Small stainless steel balls are usually steel balls produced by stainless steel forging process. Currently, commonly used materials for small stainless steel balls include 201, 302, 304, 316, 316L, 420, and 440C.
Definition of small stainless steel balls: Steel containing more than 12.5% chromium and having high resistance to chemical substances corrosion.
Principle: Stainless steel is not rust resistant, but rather resistant to rusting. The principle is to form a dense layer of chromium oxide on the surface of steel through the addition of chromium element, which can effectively block the re contact between steel and air, preventing oxygen in the air from entering the steel and achieving the effect of preventing steel from rusting.
Classification: Chinese National Standards (CNS), Japanese Industrial Standards (JIS), and American Iron and Steel Institute (AISI) use three digit numbers to represent different stainless steels, which are widely cited by industry offices. Among them, the 200 series is chromium nickel manganese austenitic stainless steel, the 300 series is chromium nickel austenitic stainless steel, and the 400 series is chromium stainless steel, including martensite and ferrite.
Small stainless steel balls 440/440C: Performance: Hardness reaches 56-58 degrees, magnetic, good corrosion resistance, strong wear resistance and toughness
Small stainless steel balls usage: Mainly used in bearings, stamping/hydraulic parts, valves, seals, refrigeration equipment, high-precision mechanical parts for aerospace, handicrafts, toys.
Small stainless steel balls application areas: 440C small stainless steel balls are commonly used in industries that require high precision and rust resistance, such as aviation, aerospace, bearings, motors, high-precision instruments, valves, and petroleum.
Characteristics for small stainless steel balls: The metallographic structure belongs to martensitic steel, and the production process requirements are high. There are relatively few domestic enterprises that can produce stainless steel 440C, so enterprises that can produce 440C material are often praised as special stainless steel.
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Contact: Leon
Email: nsk@zyslbearing.com
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