S45C Hard Chrome Plated Steel Bar usually used for producing hydraulic cylinder piston rods,It goes through the machining process of cold drawn, peeling, grinding, polishing, and hard chrome plating, in order to enhance the surface hardness for friction and corrosion resistance; the material will also be easier for further machining, and its precision can achieve international standard.The S45C chrome plated rods can be application for Join Pen, High-Strength Screw, Bolting, Sliding Bar and Auto Parts.For Plastic Machines parts: Main Rods, Screw Bars and Feeding Bars.Features:
- Material：JIS S45C、SAE1045、DIN CK45、EN8
- Application：Pneumatic/ Hydraulic Cylinder, Engineering Machine, Hydraulic/ Pneumatic Auto Machine, Plastic Injection Molding Machine.
- Thickness of Chrome Layer：min 20/25/30/50 Micron or customized
- Hardness of Chrome Layer： HV850 min. (0.1)
- Surface Roughness：Ra 0.2μm max.
- External Diameter Accuracy：ISO h7、f7、h8、f8、g6
- Straightness： 0.5/1000
- Roundness： Ra <= 0.2u
●Material Grade/ Chemical Composition, Mechanical Property
| Chemical Composition % | |||||||
| Material | C | Mn | Si | S | P | Cr | Mo |
| 45 | 0.42-0.50 | 0.5-0.8 | 0.17-0.37 | 0.035 Max | 0.035 Max | ||
| SAE 1045 | 0.43-0.50 | 0.6-0.9 | 0.10-0.35 | 0.050 Max | 0.040 Max | ||
| S45C | 0.42-0.48 | 0.6-0.9 | 0.10-0.35 | 0.050 Max | 0.040 Max | ||
| SAE 4140 | 0.36-0.45 | 0.65-1.1 | 0.10-0.40 | 0.04 Max | 0.04 Max | 0.75-1.20 | 0.15-0.35 |
| 42CrMo4 | 0.38-0.45 | 0.60-0.90 | 0.40 Max | 0.035 Max | 0.035 Max | 0.90-1.20 | 0.15-0.35 |
| Mechanical Properties | |||||
| Material | TS Mpa | YS Mpa | Elongation % | Impact | Condition |
| SAE 1045 45 S45C | 610 | 355 | 15 | 39J Min | Hot Rolled |
| 800 | 630 | 20 | 41J Min | QT | |
| SAE 4140 42CrMo4 | 900 | 800 | 20 | QT | |