SUS630, a duplex stainless steel with austenite and ferrite, is widely used in the fields of chemicals, food, and healthcare due to its high strength, hardness, and excellent corrosion resistance. This article will provide a detailed analysis of SUS630's strength, hardness, and corrosion resistance and explore its application in various fields.
- Strength
SUS630 has a high strength with a yield strength of 420MPa and a tensile strength of 620MPa, which is more than 1.5 times the strength of SUS304. This high strength is mainly derived from the synergistic effect of austenite and ferrite. Austenite has good plasticity and toughness, which can absorb impact energy, while ferrite has high strength to resist external loads.
- Hardness
SUS630 also has a high hardness with an HRC value of 30-35. This high hardness mainly comes from the ferrite phase. Ferrite has high hardness but poor plasticity and toughness. By optimizing material composition and heat treatment processes, the hardness and overall performance of SUS630 can be further improved.
- Corrosion resistance
SUS630 has excellent corrosion resistance and can tolerate various acids, alkalis, salts, and other media. This excellent corrosion resistance is mainly derived from the synergistic effect of austenite and ferrite. Austenite has good corrosion resistance and can resist the corrosion of oxidizing media, while ferrite has strong resistance to chloride corrosion and can resist the corrosion of acidic media.
- Application
Due to its excellent strength, hardness, and corrosion resistance, SUS630 is widely used in the fields of chemicals, food, and healthcare. In the chemical industry, SUS630 can be used to manufacture various corrosion-resistant pipes, containers, reactors, and so on; in the food industry, SUS630 can be used to manufacture various food processing equipment, packaging materials, and so on; in healthcare, SUS630 can be used to manufacture various medical devices, implants, and so on.
- Conclusion
SUS630 is a duplex stainless steel with good strength, hardness, and corrosion resistance. By optimizing material composition and heat treatment processes, its overall performance can be further improved. SUS630 has wide application prospects in the fields of chemicals, food, healthcare, and so on.
Customer service 1 
Customer service 2