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  • Forged(rolling)steel balls
  • Forged(rolling)steel balls
  • Forged(rolling)steel balls
  • Forged(rolling)steel balls

›

Forged(rolling)steel balls
Skype：chen.cherry56
WhatsApp：+86-18563713664
Email：sales@jnhuafu.cn
PRODUCT DESCRIPTION

Diameter tolerance and roundness 

Diameter30405060708090100110120125150
Diameter roundness（mm）±2+3，-2+4，-3+5，-4
Roundness(%)≤2≤3≤4≤5


Chemical composition

BrandC（%）Si（%）Mn（%）Cr（%）Cu（%）Mo（%）P（%）S（%）Ni(%)
45#0.42-0.500.17-0.370.5-0.800-0.250-0.250-0.300-0.0350-0.0350-0.30
60Mn0.57-0.650.17-0.370.70-1.00-0.250-0.250-0.300-0.0350-0.0350-0.30
65Mn0.62-0.700.17-0.370.90-1.00-0.250-0.250-0.300-0.0350-0.0350-0.30
70Mn0.67-0.750.17-0.370.90-1.200-0.250-0.250-0.300-0.0350-0.0350-0.30
40Cr0.37-0.450.17-0.370.50-0.80.80-1.10-0.250-0.300-0.0350-0.0350-0.30
70Cr20.65-0.750.20-0.300.75-0.900.55-0.700-0.250-0.300-0.0300-0.0300-0.30
B-20.70-0.800.17-0.370.70-0.800.50-0.600-0.250-0.300-0.0350-0.0350-0.30
B-30.58-0.661.2-1.60.65-0.800.70-0.900-0.250-0.300-0.0350-0.0350-0.30


Technical specification

BrandBreakage rateHardness(HRC)Impact value(J/cm²）Drop times(times)Micro structure
45#<1%≥45≥12≥8000M+C
60Mn<1%≥55≥12≥12000M+C
65Mn<1%≥58≥12≥12000M+C
70Mn<1%≥60≥12≥12000M+C
40Cr<1%≥55≥12≥12000M+C
70Cr2<1%≥58≥12≥12000M+C
B-2<1%≥58≥12≥15000M+C
B-3<1%≥60≥12≥15000M+C
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