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Remark:
External Diameter Accuracy: f8
Surface Roughness: Ra0.2 μm ~ Ra0.4 μm
Hard Chrome Thickness: 20 Micron ±10%
Surface Hardness: HV 850 (Minimum) up
Standard Length: 3M - 6M
Standard Size: 10Φ ~ 200Φ
Material: JIS G4105(SCM440), SAE4140, DIN17204
Purpose:
Operation for auto parts, injection machine, hydraulic machine, tie bars.
Symbol |
Chemical Analysis (%) |
Equivalent
AISI No. |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
SCM440 |
0.38-0.43 |
0.15-0.35 |
0.60-0.85 |
≤0.030 |
≤0.030 |
— |
0.90-1.20 |
0.15-0.30 |
4140 |
Product Standard Form
Dia mm Ø |
6 |
16 |
25 |
38 |
55 |
80 |
110 |
150 |
8 |
18 |
25.4 |
38.1 |
60 |
85 |
120 |
160 |
10 |
20 |
28 |
40 |
65 |
90 |
125 |
170 |
12 |
22 |
30 |
45 |
70 |
100 |
130 |
180 |
14 |
22.4 |
35 |
50 |
75 |
105 |
140 |
200 |
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