Chrome Piston Rod Overview

This HRC40-45 chrome piston rod is specifically engineered for gas spring applications, featuring a diameter of 8mm and length of 700mm. Manufactured with precision QPQ surface treatment, this chrome piston rod delivers exceptional wear resistance, corrosion protection, and long service life for demanding gas spring operations.

Features OF Chrome Piston Rod

1. QPQ Surface Treatment Technology

• Enhanced Wear Resistance: QPQ treatment creates a dense compound layer of iron nitride, providing 2x higher wear resistance compared to traditional hard chrome plating

• Superior Corrosion Protection: Passes salt spray test up to 48 hours (ASTM B117 standard), offering 20x better corrosion resistance than conventional chrome plating

• Environmentally Friendly: QPQ process eliminates hexavalent chromium pollution, meeting international environmental standards

2. Precision Manufacturing

• Dimensional Accuracy: ISO f7 tolerance ensures perfect fit with gas spring cylinders

• Surface Quality: Ra ≤0.2μm surface roughness minimizes friction and wear

• Straightness Control: ≤0.2mm/m straightness guarantees smooth operation and extended service life

3. Material Excellence

• CK45 Carbon Steel: Medium carbon steel with excellent mechanical properties and processing characteristics

• Chemical Composition: C 0.42-0.50%, Mn 0.50-0.80%, Si 0.17-0.37%, S ≤0.035%, P ≤0.035%

• Heat Treatment: Quenched and tempered to achieve optimal hardness and toughness

Quality Assurance

• 100% Dimensional Inspection: Each chrome piston rod undergoes comprehensive dimensional verification

• Surface Hardness Testing: HRC40-45 hardness verified through Rockwell testing

• Salt Spray Testing: 48-hour salt spray test to validate corrosion resistance

• Straightness Verification: Laser measurement ensures ≤0.2mm/m straightness

• ISO 9001/SGS Certified: Manufacturing process follows ISO 9001 quality management system

Customization Options

• Length: Custom chrome piston rod lengths from 10mm to 700mm

• Diameter: Available in Ø6mm to Ø30mm

• Surface Finish: QPQ black finish, hard chrome plating, or induction hardening

• End Treatments: Threaded ends, special machining, or custom fittings

• Material Grades: CK45, 42CrMo4, 20MnV6, 40Cr, stainless steel

Why choose us?

• Specialized for Gas Springs: Chrome piston rod specifically engineered for gas spring applications, not general hydraulic use

• Long Service Life: 100,000+ cycles guaranteed with proper installation

• Competitive Pricing: Direct factory pricing with no middleman markup