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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T.R.S.(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.                                 |