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Low wear Dia 20mm-120mm grinding media steel balls for ball mill

Place of Origin: Shandong

Company Profile

Location: Jinan, Shandong, China (Mainland)
Business Type: Manufacturer

Product Detail

Model No.: B2

Product Description

Hot selling Dia 20mm-120mm hot rolling steel ball for ball mill with good quality

Product Details

Key Specifications/Special Features:

  • Forged grinding steel ball
  • Material: 75MNCR
  • Size from diameter 20 to 150mm
  • Chemical composition (%): C 0.75-0.85, SI 0.17-0.35, MN 0.7-0.9 CR 0.4-0.6, AL 0.01-0.06 S/P 0.03 maximum CU 0.2 maximum NI 0.2max
  • Hardness: HRC60-65
  • Packing: by steel drums or flexible container bags
  • Grinding balls are widely used in the ball mill for mines, cement plants, power stations, chemical industries
  • It has the characters of: no breakage, good wear resistance, no deformation, uniformity of the hardness from surface to core

 

Chemical composition:

Material C Mn Si Cr S P
50MN 0.48-0.56 0.70-1.0 0.17-0.37 0.25 max 0.035max 0.035max
60MN 0.57-0.65 0.70-1.0 0.17-0.37 0.25 max 0.035max 0.035max
65MN 0.60-0.70 0.90-1.20 0.17-0.37 0.25 max 0.035max 0.035max
75Mn 0.72-0.92 0.17-0.37 0.7-1.0 0.4-0.6 0.035max 0.035max
75MnCr 0.70-0.85 0.7-0.8 0.17-0.37 0.2-0.7 0.03 max 0.03 max
75SiMn 0.70-0.90 0.7-1.2 0.4-0.8 0.25 max 0.03 max 0.03 max

 

Specifications:

Impact Test

AK.J/cm2

Endurance Test Times

(5m)

Dia 25mm-60mm Dia 70mm-100mm
    Surface Core Surface Core
50MN ≥12 ≥10000 ≥56 ≥35 ≥56 ≥28
60MN ≥13 ≥10000 ≥58 ≥38 ≥58 ≥29
65MN ≥15
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