Hard Chrome Plated Steel Bars For Hydraulics
Hard chrome plated steel bars (induction hardened) for hydraulic pistons and rods.
Hard Chrome Plated Steel Bars For Hydraulics
Hard chrome plated steel bars (induction hardened) for hydraulic pistons and rods. 4140/42crmo4 material with 20-50 μm chrome layer. sizes od 12-250 mm, length up to 8m. superior wear resistance, low friction, and corrosion protection.
Chrome bars are round steel rods with a hard chrome plating on the surface, typically induction hardened to HRC 50-60. The chrome layer provides exceptional wear resistance, low coefficient of friction, and corrosion protection, while the core steel offers high tensile strength and toughness.
Commonly used as piston rods in hydraulic cylinders, linear guides, and rams where smooth, durable motion is critical. The plating thickness (20-50 μm) ensures long life under high loads and harsh conditions.
| Parameter | Specification |
|---|---|
| Base Material | 4140 / 42CrMo4 (EN 10083) |
| Hardening | Induction hardened to HRC 50-60 (core) |
| Chrome Thickness | 20-50 μm (standard; custom up to 100 μm) |
| Surface Hardness | HRC 58-65 |
| Plating Type | Hard chrome (electrolytic) |
| Property | Value |
|---|---|
| Tensile Strength | 850-1000 MPa |
| Yield Strength | 650-800 MPa |
| Elongation | ≥12% |
| Hardness (Core) | HRC 28-34 |
| Hardness (Surface) | HRC 58-65 |
| Parameter | Range |
|---|---|
| Outside Diameter (OD) | 12–250 mm |
| Length | Up to 8 m (custom) |
| Diameter Tolerance | h8 (ISO 286) |
| Straightness | ≤0.2 mm/m |
| Surface Roughness | Ra 0.2-0.4 μm |
