[Stainless steel bearings] Why is there a small amount of magnetism?
Release time: 2019-09-06 11:01:45 Views: 373
The materials of general stainless steel bearings are as follows;
SUS420（3Cr13） First, SUS420 (3Cr13)
420 stainless steel is a martensitic stainless steel with certain wear resistance, corrosion resistance and high hardness. It is suitable for various types of bearings, precision machinery, electrical, equipment, instruments, meters, transportation tools, household appliances, etc. It is mostly used to manufacture parts that are resistant to atmospheric, water vapor, water and oxidizing acid corrosion. It is widely used in the bearing field.
SUS440（9Cr18） 、SUS440C（9Cr18Mo） Second, SUS440 (9Cr18), SUS440C (9Cr18Mo)
cr13钢高，所以强度，硬度比cr13钢高，其他性能与cr13相似，但焊接性差，耐蚀性和韧性都很强，在微小型轴承和轴承要转速较高领域使用特别广泛。 Martensitic stainless steel has higher carbon content than cr13 steel, so its strength and hardness are higher than cr13 steel. Other properties are similar to cr13, but it has poor weldability, corrosion resistance and toughness. The field is particularly widely used.
SUS630不锈钢 Third, SUS630 stainless steel
630 stainless steel is a martensitic precipitation hardening stainless steel. 630 stainless steel has good attenuation performance, strong resistance to corrosion fatigue and water droplets. Corrosion resistance is equivalent to 304 stainless steel, and its hardness is better than 304 stainless steel. It is suitable for food industry, offshore platform, paper industry, medical equipment, water washing equipment, environmental protection cleaning machinery, chemical machinery, and widely used in industries with high requirements for prevention.
SUS304(06Cr19Ni10/0Cr18Ni9) 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 thermal external hardening phenomenon, non-magnetic 304 (weak magnetic after processing) stainless steel. Heat resistance, and widely used in making corrosion-resistant and moldable equipment and parts. At present, 304 stainless steel bearings are widely used in food processing machinery, chemical machinery, marine equipment, medical equipment, water washing equipment, environmental protection cleaning machinery, and are widely used in industries with high rust prevention.
SUS316（0Cr17Ni12Mo2） Fourth, SUS316 (0Cr17Ni12Mo2)
316 austenitic stainless steel has good plasticity, toughness, cold degeneration, good welding process performance, good appearance gloss of cold rolled products; due to the addition of Mo (2-3%), the corrosion resistance and especially the pitting resistance are particularly excellent. Bearings required for strong acid and alkali environments.