Casting steel ball diameter from 20-150mm with high hardness, low wear,

low broken rate, strong heat resistant and corrosion resistance, chromium content

from 1%-28%, HRC45-63,.Detailed specifications can be customized according

to customer demand. It is particularly used in cement industry working in the grinder with high temperature,high crushing and strong abrasion .

 The grinding ball with chromium content 1% - 3% and hardness HRC ≥45 called

low chromium alloy cast ball. Low chromium ball is produced by the intermediate frequency electric furnace smelting, metal mold or sand casting .

Features

Good toughness, low abrasion rate, low broken rate ,low chromium ball hardness can reach 45-55HRC

http://www.canchunmetal.com/low-chrome-grinding-balls/648.html