Selecting the Right Material for Cylinder Piston Rods
The cylinder piston rod is a crucial component in hydraulic systems, serving not only as the force transmitter from the cylinder’s piston but also as the primary interface between the cylinder and the machinery it operates. To ensure optimal performance and durability, selecting the appropriate material for the piston rod is essential.
Common Materials for Hydraulic Cylinder Piston Rods
The most commonly used materials for cylinder piston rods are carbon steel and stainless steel. These materials offer the necessary strength and durability required for high-pressure environments. Among the popular choices are:（CK45, SAE1045, 4140, 4340, SAE1518, SAE4145, JIS45C, 40Cr, 20MnV6, 42CrMo, SS431, SS430, Stainless Steel 304/316/2205. These materials are typically coated with Hard Chrome Plating (HCP) to enhance their performance. Chrome plating provides robust, long-term protection against corrosion while also offering a smooth, polished finish. This finish is critical in optimizing seal performance by providing sufficient clearance for lubrication between the rod and the seal, minimizing friction and preventing leakage.
Hard Chrome Plating for Hydraulic Cylinder Rods
The chrome plating applied to hydraulic cylinder rods, known as “Hard Chrome,” is characterized by its dull silver or grey color and exceptionally hard surface. This hard chrome coating is essential for enhancing the wear resistance and lifespan of the piston rod in demanding applications.
Mechanical Properties
| Material | T.S N/MM2 | Y.S N/MM2 | E%(MIN) | CHARPY | CONDITION |
| CK45 | 610 | 355 | 15 | >41J | NORMALIZE |
| CK45 | 800 | 630 | 20 | >41J | Q+T |
| ST52 | 500 | 355 | 22 | NORMALIZE | |
| 20MnV6 | 750 | 590 | >40J | NORMALIZE | |
| 42CrMo4 | 980 | 850 | 14 | >47J | Q+T |
| 40Cr | 1000 | 800 | 10 | Q+T |
Delivery Conditions
Cylinder piston rods can be supplied in various conditions to meet specific application requirements: Normal, Quenched & Tempered (Q+T), Induction Hardened, Q+T Induction Hardened, Additional Products We Offer.
We also specialize in producing a wide range of hydraulic cylinder rods
Hard Chrome Plated Rods
Quenched & Tempered Chrome Plated Rods
Induction Hardened Chrome Plated Rods
Q+T Induction Hardened Chrome Plated Rods
Stainless Steel Chrome Plated Rods (including SS304, SS316, SS430, SS431, 2205, 17-4PH, etc.)
Forged Chrome Plated Rods
For more detailed information on hydraulic cylinder rod materials or to discuss specific requirements, please contact us:
Email: jeff@east-ai.cn
Tel, WhatsApp & WeChat: +8618306172624
