化学成分
C
Si Mn
Cr S P
0.52-0.65 0.17-0.37 0.6-1.2 ≤0.25
≤0.030 ≤0.030
0.61-0.68 0.2-0.4 0.8-1.2 0.9-1.2
≤0.035 ≤0.035
SIZE SURFACE CORE
DIA30-60MM HRC60-64 HRC59-63
DIA70-80MM HRC60-64 HRC58-62
DIA90-100MM HRC60-64 HRC57-61
DIA110-140MM HRC55-60 HRC29-58
Nominal diameter Diametrical
Tolerance Weight of single ball in average Surface
hardness Impact toughness
(mm) (mm) (g) (HRC) (j/cm2 )
Φ20 +2
-1 32 50-65 ≥12
Φ25 64
Φ30 110
Φ40 263
Φ50 513
Φ60 +3
-2 888
Φ70 1410
Φ80 2104
Φ90 2996
Φ100 4110
Φ110 +4
-2 5457 45-60
Φ120 7102
Φ130 9030
Φ140 +4
-3 11278
Φ150 13871
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