| 
			 Standard  | 
			
			 Chemical Composition Rate ( Wt, % )  | 
		|||||||
| 
			 C  | 
			
			 Si  | 
			
			 Mn  | 
			
			 P  | 
			
			 S  | 
			
			 Ni  | 
			
			 Cr  | 
			
			 Cu  | 
		|
| 
			 S45C  | 
			
			 0.42  | 
			
			 0.15  | 
			
			 0.6  | 
			
			 
  | 
			
			 
  | 
			
			 
  | 
			
			 
  | 
			
			 
  | 
		
| 
			 0.48  | 
			
			 0.35  | 
			
			 0.9  | 
			
			 0.03  | 
			
			 0.035  | 
			
			 0.2  | 
			
			 0.2  | 
			
			 0.3  | 
		|
2. Physical properties
| 
			 Steel  | 
			
			 Tensile strength  | 
			
			 Yield strength  | 
			
			 Relative Elongation  | 
		
| 
			 N/mm2  | 
			
			 N/mm2  | 
			
			 (%)  | 
		|
| 
			 S45C  | 
			
			 570~690  | 
			
			 345~490  | 
			
			 17  | 
		
3. Heat treatment method
| 
			 Steel  | 
			
			 Annealing  | 
			
			 Quenching  | 
			
			 Tempering  | 
			
			 Hardness HRC  | 
		||
| 
			 Temperature (°C)  | 
			
			 Temperature  | 
			
			 Oil  | 
			
			 Temperature  | 
			
			 Air  | 
		||
| 
			 (°C)  | 
			
			 (°C)  | 
		|||||
| 
			 S45C  | 
			
			 ~600  | 
			
			 800~850  | 
			
			 180~200  | 
			
			 35~4  | 
		||
4 Apllications
- Do some details in simple motors, molds, shafts and gears..
- Use for shafts, bolts, crankshafts, torsion bars, light gears, guide rods, moving shafts, screws, forgings, wheel tires, shafts, sickles, axes, knives, hammers, wood drills
