First, SUS420 (3Cr13)
420 stainless steel is a martensitic stainless steel with certain wear resistance, corrosion resistance and high hardness. It is suitable for all kinds of bearings, precision machinery, electrical, equipment, instruments, instruments, transportation vehicles, household appliances, etc. It is widely used in the manufacture of parts resistant to atmospheric, water vapor, water and oxidizing acids. It is widely used in the bearing field.
Second, SUS440 (9Cr18), SUS440C (9Cr18Mo)
Martensitic stainless steel, carbon content is higher than cr13 steel, so the strength and hardness are higher than that of cr13 steel. Other properties are similar to that of cr13, but the weldability is poor, the corrosion resistance and toughness are very strong, and the rotation speed is high in micro-small bearings and bearings. The field is particularly widely used.
Third, SUS630 stainless steel
630 stainless steel is martensitic precipitation hardening stainless steel. 630 stainless steel has good attenuation performance, strong resistance to corrosion and water droplets. Corrosion resistance is equivalent to 304 stainless steel, hardness is better than 304 stainless steel, suitable for food industry, offshore platform, paper industry, medical equipment, washing equipment, environmental cleaning machinery, chemical machinery, widely used in the industry with high requirements.
Fourth, SUS304 (06Cr19Ni10/0Cr18Ni9)
304 austenitic stainless steel has good corrosion resistance, heat resistance, low temperature strength and mechanical properties, good hot workability such as stamping and bending, no heat external hardening phenomenon, no magnetic 304 (weak magnetic after processing) stainless steel with its good Heat resistance, and is widely used in the manufacture of equipment and parts for corrosion resistance and formability. At present, the bearings of 304 stainless steel materials are widely used in food processing machinery, chemical machinery, marine equipment, medical equipment, washing equipment, environmentally friendly cleaning machinery, and have high application to rust prevention.
Fifth, SUS316 (0Cr17Ni12Mo2)
316 austenitic stainless steel has good plasticity, toughness, cold deformation and good welding process performance. The appearance of cold rolled products is good. Because of the addition of Mo (2-3%), the corrosion resistance and especially pitting resistance are particularly excellent. Bearings required for strong acid and alkali environments.