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hardness AISI 440C stainless steel balls
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The microstructure of this steel is martensitic, and its production process has high technical requirements. There are relatively few domestic enterprises capable of producing stainless steel 440C; thus, companies that can manufacture 440C materials often earn the reputation of being special-grade stainless steel producers. The heat treatment process is rather complex and prone to cracking, while also demanding high precision. This steel is the hardest stainless steel ball among all steel balls: its Rockwell hardness (HRC) is ≥58. Its hardness is comparable to that of bearing steel balls, yet it boasts superior rust- and corrosion-resistant properties.
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AISI 440C Stainless Steel Balls: High-Performance and Durability
AISI 440C stainless steel balls are durable, corrosion-resistant, and high-hardness precision balls. They are widely used in bearings, valve components, and medical devices.
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