Stainless steel balls 440/440C: Performance: hardness reaches 56-58 degrees, magnetic, good corrosion resistance, strong wear resistance and toughness
Use: Mainly used in bearings, stamping/hydraulic parts, valves, seals, refrigeration equipment, aerospace high-precision mechanical parts, crafts, toys.
Specifications: 0.5mm-Φ100mm
Application areas: 440C stainless steel balls are usually used in industries that require high precision and rust resistance: aviation, aerospace, bearings, motors, high-precision instruments, valves, and petroleum.
Features: The metallographic structure belongs to martensitic steel, and the production process requirements are high. There are relatively few domestic companies that can produce stainless steel 440C, so companies that can produce 440C materials are often known as special stainless steel. The heat treatment process is relatively complicated, easy to crack, and has high precision requirements. It is the hardest stainless steel ball among steel balls: HRC≧58. The hardness is close to that of bearing steel balls, but it has stronger rust and corrosion resistance than the former.
Comparison: It has stronger anti-rust and anti-corrosion properties than 440 stainless steel balls, with increased hardness and wear resistance.
Performance: Hardness reaches 51-52 degrees, magnetic, with certain corrosion resistance and toughness
Use: Suitable for various precision machinery, bearings, electrical equipment, transportation vehicles, household appliances, etc. It is mostly used to manufacture parts resistant to corrosion by the atmosphere, water vapor, water and oxidizing acids.
Specification: Φ2.0—Φ25.4
Application areas: 420 stainless steel balls are usually used in industries with high requirements for precision and anti-rust properties: motorcycle accessories, pulleys, stainless steel bearings, plastic bearings, handicrafts, valves, and petroleum.
Features: Representative of martensitic steel, commonly known as stainless iron, magnetic, good anti-rust properties, and high hardness HRC50-55.
Performance: Hardness ≦28 degrees, non-magnetic after demagnetization, very strong anti-rust ability, not easy to rust after long-term immersion in salt water
Use: Mainly used in medical equipment, baby bottles, valves, electronic components, etc.
Specification: Φ1.0-Φ50.8
Application field: 304 stainless steel ball is the most widely used steel ball on the market, which can be used for medical equipment, chemical industry, aviation, aerospace, plastic hardware: perfume bottles, sprayers, valves, nail polish, motors, switches, electric irons, washing machines, refrigerators, air conditioners, medicinal materials, auto parts, bearings, instruments, baby bottles.
Features: A typical representative of austenitic steel, generally non-magnetic, but it will be magnetic after being polished, and can be demagnetized, HRC≤26. It has good anti-rust and anti-corrosion properties.
Comparison: 304HC stainless steel balls are softer and easier to process than 304 stainless steel balls, while 304L stainless steel balls have stronger anti-rust and anti-corrosion properties than the above two, are easy to weld, have excellent polishing properties, and are more suitable for industries with higher surface requirements.
Performance: Hardness ≦28 degrees, non-magnetic after demagnetization, strong anti-rust ability, non-corrosive
Use: Mainly used in medical equipment, food machinery, cosmetic accessories, body accessories, instrumentation, etc.
Specifications: Φ1.0—Φ38.1
Application areas: 316 stainless steel balls are a product with relatively high requirements, usually used in special industries such as medical equipment, chemical industry, aviation, aerospace: perfume bottles, sprayers, valves, nail polish, body accessories, mobile phone boards
Features: Austenitic steel is the most high-end steel ball in the industry so far, HRC≤26, most suitable for industries with high anti-corrosion requirements, and all performances are better than 304 stainless steel balls. Comparison: 316L stainless steel balls are softer and more pliable, so they are usually used for body accessories. Stainless steel ball 201/stainless steel polishing ball
Performance: Hardness ≤26 degrees, non-magnetic after demagnetization
Stainless steel ball 201/stainless steel polishing ball
Use: Mainly used in general hardware accessories, household appliance accessories, stamping stainless steel, etc.
Specification: Φ1.0—Φ38.1
Application field: 201 stainless steel ball is widely used in various hardware industries, handicrafts, plastic products, such as lamps, switches, motorcycle accessories, bags, bearings, and die castings.
Features: It belongs to nickel-saving steel, austenitic steel, non-magnetic, low price and excellent performance. It can be processed, welded, and drilled, with a hardness of HRC≤28. (Note: Xinxin Steel Ball reminds you that 201 stainless steel balls cannot be used in industries with high requirements for rust and corrosion resistance, such as seawater or acidic substances).
Application areas: 302 stainless steel balls are widely used in automotive parts, aviation, aerospace, hardware tools, and chemicals. Specifically as follows: handicrafts, bearings, pulleys, medical instruments, posts, electrical appliances, etc.
Features: 302 stainless steel balls are austenitic steels, which are similar to 304, but the hardness of 302 is higher, HRC≤28. It has good rust and corrosion resistance.
