Magnaflux 7HF Oil-Based Visible Magnetic Particle Suspension
7HF is a highly-sensitive oil-based magnetic particle suspension aerosol for nonfluorescent (visible) wet method magnetic particle testing. 7HF provides clear, strong indications and is ideal for locating fine and medium discontinuities on finished parts. It is ideal for field testing, spot inspections and places where bulk processing is impractical.
7HF is often used with WCP-2 white contrast paint to improve contrast and inspection sensitivity. This process is ideal for remote inspections of tubing, piping, and large structures.
Maximize indication detection
- Find indications of all shapes and sizes thanks to the smallest particle on the market
- Heavy buildup of highly magnetic particles around all leakage fields make for heavy-contrast indications, especially when used with WCP-2 white contrast paint
- Inspect in all conditions without the need for darkness or UV lights
- The visible particles come in a convenient, aerosol format to be easily carried and used in the field
- Inspect a wide range of components without fear of corrosion or specification non-conformance
- Clear indications under visible light
- Heavy particle buildup
- Great particle mobility
- Protects parts and equipment against corrosion
- Broad spray pattern provides even surface coverage over large areas
- Superior surface wetting
- Very small particle size
- Works in visible light
- Oil-based formula
- Very low toxicity
- Low odor
Specifications
- AMS 3043
- ASTM E709
- ASTM E1444
- ASME BPVC
- Boeing PS-21201
- ISO 9934
- MIL-STD-2132
- NAVSEA 250-1500-1
- NAVSEA T9074-AS-GIB-010/271
Applications
Defect location: surface and slightly subsurface
| Ideal for | Defect Examples |
|---|---|
| Detecting fine and medium discontinuities | Inclusions |
| Field testing | Seams |
| Spot inspections | Shrink cracks |
| In-service inspections | Tears |
| Machined parts | Laps |
| Light surfaces | Flakes |
| Difficult to reach areas | Welding defects |
| Grinding cracks | |
| Quenching cracks | |
| Fatigue cracks |
Use Recommendations
NDT Method: Magnetic Particle Testing, Nonfluorescent / Visible, Wet Method
Suspension Vehicle: Carrier II (petroleum distillate)
Required Equipment: Magnetizing device
Temperature Range: 55 to 120°F / 13 to 49°C