0Cr18Ni12Mo2Ti Steel
0Cr18Ni12Mo2Ti steel has excellent corrosion resistance due to its high chromium and molybdenum alloying elements. As compared to 304 steel, 0Cr18Ni12Mo2Ti steel has higher oxidation resistance, better anti-scaling ability, and improved softening point resistance. Furthermore, because of its good corrosion resistance, this steel grade is suitable for use in highly corrosion-prone environments, such as steel structures in coastal areas and shipbuilding.
0Cr18Ni12Mo2Ti steel is also superior in high-temperature properties, which allows it to be used in hot-gas or high-temperature fluid applications. In comparison to 304 steel, 0Cr18Ni12Mo2Ti steel shows a better property in thermal expansion and creep deformation, as well as superior tensile strength and yield point. The titanium addition also improves the weldability of this steel.
3. Heat Treatment and Forming of 0Cr18Ni12Mo2Ti Steel
0Cr18Ni12Mo2Ti steel is usually preheated before forming since it has a high carbon content. Preheating help avoid cracks and reduce the chances of deformations. For bending, the preheating temperature should reach 650℃, while for welding, the preheating temperature should reach 400℃. For cold forming, heated dies should be used to avoid forming delay.
When it comes to heat treatment, this steel is mostly used in an annealed state. In special cases, an austenitic state may be specified. Heat treatment in the annealed state should be done at 1040-1080℃ and cooled in a slightly warmer furnace.
4. Applications
0Cr18Ni12Mo2Ti steel is suitable for manufacturing kitchenware, gas-powered equipment, tableware and medical appliances. Its excellent properties give it an edge for food processing equipment such as sinks, tables and pallets, as well as scientific research equipment that require high temperature up to 1000℃. It is widely used in fast food industry due to its heat resistance, anti-scaling and flexibility. In addition, 0Cr18Ni12Mo2Ti steel is an ideal choice for industrial parts and components, such as bellows and collectors.
5. Conclusion
0Cr18Ni12Mo2Ti steel is a ferritic stainless steel and austenite steel hybrid material developed in China in the early 1990s. It has excellent corrosion resistance, superior heat resistance, and excellent mechanical properties. This steel grade is often used in the manufacturing of kitchenware, tableware, medical apparatuses, household appliances and food stains. Its high chromium and molybdenum alloying elements improves its corrosion resistance and allows it to be used in hot-gas or high-temperature fluid applications. Its seamless processability, heat resistance, and anti-scaling properties makes it an ideal choice for many application.
