Key Features of 4140 Chrome Plated Rod Induction Hardened (HRC 50–62)
Superior Alloy Steel – 4140 / 42CrMo4
4140 alloy steel delivers:
- High tensile strength
- Excellent fatigue resistance
- Good ductility and toughness
- Strong performance under variable loads
Induction Hardened Surface (HRC 50–62)
The rod surface undergoes induction hardening, reaching HRC 50–62, significantly improving:
- Wear resistance
- Bending and impact resistance
- Fatigue life under high stress
- Resistance to scoring and pitting
Hard Chrome Plating
The chrome layer offers:
- Low surface roughness (Ra ≤ 0.2 μm)
- Excellent corrosion protection
- Smooth movement inside hydraulic seals
- High resistance to abrasion
Precision Ground & Polished
Manufactured with high-precision equipment to ensure:
- Accurate tolerances (f7 / f8 / g6 available)
- Excellent straightness
- Mirror-like finish
Long Service Life
Ideal for applications where repeated heavy loads, high pressure, and harsh environments require strong and durable components.
Applications of 4140 Chrome Plated Rod Induction Hardened (HRC 50–62)
The rod is engineered for high-demand industries that require superior strength and wear resistance:
Hydraulic Cylinder Piston Rods
- Excavators
- Loaders
- Backhoe machines
- Mining hydraulics
- Industrial hydraulic presses
Construction & Heavy-Duty Machinery
- Cranes
- Bulldozers
- Drilling rigs
- Tunneling machinery
Agriculture & Forestry Equipment
- Harvesters
- Log splitters
- Tractor hydraulic systems
Material Handling & Lifting Equipment
- Forklifts
- Aerial platforms
- Lifting cranes
- Telescopic boom cylinders
Industrial Automation
- Linear actuators
- Precision mechanical shafts
- High-frequency reciprocating systems
Technical Specifications – 4140 Chrome Plated Rod Induction Hardened (HRC 50–62)
| Item |
Specification |
| Material Grade |
4140 Alloy Steel (42CrMo4 / SCM440 equivalent) |
| Surface Treatment |
Hard Chrome Plated |
| Induction Hardened Hardness |
HRC 50–62 |
| Core Hardness |
HRC 28–35 |
| Surface Hardness |
850–1050 HV |
| Chrome Thickness |
20–30 μm (customizable) |
| Surface Roughness |
Ra ≤ 0.2 μm |
| Diameter Tolerance |
f7, g6, h7 (optional) |
| Straightness |
≤ 0.2 mm / 1m |
| Yield Strength |
≥ 850 MPa |
| Tensile Strength |
1000–1200 MPa |
| Standard Lengths |
1–8 meters (custom lengths available) |
| Surface Process |
Precision grinding + polishing + chrome plating |
| Features |
High strength, wear-resistant, corrosion-resistant |
| Machining Options |
Threading, drilling, chamfering, end machining |
Why Choose 4140 Chrome Plated Rod Induction Hardened (HRC 50–62)?
1. Much Higher Strength Than CK45 or ST52
4140 alloy steel offers superior mechanical properties and longer service life.
2. Induction Hardened Layer Improves Durability
- Resistance to wear
- Less bending
- Better impact resistance
- Improved fatigue strength
Ideal for extreme working conditions.
3. Premium Chrome Surface
The uniform chrome layer protects against:
- Corrosion
- Abrasion
- Chemical exposure
- Seal wear
4. Lower Maintenance Cost
The rod resists damage, reducing cylinder repair and replacement frequency.
5. Built for High-Pressure Systems
With high yield strength and a hardened surface, the rod performs reliably in high-pressure hydraulic cylinders.
Product Advantages at a Glance
- High strength alloy steel (4140)
- Induction hardened HRC 50–62
- Smooth chrome plated finish
- Superior load-bearing capacity
- Long operational life
- Excellent straightness and dimensional accuracy
- Suitable for demanding outdoor and industrial environments
Quality Control – 4140 Chrome Plated Rod
Every rod undergoes the following tests:
✔ Ultrasonic flaw detection
✔ Hardness test (HRC verification)
✔ Chrome thickness test
✔ Salt spray corrosion test
✔ Surface roughness test
✔ Dimensional tolerance check
✔ Straightness verification
We guarantee stable mechanical properties and minimum defect rates.
Customization Options
We offer full customization based on your requirements:
- Custom diameter (φ 8–200 mm)
- Special tolerance classes (g6 / h7)
- Extra-thick chrome plating
- Cut-to-length or long-length rods
- End machining (threading, turning, drilling)
- Special packaging for export
Send your drawings, and we can produce based on OEM or tailored specifications.
Ordering Information – 4140 Chrome Plated Rod Induction Hardened (HRC 50–62)
To receive a quotation, please provide:
- Diameter
- Length
- Quantity
- Tolerance requirement
- Chrome thickness
- Any machining details
Our engineering and sales team will respond with price, delivery time, and export solutions.
