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0086-311-87811840
0086-311-87811811
0086-311-87811480
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E-mail: lubei@minmetalshb.com
E-mail: minmetalshb@163.com
Person in charge:
Mrs. LuBei, Export Manager


GRINDING MEDIA BALL

Forging Steel Grinding Balls

Standard: Chinese standard of YB-T091-2005

DIA(MM)202530405060708090100110120125130140150
TOLERANCE+2/-2MM+3/-2MM+3/-4MM+5/-4MM

Chemical Composition & mechanical properties:

CSiMnCrNiCuImpact ToughnessImpact TestHRC
0.57%-0.65%0.17%-0.37%0.70%-1.00%0.25%0.300.25%12 AK.J/cm2 10000 times50-65

Casting Steel Grinding Balls

Standard: Chinese stand of GB-T17445-2009

DIA(MM)202530405060708090100110120125130140150
TOLERANCE+2/-2MM+3/-2MM+3/-4MM+5/-4MM

Chemical Composition & mechanical properties

Products Brand Chemical Composition
C Si Mn Cr Mo Cu Ni P S
High-chrome cast ball ZQCr26 2.0-3.3 1.2 0.3-1.5 23-30 0-3.0 0-1.2 0-1.5 0.10 0.06
ZQCr20 2.0-3.3 1.2 0.3-1.5 18-23 0-3.0 0-1.2 0-1.5 0.10 0.06
ZQCr17 2.0-3.3 1.2 0.3-1.5 14-18 0-3.0 0-1.2 0-1.5 0.10 0.06
ZQCr12 2.0-3.3 1.2 0.3-1.5 10-14 0-3.0 0-1.2 0-1.5 0.10 0.06
Middle-chrome cast ball ZQCr8 2.1-3.3 1.5 0.3-1.5 4-6 0-1.0 0-0.8 - 0.10 0.06
ZQCr5 2.1-3.3 1.5 0.3-1.5 4-6 0-1.0 0-0.8 - 0.10 0.06
Low-chrome cast ball ZQCr2 2.1-3.6 1.5 0.3-1.5 1-3 0-1.0 0-0.8 - 0.10 0.06


Products Brand HRC Breakage Rate Impact Life Times/Min
Impact Toughness AK.J/cm2
High-chrome cast ball ZQCr26 58 1 8000 3
ZQCr20 58 1 8000 3
ZQCr17 58 1 8000 3
ZQCr12 58 1 8000 3
Middle-chrome cast ball ZQCr8 48 2 8000 3
ZQCr5 47 2 8000 3
Low-chrome cast ball ZQCr2 45 2 8000 3
Add: Room 5017,Block A,COFCOHB Plaza No.345,Youyi North Street,Shijiazhuang,Hebei,China. :13010502000363