Supply of bearing steel AUP11A AUP12
| Types and grades | Explain | |
| SUP3 | High-carbon steel steel | Mainly used for spring |
|
SUP6 SUP7 |
Chrome-manganese steel | Mainly used in spring, coil springs and torsion springs |
|
SUP9S SUP9A |
Chrome-manganese steel | |
| SUP10 | Chrome vanadium steel steel | Used coil springs and torsion springs |
| SUP11A | Chromium-manganese-boron steels | Mainly used in spring, coil springs and torsion springs |
| SUP12 | Silicon steel, chrome steel | Mainly used for coil spring |
| SUP13 | Cr-Mo steels | Mainly used for large-scale spring, coil spring |
First, the manufacturing methods
1 killed steel manufacturing steel applications.
2 steel forging ratio should be greater than 4S, 4S should be less than the agreement with the demand side.
3 no special requirements, hot-rolled steel should be the state of delivery. In principle, flat cloth hardness should not exceed 302.
4 cold rolled material using material provided by the cold-drawn, cutting, grinding approach to manufacturing.
Second, the chemical composition
The chemical composition (melting analysis) should be consistent with the requirements in Table 4-3-53 Table 4-3-53
| Trademark | Chemical composition (mass fraction) (%) | ||||
| C | Si | Mn | PMaximum | SMaximum | |
|
SUP3 SUP6 SUP7 SUP9 SUP9A SUP10 SUP11A SUP12 SUP13 |
0.75-0.90 0.56-0.64 0.56-0.64 0.52-0.60 0.56-0.64 0.47-0.55 0.56-0.64 0.51-0.59 0.56-0.64 |
0.15-0.35 1.50-1.80 1.80-2.20 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.20-1.60 0.15-0.35 |
0.30-0.60 0.70-1.00 0.70-1.00 0.65-0.95 0.70-1.00 0.65-0.95 0.70-1.00 0.60-0.90 0.70-1.00 |
0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 |
0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 0.035 |
Note: ① The grades of steel with a content of not more than 0.03%.
