high chrome grinding media ball

RTZQCr28

RTZQCr28 – High chrome grinding media ball

Specification

Ball Diameter(mm)
¢10 ¢12.7 ¢15 ¢17 ¢20 ¢25 ¢30 ¢40 ¢50 ¢60 ¢70 ¢80 ¢90 ¢100 ¢110 ¢120 ¢125 ¢130

Chemical Composition

Designation Chemical Composition
C Si Mn Cr Mo P S
RTZQCr28 2.0-3.2 ≤1.0 0.2-1.0  ≥28 ≤1.0 ≤0.10 ≤0.08

Mechanical Properties and Microstructure

Designation (HRC) Ak(J/cm2) Microstructure Time of  Falling Balls
Quenching state Non Quenching state
RTZQCr28 ≥58    ≥45 ≥4.0 M+C ≥18000