
Size 25mm Material 50mn Unbreakable Hot Rolled Steel Balls. Unbreakable Performance: Forged steel balls with excellent wear performance and breakage rate less than 0.5%. Customized Sizes: Available in sizes ranging from 10mm to 165mm to meet specific grinding needs. High Hardness: Surface hardness up to HRC 60 with core hardness up to HRC 59 for durability. Multiple Material Options: Offering 45#, 50Mn, 60Mn, 65Mn, B2, B3, B4, and B6 steel grades. Strict Quality Control: 100% inspection of finished products with visual and function checks. Free Sample Available: Free samples under 10kg provided, with courier fee paid by customer. ISO Certification: Company holds ISO 9001:2015 certification and third-party test reports available. OEM/ODM Service: Customization from samples available with 4 R&D engineers supporting development.