ST52 Chrome Plated Rod Normalized (HRC 15–22)

ST52 Chrome Plated Rod Normalized (HRC 15–22) is a precision shaft for Hydraulic Piston Rods, offering excellent weldability, dimensional accuracy, and surface finish. With moderate hardness and anti-corrosion chrome coating, it suits medium-duty hydraulic applications.

Brand:
EASTAI
Material:
ST52
Length:
Max. 15m
ID Tolerance:
f7/f8/g6,etc
Packing:
Anti rust oil to be spread on rod surface and each rod to be packed in paper roll and then in wooden case,can be customised according to customer requirements
Roughness:
≤0.2u


Availability:



Inquire

Product Description

ST52 Chrome Plated Rod Normalized (HRC 15–22): The Practical Choice for Reliable Piston Rods

ST52 chrome plated rod normalized is manufactured from ST52/E355 seamless carbon steel. It undergoes a normalizing heat treatment, which ensures a uniform grain structure and a balanced hardness level of HRC 15–22. Unlike high-hardness variants, this version prioritizes machinability, weldability, and flexibility.

The shaft is precision ground and coated with a hard chrome layer (20–30μm), creating a chrome plated shaft with excellent wear and corrosion resistance. It’s widely used as a piston rod in hydraulic cylinders, especially in agriculture, construction, marine, and automation industries.

Technical Specifications

Property	Specification
Material	ST52 / E355 Carbon Steel
Heat Treatment	Normalized
Hardness (surface)	HRC 15–22
Chrome Layer Thickness	20–30 μm
Surface Roughness	Ra ≤ 0.2 μm
Tensile Strength	≥ 600 MPa
Yield Strength	≥ 355 MPa
Outer Diameter Tolerance	ISO f7
Straightness	≤ 0.2 mm/m
Available Lengths	Up to 6 meters (custom cut available)
Usage	Piston Rod / Chrome Plated Shaft

Normalized vs. Quenched & Tempered: What’s the Difference?

Feature	Normalized (HRC 15–22)	Q&T (HRC 50–60)
Surface Hardness	Moderate (easy machining)	High (better wear resistance)
Weldability	Excellent	Poor to moderate
Machinability	High	Low (requires special tooling)
Best for	Medium-duty hydraulic systems	Heavy-duty, high-pressure systems
Cost	Lower	Higher
Chrome Plating Compatibility	Excellent	Excellent

The normalized ST52 chrome plated rod is especially favored when cylinders need additional modifications, welding, or repairs without compromising structural integrity.

Applications

Agricultural cylinder piston rods
Forklift mast and tilt cylinders
Construction machinery hydraulic systems
Waste collection truck cylinders
Scissor lifts, aerial platforms
Presses and automation actuators
Marine and port equipment

The chrome plated shaft fits seamlessly into Hydraulic Piston Rods, delivering long-lasting linear motion even in challenging environments.

Advantages for Customers

Easy to Weld and Machine – Ideal for custom cylinder builds or on-site repairs.
Strong and Durable Core – ST52 base supports reliable hydraulic pressure loads.
Surface Protection – Chrome plating prevents rust and extends service life.
Smooth Operation – Low surface roughness minimizes seal wear and fluid turbulence.
Cost-Effective – Less expensive than hardened options but highly functional.

FAQ

FAQs

What is the main benefit of a normalized chrome plated rod?

It balances moderate hardness with excellent weldability and machinability, making it perfect for general-purpose piston rod use.
Can this rod be used in high-pressure hydraulic cylinders?

Yes, but for extremely high-pressure applications, a quenched and tempered rod (HRC 50–60) might offer better wear resistance.
Is the chrome layer durable enough for outdoor use?

Yes, the 20–30 μm chrome plating protects against corrosion in humid, marine, or industrial environments.
Can I get custom diameter and length options?

Absolutely. We offer custom OD, f7 tolerance grinding, and precise length cutting to fit your design.
How is this different from a standard chrome plated shaft?

This product is optimized as a Hydraulic Piston Rod, with normalization for strength, chrome coating for wear resistance, and precision grinding for seal compatibility.