Induction hardened chrome plated rod
Induction hardening of chrome plated rods hydraulic cylinders is performed in order to enhance their resistance to external impact damage in high-risk applications.
Our factory, as a leading manufacturer of chrome plated rods, has been producing and providing Induction Hardened Chrome Plated Rods/bars/shafts for nearly 20 years. These products are specifically designed to increase the resistance of piston rods in hydraulic cylinders to external impacts in high-risk applications. Our hard chrome plated rod and Induction Hardened Chrome Plated Bar are extensively utilized in hydraulic cylinders and pneumatic cylinders.
The Induction hardened chrome plated rod results in a superior impact resistant bar ideal for high quality piston rods capable of handling tough environments.
- Steel grades: AISI 1045 / 1050, 4140, CK45, C45, 42CrMo, 20MnV6, 27SiMn
- Typically meets ASTM A108, A311 class B
- Size Range:
- Metric size diameter 6 mm to 800mm, imperail sizes available.
- Induction hardened chrome bar length: Max. 18 meters.
- Hardness of chrome plating HRc 60-72
- Surface hardness of HRc 50 minimum
- Minimum hardness case depth at 1mm
- Hard chrome plated thickness per side: minimum 15 microns /20 microns/ 25 microns, 30microns, 50 μm
- Surface finish of roughness Max Ra 0.4μm, (16 Ra maximum)
- Offered in minimum yield strengths of 75k and 100k
- Custom made diameters and chrome thickness available upon request.
- Heat treatment:
- Induction Hardened Rod (HRC 55-62)
- Q&T(Quenching and tempering) Induction Hardened Rod (HRC 60-65)
Different from the normal chrome plated rods, the induction hardened chrome plated rods are heat treated by induction hardening.
Induction hardened is a type of heat treatment process, for which a metal part is heated to a certain temperature by induction heating and then quenched.
Here below are the material specifcaitons of the induction hardened chrome plated rods.
| Steel Grade | Chemical Composition % | ||||
| Carbon | Mn | Si | P | S | |
| SAE 1045 | 0.43-0.50 | 0.60-0.90 | – | 0.040 Max | 0.050 Max |
| CK 45 | 0.42-0.50 | 0.50-0.80 | 0.40 Max | 0.035 Max | 0.035 Max |
And below is the chemical composition of 4140 chrome plated rod for shafts.
| SAE 4140 | C% | Si% | Mn% | P% | S% | Cr% | Mo% |
| Min | 0.36 | 0.1 | 0.65 | 0.75 | 0.15 | ||
| Max | 0.44 | 0.4 | 1.1 | 0.04 | 0.04 | 1.2 | 0.35 |
Mechanical Properties
| Steel Grade | Mechanical Properties | |||
| Yield Strength | Tensile Strength | Elongation | Hardness | |
| SAE 1045 | 75000 psi / 517 Mpa | 85000 psi / 585Mpa | 10% | Rc 60-72 |
| CK 45 | 75000 psi / 517 Mpa | 85000 psi / 585Mpa | 10% | Rc 60-72 |
With special heat treatment, the yield strength of our induction hardened chrome plated rod can be min. 100K psi (690 Mpa).
For induction hardened chrome plated shafts require high strength, we can supply with material 4140. Here below is the machanical properties of SAE 4140.
| 4140 | Yield strength | Tensile Strength | Elongation | Hardness HB |
| Min | 800 Mpa /115K psi | 900 Mpa /130K psi | 20% | 270 HB |
Here are some common applications of induction hardened chrome plated rods as below:
- Hydraulic cylinders: Induction hardened chrome plated rods are widely used as piston rods in hydraulic cylinders for various industries, such as construction machinery, mining equipment, agricultural machinery, and more. The increased resistance to external impact and wear makes them ideal for harsh working conditions.
- Pneumatic cylinders: Similarly, induction hardened chrome plated rods are also commonly used as piston rods in pneumatic cylinders for industries such as automotive, packaging, and food processing. The increased durability and corrosion resistance provide better performance and longer lifespan.
- Linear motion systems: Induction hardened chrome plated rods can be used as guide rods or linear shafts in linear motion systems, such as CNC machines, printing presses, and robotics. The high precision and wear resistance ensure smooth and accurate movement.
- Transmission shafts: Induction hardened chrome plated rods can be used as transmission shafts in various machines, such as textile machines and printing machines. The increased hardness and wear resistance make them suitable for transmitting torque and power.
- Steel rollers: Induction hardened chrome plated rods can be used as steel rollers in various industries, such as papermaking and printing. The increased surface hardness and wear resistance ensure longer service life and better performance.