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Scr420
Chemical Composition%：
Material Feature：
►To meet the requirements of heart strength, well wear resistance on surface or the carburization parts of complex shape but under the lower load such as gear, gear shaft, worm shaft, cam and etc.
►With higher strength and good quenching.
►It can get good comprehensive mechanical properties and impact-absorption at low temperature and with no temper brittleness after it quenched and tempered by low temperature.
Chemical Composition%：
| C | Si | Mn | Cr | Ni | S | P |
| 0.18-0.23 | 0.15-0.35 | 0.60-0.90 | 0.90-1.20 | ≦0.25 | ≦0.03 | ≦0.03 |
Material Feature：
►To meet the requirements of heart strength, well wear resistance on surface or the carburization parts of complex shape but under the lower load such as gear, gear shaft, worm shaft, cam and etc.
►With higher strength and good quenching.
►It can get good comprehensive mechanical properties and impact-absorption at low temperature and with no temper brittleness after it quenched and tempered by low temperature.
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