4140 Hard Chrome Bar is engineered for high-load, high-precision applications. Made from 4140 alloy steel, it features excellent tensile strength (up to 850 MPa) and wear resistance.
The surface is treated with industrial hard chrome for superior corrosion protection and smooth performance.
Each 4140chrome plating rod is precision-ground and polished, ensuring low friction and minimal seal wear in hydraulic piston systems.
Widely used in construction, mining, and heavy machinery.
Stable performance. Long service life. Minimal maintenance.
Delivery condition
Hard Chrome Piston Rod
Quenched & Tempered (Q+T) Rod
Induction Hardened Rod
Q+T Induction Hardened Rod
Corrosion resistance:
Test in natural salt spray according to ASTM B 117-96 hours.
What is a 4140 Hard Chrome Bar used for?
It is mainly used in hydraulic cylinders, piston rods, and heavy-duty mechanical parts that require strength and surface durability.What’s the difference between a 4140chrome plating rod and regular chrome bar?
4140 rods offer higher strength and toughness, making them better suited for industrial and high-load applications.Is the 4140 Hard Chrome Bar resistant to corrosion?
Yes. The industrial hard chrome layer provides excellent resistance to rust, wear, and harsh environments.Can it be used for hydraulic piston applications?
Absolutely. Its strength and smooth chrome surface are ideal for reducing friction and extending seal life in hydraulic pistons.What sizes are available for the 4140 Hard Chrome Bar?
Common diameters range from 12mm to 200mm, with custom lengths and tolerances available upon request.
Advantages Of Our 4140 Hard Chrome Bars
- We meticulously manufacture precision material parts in strict adherence to customer-provided drawings, packaging specifications, and quality requirements.
- We achieve tolerances as tight as +/-0.01mm, ensuring high precision in every component.
- Our quality assurance is backed by the industry’s most advanced inspection tools to guarantee unparalleled quality.
- Our team comprises highly experienced engineers and skilled workers, dedicated to excellence in every project.
- We pride ourselves on fast and timely delivery, ensuring that every order is fulfilled promptly and professionally.
- We offer expert guidance during the design process, providing valuable suggestions to optimize costs without compromising quality.
Our main business range is listed as follows
Carbon Seamless Steel pipe/tube
Hydraulic cylinder tube(Honed tube)
Hard chrome plated rod/bar/shaft(Piston rod)
Hydraulic cylinder
