Martensitic hardened stainless steel balls, they feature good hardness, corrosion resistance , wear and abrasion resistance. Balls are provided in passivate. Applications special bearings, anti-friction bearings, special pumps, recirculating balls, lighters, pens, automotive seat belts & components. Material: stainless steel Size: 25.4mm (1") Precision: g100-g1000 International standards Chn: 4cr13 Usa: 420c Ger: 1.4034 Fra: z34c14 Ita: x46cr13 Rus: 40kh13 Chemical composition C: 0.43-0.50% Si: 1.00% max Mn: 1.00% max P: 0.040% max S: 0.030% max Cr: 12.5-14.5% Technical data Hardness: 52-60 hrc Ultimate compressive strength: 1700-1900mpa Service temperature: 0 to 400�c Mechanical properties Tensile strength: 275, 000 psi Density: 0.280 lbs/cu.In Physical characteristic Good corrosion resistance Heat-resistance Martens tic material How to inquire When ordering balls, please specify the following: Nominal ball diameter Type of material Precision grade Quantity Payment terms All standard steel balls are always in stock and ready for immediate off-the-shelf delivery If your application calls for customized balls, send us your specifications and we will glady meet them