直径重量
Diameter/Weight
硬度Hardness
材 质
(Material)
C45
60Mn
B2
B3
B6
C:0.42-0.5, Si:0.17-0.37,
Mn:0.5-0.8, Cr:≤0.25,
P:≤0.035, S:≤0.035,
Ni:≤0.25, Cu:≤0.25
C:0.55-0.65, Si:0.17-0.37,
Mn:0.7-1.0, Cr:≤0.25,
P:<0.04, S:<0.04,
Ni:≤0.3, Cu:≤0.25
C:0.72-0.85, Si:0.17-0.37,
Mn:0.7-1.0, Cr:0.4-0.6,
P:≤0.025, S:≤0.025,
Ni:≤0.02, Cu:≤0.02,
Mo:0.01-0.06
C:0.58-0.66, Si:1.3-1.9,
Mn:0.65-0.8, Cr:0.7-0.9,
P:≤0.025, S:≤0.025,
Ni:≤0.02, Cu:≤0.02,
Mo:0.05-0.12
C:0.97-1.03, Si:0.2-0.3,
Mn:1.0-1.1, Cr:0.5-0.6,
P:≤0.025, S:≤0.025,
Ni:≤0.05, Cu:≤0.06,
Mo:≤0.02
Diameter
直径(MM)
Weight/PC
单重(kg)
Surface
Hardness
表面硬度
(HRC)
Core
Hardness
芯部硬度
(HRC)
Surface
Hardness
表面硬度
(HRC)
Core
Hardness
芯部硬度
(HRC)
Surface
Hardness
表面硬度
(HRC)
Core
Hardness
芯部硬度
(HRC)
Surface
Hardness
表面硬度
(HRC)
Core
Hardness
芯部硬度
(HRC)
Surface
Hardness
表面硬度
(HRC)
Core
Hardness
芯部硬度
(HRC)
20
0.033
55-58
55-58
58-62
58-62
60-64
60-64
62-65
62-65
62-65
62-65
25
0.064
55-58
55-58
58-62
58-62
60-64
60-64
62-65
62-65
62-65
62-65
30
0.111
55-58
45-55
58-62
55-60
60-64
60-64
62-65
62-65
62-65
60-65
40
0.261
55-58
40-55
58-62
55-60
60-64
58-62
62-65
60-65
62-65
60-65
50
0.512
55-58
40-45
58-62
50-55
60-64
58-62
62-65
60-65
62-65
60-65
60
0.883
55-58
30-35
58-62
40-45
60-64
56-60
62-65
60-65
62-65
60-65
70
1.402
53-56
30-35
58-62
40-45
60-64
55-60
61-63
60-65
61-63
60-65
75
1.73
53-56
30-35
58-62
40-45
60-64
55-60
61-63
58-63
61-63
58-62
80
2.092
53-56
30-35
58-62
40-45
59-63
50-55
60-65
58-63
61-63
58-62
90
2.98
50-55
25-30
58-62
30-35
57-61
45-49
60-65
58-63
61-63
58-62
100
4.087
48-52
25-30
57-61
30-35
56-60
44-48
60-65
58-62
61-63
58-62
110
5.44
48-52
25-30
57-61
30-35
55-60
40-45
58-64
53-60
61-63
55-60
120
7.062
48-52
25-30
57-61
30-35
55-60
40-45
56-63
53-60
61-63
55-60
125
8.008
48-52
25-30
57-61
30-35
55-60
38-42
56-63
54-61
61-63
55-60
130
9.008
48-52
25-30
57-61
30-35
55-60
38-42
56-63
50-55
61-63
50-55
140
11.25
48-52
25-30
57-61
30-35
55-60
38-42
56-63
50-55
61-63
50-55
150
13.83
48-52
25-30
57-61
30-35
55-60
38-42
56-63
50-55
61-63
50-55
冲击值 Impact
≥12Ak.J/cm2
≥12Ak.J/cm2
≥12Ak.J/cm2
≥15Ak.J/cm2
≥15Ak.J/cm2
跌落次数 Drop Test
>10000
>10000
>10000
>12000
>12000
公称直径 Diameter
20mm
25mm
30mm
40mm
50mm
60mm
70mm
80mm
90mm
100
110
120
125
130mm
140mm
150mm
允许偏差 Tolerance
＋1/-0.5 mm
＋2/-2 mm
＋3/-2 mm
＋4/-3 mm
＋5/-4 mm
不圆度
Out of Roundness
≤1%
≤2%
≤3%
≤4%
≤5%
金相组织
Microstructure
M+B+C(M-马氏体; B-贝氏体; C-碳化物) (M- Martensite; B- Bainitic; C- Carbide)
