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   合金球牌号Carbide ball grade | 牌号Grade | 密度Density(g/cm3) | 硬度Hardness(HRA≥) | 抗弯强度TRS(MPa) |  | YG6X | 14.95 | 91.5 | 1800 |  | YG8 | 14.80 | 89.5 | 2200 |  | YG11 | 14.40 | 87.0 | 2500 | 
  Many carbide grades can meet your requirements for precision machined cemented carbide balls in their good precision, good wear resistance and good corrosion resistance     GRINDING BALL LEVEL   | 精磨等级Grade | 尺寸范围 Size Range
 | Deviation from
 Spherical
 Form
 | Lot Diameter Variation
 | Allowable Ball Gage
 Variation
 | Nominal Ball
 Diameter
 Tolerance
 | Marking Increments
 | Maximum Surface
 Roughness in
 Micro-Inches"Ra"
 |  |
 |
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 | 3 | 0.006-1/2 | 0.000003 | +/-0.00000 | +/-0.00003 | - | 0.00001 | 0.5 |  | 5 | 0.006-1/2 | 0.000005 | +/-0.00000 | +/-0.00005 | - | 0.00001 | 0.8 |  | 10 | 0.006-7/8 | 0.00001 | +/-0.000010 | +/-0.00005 | - | 0.00001 | 1 |  | 25 | 0.006-1 | 0.000025 | +/-0.000025 | +/-0.00010 | - | 0.00001 | 2 |  | 50 | 0.006-1 | 0.00005 | +/-0.000050 | - | +/-0.0002 | 0.00005 | 3 |  | 100 | 0.006-1 | 0.0001 | +/-0.000100 | - | +/-0.0005 | - | 5 |  | 200 | 0.006-1 | 0.0002 | +/-0.000200 | - | +/-0.0010 | - | 8 |  | 1000 | 0.006-1 | 0.001 | +/-0.001000 | - | +/-0.0050 | - | - | 
   *Other carbide grades are also available upon your request.  
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