ASTM B117 Neutral Salt Fog Testing: 5% NaCl Solution & 480h Standards
Engineering Overview: Engineering guide on ASTM B117 and ISO 9227 Neutral Salt Spray (NSS) chamber calibration, temperature control, and corrosion inspection criteria.
Technical & Engineering Specifications
| Chamber Temp | 35°C (95°F) Continuous Fog |
|---|---|
| Duration Tiers | 96h (Grade 3), 240h (Grade 4), 480h+ (Grade 5) |
| Standard Reference | ASTM B117 / ISO 9227 / EN 1670 |
| Chamber Concentration | 5% NaCl Salt Fog Solution |
Accelerated Corrosion Chamber Protocol
ASTM B117 is the international standard for testing corrosion resistance across plated and PVD-finished lock cylinders.
Chamber Parameters
- Salt Solution: 5% +/- 1% sodium chloride (NaCl) in deionized water (pH 6.5–7.2).
- Chamber Temperature: Continuous $35^\circ ext{C} \pm 2^\circ ext{C}$.
- Fog Dispersion: 1.0 to 2.0 mL/hr per $80 ext{ cm}^2$ collector.
- Inspection: Evaluated for pitting, blistering, and operational torque post-exposure.
Frequently Asked Engineering & Selection Questions
Q1: What standard or test protocol is defined here?
Engineering guide on ASTM B117 and ISO 9227 Neutral Salt Spray (NSS) chamber calibration, temperature control, and corrosion inspection criteria.