Welcome to the official website of Tai'an City Zhenzheng Steel Ball Manufacturing Co., Ltd.!
Product Category
440/440C stainless steel ball
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.
Keywords:
Detailed introduction
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; therefore, companies that can manufacture 440C materials are often praised as producing "special stainless steel." The heat treatment process is rather complex, prone to cracking, and demands high precision. This makes it the **hardest** type of stainless steel ball among 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.
Comparison: Compared to 440 stainless steel balls, these balls exhibit stronger rust and corrosion resistance, increased hardness, and improved wear resistance.
Chemical composition
AISI 440C stainless steel balls are high-carbon, high-chromium balls known for their excellent hardness, wear resistance, and corrosion resistance. These balls are commonly used in precision applications like ball bearings, pumps, and aerospace components, where both strength and durability are crucial.
Physical properties
Tensile strength | 285,000 psi |
Yield strength | 275,000 psi |
Modulus of elasticity | 29,000,000 psi |
Density | 0.277 pounds per cubic inch |
Production and Processing
Packaging and shipping
Get a quote
Please provide your contact information and specify your requirements—we’ll arrange for a specialist to get in touch with you!
