72h SGS Neutral Salt Spray Test of Ahcell Ball Roller Transfer Unit

Quality verification matters when selecting ball transfer units for humid, coastal, or chemically exposed environments. Ahcell recently submitted its stainless steel ball transfer units to SGS for independent neutral salt spray testing — and the results confirm what engineers need: zero red rust after 72 consecutive hours.

Test Overview: ISO 9227 Neutral Salt Spray (NSS)

The test was conducted at SGS laboratory under report number WHIN2605000783ML01_EN, issued on May 11, 2026. The procedure followed ISO 9227:2017, the internationally recognized standard for evaluating corrosion resistance of metallic materials and coatings.

Key test parameters:

• NaCl concentration: (50±5) g/L
• Chamber temperature: (35±2) °C
• Salt solution collection rate: 1.0–2.0 mL/(80cm²·h)
• pH of collected solution at 25°C: 6.5–7.2

Results: No Red Rust at 24h, 48h, and 72h

Three inspection checkpoints were set during the 72-hour continuous exposure:

Exposure Time	Appearance
24 hours	No red rust observed
48 hours	No red rust observed
72 hours	No red rust observed

After each checkpoint, specimens were allowed to dry at room temperature before gentle rinsing with running water at 40°C, followed by air drying — per standard procedure. The surface of every sample remained free of red rust throughout the entire 72-hour exposure.

What This Means for Your Application

The 72-hour NSS result is a strong indicator of long-term corrosion performance. In practical terms, ball transfer units that withstand 72 hours of continuous salt spray typically perform reliably for years in real-world conditions such as:

• Food processing lines — frequent washdown cycles with water and cleaning agents
• Marine and coastal logistics — salt-laden air in port and dockside conveyors
• Chemical and pharmaceutical plants — exposure to corrosive vapors and humidity
• Outdoor material handling — rain, humidity, and temperature cycling

Ahcell Quality Commitment

This SGS test is part of Ahcell's ongoing quality assurance program. Every batch of our KSM stainless steel series ball transfer units undergoes strict incoming material inspection and surface treatment verification before shipment. The 72h NSS certification provides our customers with third-party validated proof that Ahcell ball rollers meet the durability demands of harsh industrial environments.

For technical data sheets or to request test reports for specific models, contact our engineering team at sales@ahcell.com.