We offer premium Hard Chrome Plated Bars engineered for demanding industrial applications requiring exceptional wear resistance, corrosion protection, and surface durability. Our hard chrome bars are widely used as piston rods, shafts, and components in hydraulic, pneumatic, marine, automotive, and heavy machinery sectors.
Why Choose Our Hard Chrome Plated Bars?
- Superior Surface Hardness and Wear Resistance
The hard chrome plating provides a surface hardness typically above 850 HV, dramatically reducing wear and extending component life in high-stress, high-friction environments. - Corrosion Resistance
A dense chrome layer with thickness of at least 15 to 20 microns offers excellent resistance to corrosion, even in harsh chemical and marine environments, significantly protecting the base metal. - Exceptional Surface Finish
With surface roughness (Ra) values usually below 0.2 microns and controlled parameters to ensure smooth, uniform chromium deposits, these bars minimize friction and improve seal life in hydraulic and pneumatic systems. - High Mechanical Strength Base Material
Hard chrome bars are produced from carefully selected steels such as low carbon microalloyed grades (e.g., Cromax 280X) or 1045/4140 steels, providing high tensile and yield strength, excellent machinability, and weldability. - Precision Tolerances and Straightness
Bars meet stringent ISO tolerances (e.g., ISO f7 for diameter), with straightness controlled within tight limits (e.g., 0.2 mm per meter), essential for reliable piston rod applications. - Induction Hardening Option
Many grades are available with induction hardened cores under the chrome layer, achieving surface hardness zones around 50 HRC for enhanced impact resistance and structural durability.
Typical Specifications
| Property | Typical Range/Value |
| Chrome Layer Thickness | Minimum 15 to 20 microns |
| Surface Hardness (Chromium Layer) | ≥ 850 HV |
| Surface Roughness (Ra) | ≤ 0.2 microns |
| Base Material Yield Strength | 75,000 to 100,000 psi (depending on steel) |
| Diameter Tolerance | ISO f7 (tight tolerance) |
| Straightness Deviation | Max 0.2 mm per meter |
| Available Grades | Low carbon, 1045, 4140, 20MnV6, microalloy steels |
| Induction Hardened Surface Hardness | 45–55 HRC (optional) |
Common Applications
- Hydraulic and pneumatic cylinder piston rods
- Agricultural machinery and construction equipment
- Marine and offshore components exposed to corrosive conditions
- Industrial machinery shafts and spindles
- Lifting equipment components and heavy-duty mechanical assemblies
Benefits of Using Our Hard Chrome Plated Bars
- Extends service life through high wear and corrosion resistance
- Improves system reliability and reduces maintenance downtime
- Enables lighter designs with downsizing possibilities due to high strength
- Compatible with standard machining, welding, and fabrication processes
- Consistent quality verified through rigorous in-house and independent lab testing
Contact us today to inquire about our hard chrome plated bars available in various sizes, grades, and custom finishes. Let our expert team provide you with durable, high-performance bars tailored to the specific needs of your hydraulic, pneumatic, or industrial applications.