轴承钢球性能及材质成份英文表示方法
Specification
AISI 52100, 100Cr6, 1.3505, SUJ2, EN31B
Description
· A low alloy chrome steel specifically formulated for use in bearings.
Material Composition
· Carbon (C) 0.98% to 1.1%
· Chrome (Cr) 1.45%
· Silicon (Si) 0.23%
· Manganese (Mn) 0.35%
· Posphorous (P) < 0.025%
· Sulphur (S) < 0.025%
Mechanical Properties
· Density: 7.81 g cm-1
· Hardness: 58 to 62 HRC
· Modulus of Elasticity: 210GPa
· Shear Modulus: 80GPa
· Poissons Ratio: 0.3
·
Electrical Properties
· Electrical resistivity: 2.19 ?Ohm mm
Thermal Properties
· Coefficient of thermal expansion @20-300C: 12.00x10-6 K-1
· Thermal conductivity: 46.6 W m-1 K-1
Corrosion Resistance
· Low resistence to corrosion, and particularly prone to pitting in damp atmosphereric conditions.
· Care must be taken to avoid moisture in both use and storage.
Available Sizes
· 0.5mm (1/64") to 150mm (2") although availability of sizes above 2" is limited
Available Grades
· AFBMA Std 10: 3, 5, 10, 15, 20, 25, 28, 50, 100, 200, 500, 1000, 2000
· ISO 3790: 3, 5, 10, 15, 20, 25, 28, 50, 100, 200, 500, 1000, 2000
· DIN 5401:Class I, Class II, Class III, Class IV, Class V, Class VI
Applications
· Ball Bearings, Valves, Measuring Equipment, Ball Screws,
General Information
· By far the most used ball material, Chrome steel balls provide the most cost effective solution for the vast majority of applications