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Forged steel ball 1) Size:20-150mm 2) Hardness:55-65 3)Certificate:ISO9001:2008 4)Performance: Unbreakable
Forged steel grinding ball
Chemical elements of forged steel balls
C
Si
Mn
Cr
S
P
0.50-0.65
0.15-0.37
0.6-1.2
≤0.25
≤0.04
0.7-0.9
0.45-0.75
0.7-1.25
0.11-0.4
Specification and hardness of forging ball
Nominal diameter
Diameteical
Tolerance
Weight of single ball in
average
Surface
hardness
Impact
toughness
(mm)
(g)
(HRC)
(j/cm)
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
Φ120
7102
Φ130
9030
Φ140
+4 -3
11278
Φ150
13871
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