ST52 Chrome Plated Rod Quenched And Tempered(HRC 25-32)
The ST52 Chrome Plated Rod Quenched and Tempered (HRC 25-32) is a premium-quality steel bar designed for hydraulic and pneumatic applications. Manufactured from ST52 seamless steel, it undergoes a quenching and tempering heat treatment to achieve hardness levels of HRC 25-32. Its surface is precision ground and chrome plated, providing exceptional corrosion resistance, wear resistance, and long service life. This product is widely used in hydraulic cylinder piston rods, mechanical shafts, lifting equipment, and heavy-duty machinery where strength and durability are essential.
Model:Q + T
Brand:EAST AI
Material:ST52
Length:Max. 15m
ID Tolerance:f7/f8/g6,etc
Straightness:≤0.2/1000 mm
Application:Hydraulic cylinders for mobile equipment, industrial machinery, and heavy-duty systems
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
Product Description
Advantages of ST52 Chrome Plated Rod Quenched And Tempered (HRC 25-32)
Excellent Mechanical Properties
The quenching and tempering process ensures an ideal balance of hardness, strength, and toughness.
Enhanced Corrosion Resistance
The chrome-plated finish provides strong protection against rust and pitting in harsh environments.
Wear Resistance
The hardened surface extends service life by minimizing abrasion.
High Straightness and Precision
Tight dimensional tolerances guarantee stable performance in hydraulic systems.
Reliable Fatigue Resistance
Capable of handling repetitive loading and high-pressure environments.
Versatility
Suitable for various industries including construction machinery, agricultural equipment, and lifting systems.
Production Process of ST52 Chrome Plated Rod Quenched And Tempered (HRC 25–32)
The manufacturing process follows rigorous standards to guarantee consistency and quality:
Step | Description |
Raw Material Selection | High-purity ST52 steel with excellent mechanical properties is chosen. |
Quenching & Tempering | Rods are heat-treated to achieve controlled hardness of HRC 25–32. |
Peeling & Grinding | Surface defects are removed, and dimensional accuracy is ensured. |
Polishing | Precision polishing prepares the surface for optimal chrome adhesion. |
Hard Chrome Plating | A uniform chrome coating improves wear and corrosion resistance. |
Final Inspection | Surface roughness, hardness, and straightness are tested before delivery. |
Application of ST52 Chrome Plated Rod Quenched And Tempered (HRC 25–32)
The ST52 Chrome Plated Rod Quenched And Tempered is widely used in industries requiring reliable piston rods and shafts:
Hydraulic Cylinders
Main piston rods for construction machinery, agricultural equipment, and industrial hydraulics.
Lifting Equipment
Cranes, elevators, and hoists benefit from enhanced load-bearing strength.
Earthmoving Machinery
Bulldozers, excavators, and loaders rely on toughened piston rods.
Marine Applications
Chrome layer protects against saltwater corrosion.
Industrial Automation
Hydraulic presses and production equipment require precision rods.
Mining Machinery
High resistance against abrasive environments.
ST52 Chrome Plated Rod Quenched And Tempered (HRC 25–32) Product Details
The ST52 Chrome Plated Rod Quenched And Tempered (HRC 25–32) is manufactured with precision to deliver reliable hardness, toughness, and corrosion resistance. Below are the detailed specifications:
Parameter | Specification |
Material Grade | ST52 (DIN 2391 / EN 10305) |
Heat Treatment | Quenched and Tempered |
Hardness Range | HRC 25 – 32 |
Surface Treatment | Hard Chrome Plating |
Chrome Layer Thickness | 20 – 30 μm (customizable upon request) |
Surface Roughness (Ra) | ≤ 0.2 μm |
Straightness Tolerance | ≤ 0.2 mm / 1000 mm |
Outer Diameter Range | 8 mm – 350 mm |
Length Range | Up to 8 meters (custom cut available) |
Tensile Strength | 600 – 850 MPa (depending on dimensions) |
Yield Strength | ≥ 355 MPa |
Applications | Hydraulic cylinders, construction machinery, lifting equipment, agricultural use |
Standards | DIN 2391, EN 10305, ISO 9001, GL Approval |
Factory Inventory of ST52 Chrome Plated Rod Quenched And Tempered (HRC 25–32)
To meet urgent distributor and engineering demands, our factory maintains:
Large Stock Availability
Standard diameters always in warehouse.
Custom Lengths
Cut-to-size service for immediate shipping.
Ready-to-Ship Orders
Stock rods for quick dispatch within 3–7 days.
Bulk Supply Capacity
Over 2,000 tons of monthly production output.
This guarantees that stockists and project managers never face downtime due to material shortages.
Quality Testing of ST52 Chrome Plated Rod Quenched And Tempered (HRC 25–32)
Every ST52 Chrome Plated Rod Quenched And Tempered undergoes strict testing before shipment:
Hardness Test
Ensures HRC 25–32 hardness is achieved consistently.
Salt Spray Test
Evaluates corrosion resistance of chrome plating.
Surface Roughness Test
Confirms Ra ≤ 0.2 μm for smooth hydraulic sealing.
Straightness Check
Prevents cylinder wear due to rod bending.
Ultrasonic & Eddy Current Testing
Detects internal and surface defects.
Dimensional Accuracy Inspection
Ensures compliance with ISO and DIN standards.
Certificates of ST52 Chrome Plated Rod Quenched And Tempered (HRC 25–32)
Our ST52 Chrome Plated Rod Quenched And Tempered is backed by international certifications, including:
ISO 9001:2015
Quality management system compliance.
ISO 14001:2015
Environmental management certification.
SGS / TUV / BV Testing Reports
Independent third-party inspections.
Material Test Certificates (EN 10204 3.1 / 3.2)
Traceability and chemical composition validation.
GL Approval of Material Manufacturers (AMM)
For marine and offshore industries.
These certifications give distributors and engineers confidence in long-term reliability.
