Penetrant
Industrial Penetrant Solutions for Precision Inspection
Penetrant testing remains one of the most reliable methods for detecting surface-breaking defects in non-porous materials. Our advanced penetrant solutions deliver superior performance across aerospace, automotive, and manufacturing industries.
Key Features of Our Penetrant Products
- High sensitivity for detecting minute surface defects
- Fast dwell time with excellent surface wetting characteristics
- Environmentally friendly formulations available
- Compatible with all common inspection methods (visible & fluorescent)
- Stable shelf life of 5+ years when stored properly
| Product Code | Type | Sensitivity | Dwell Time | Removal Method |
|---|---|---|---|---|
| PT-100 | Fluorescent Water-Washable | Level 4 | 5-20 minutes | Water spray |
| PT-200 | Visible Post-Emulsified | Level 3 | 10-30 minutes | Solvent wipe |
| PT-300 | Fluorescent Solvent-Removable | Level 4 | 5-15 minutes | Solvent clean |
Penetrant Inspection Process Overview
- Surface preparation (cleaning and degreasing)
- Penetrant application (spray, brush, or immersion)
- Dwell time (allow penetrant to enter defects)
- Excess penetrant removal
- Developer application
- Inspection under appropriate lighting
- Final cleaning
Penetrant Testing FAQ
What is the difference between visible and fluorescent penetrants?
Visible penetrants contain red dye that can be seen under white light, while fluorescent penetrants require ultraviolet (black) light to reveal indications. Fluorescent penetrants generally offer higher sensitivity for detecting smaller discontinuities.
How do I choose the right penetrant sensitivity level?
Sensitivity levels range from 1/2 (lowest) to 4 (highest). Select based on your application requirements - higher sensitivity detects smaller flaws but may produce more background. Critical aerospace components typically require Level 3 or 4 penetrants.
Can penetrant testing be used on porous materials?
No, standard penetrant testing only works on non-porous surfaces. The penetrant would seep into porous materials rather than remaining in surface defects. For porous materials, other NDT methods like X-ray or ultrasound are more appropriate.
Technical Specifications
| Property | Test Method | PT-100 | PT-200 | PT-300 |
|---|---|---|---|---|
| Flash Point | ASTM D56 | >93°C | >100°C | >60°C |
| Viscosity @25°C | ASTM D445 | 5.2 cSt | 4.8 cSt | 3.9 cSt |
| Density | ASTM D1298 | 0.87 g/ml | 0.85 g/ml | 0.82 g/ml |
Our penetrant solutions comply with major industry standards including AMS 2644, ASTM E1417, and ISO 3452-1. Each batch undergoes rigorous quality control testing to ensure consistent performance.