Product Introduction
Hard Chrome Plated Rod Shaft is a steel rod with a hard chrome plated surface. It's made by precision grinding high-quality steel, then coated with a thick, hard chromium layer. This shaft has high hardness and excellent wear resistance, working stably in harsh conditions for long. Widely used in industrial machinery and automation equipment, it ensures precise operation and durability.
Product Advantages
Ultra-High Surface Hardness & Wear Resistance
The Hard Chrome Plated Rod Shaft features a uniform hard chrome layer with a hardness exceeding 70 HRC, far surpassing standard steel (20-25 HRC). This extreme hardness resists metal friction, particle abrasion, and mechanical wear, maintaining a smooth surface even under high-load or repetitive motion, significantly extending service life.
Enhanced Corrosion & Rust Resistance
Unlike standard metal rods that corrode in moisture or chemicals, the Hard Chrome Plated Rod Shaft has a dense chromium layer (8,700 kg/m³) that blocks water, acids, and corrosive agents. It withstands over 1,000 hours in salt spray tests, making it ideal for marine and chemical machinery.
Low Friction & Seal Compatibility
With a surface roughness (Ra) of 0.1-0.4μm, the Hard Chrome Plated Rod Shaft reduces friction against seals (rubber/polyurethane), lowering energy consumption and preventing premature seal degradation, ensuring long-term hydraulic system stability.
Wide Temperature Range Performance
The chrome layer's thermal expansion matches steel, preventing peeling or warping from -40°C to 200°C. This allows reliable use in extreme cold or high-heat applications like industrial furnaces, with performance variation under 3%.
Reduced Maintenance Costs
The Hard Chrome Plated Rod Shaft lasts 8-10 years (vs. 3-5 years for standard rods), cutting replacement frequency and downtime, lowering total maintenance costs by over 40%.
Technical Specification
|
Diameters |
6-300mm |
|
Length |
100mm-1200mm |
|
Steel grade |
DIN CK45, JIS 45C, ASTM 1045, SAE 1045, AISI 1045 |
|
Tolerance |
ISO f7 |
|
Chrome thickness |
20μm(min) |
|
Hardness of the chrome layer |
850H V(min) |
|
Roughness |
Ra 0.2μm(max) |
|
Straightness |
0.2/1000mm |
|
Mechanical Properties(ck45) |
Yield strength ≥ 20Mpa |
Chemical Composition
|
Material |
C% |
Mn% |
Si% |
S% |
P% |
V% |
Cr% |
|
Ck45 |
0.42-0.50 |
0.50-0.80 |
0.17-0.37 |
≤0.035 |
≤0.035 |
≤0.25 |
|
|
ST52 |
≤0.22 |
≤1.6 |
≤0.55 |
≤0.04 |
≤0.04 |
0.02-0.15 |
|
|
20MnV6 |
0.17-0.24 |
1.30-1.70 |
0.10-0.50 |
≤0.035 |
≤0.035 |
0.10-0.20 |
≤0.30 |
|
42CrMo4 |
0.38-0.45 |
0.50-0.80 |
0.17-0.37 |
≤0.035 |
≤0.035 |
0.07-0.12 |
0.90-1.20 |
|
40Cr |
0.37-0.45 |
0.50-0.80 |
0.17-0.37 |
≤0.035 |
≤0.035 |
0.80-1.10 |
PACKAGING & SHIPPING
|
Package |
Standard export seaworthy package,suit for all kinds of transport, or as required. |
|
Water-proof Paper + Edge protection + Wooden Pallets |
|
|
Bulk Size |
Any size |
|
Loading Port |
Shanghai / Ningbo |
|
Container |
1 x 20ft container load Max. 25 Ton, Max. length 5.8m |
|
1 x 40ft container load Max. 30 Ton, Max. Length 11.8m |
|
|
Delivery Time |
About 2 weeks or according to the order's quantity |
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