https://1dd0cebe46f273c7.en.made-in-china.com/product/PXunsyEKEjrM/China-1015-Carbon-Steel-Balls-for-Automotive-Valve.html Product Details Chrome steel ball , as the main part of bearing, are being widely used on the application like automotive industry, motors, home appliances, instruments, hardwares etcs. Shandong Dihui mainly produce the chrome steel with sizes 0.3-120mm, with the main material chrome GCR15 or GCR15SiMn. The balls have high precision, good surface smoothness, standard hardness and excellent wear-resisting performance. Our products are being widely exported to Europe, USA, Japan, South Korea, Middle Asia and Southeast Asia. Material Chemical composition(%) C Si Mn Cr Mo P S Ni Cu GCr15 steel ball 0.95 to 1.05 0.15 to 0.35 0.25 to 0.45 1.40 to 1.65 ≤ 0.1 ≤ 0.025 ≤ 0.02 ≤ 0.25 ≤ 0.25 GCr15SiMn steel ball 0.95 to 1.05 0.45 to 0.75 0.95 to 1.25 1.40 to 1.65 ≤ 0.1 ≤ 0.025 ≤ 0.02 ≤ 0.25 ≤ 0.25 Country China USA Germany Russia Japan Material Standard GB/T18254-2...
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