HM-3A Fluorescent Penetrant

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HM-3A Fluorescent Penetrant quantity

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Description

HM-3A Properties

HM-3A is a water washable penetrant designed for detecting surface defects with medium sensitivity. This product is appreciated by aeronautics due to its intrinsic characteristics. A Type 1 Method A Level 2 pre-emulsified fluorescent penetrant per AMS 2644 and ISO 3452-2, highly loaded with optical brightener: very bright indication, green-yellow colourimetry.

Application:
Apply HM-3A only to clean, dry surfaces by spraying, flowing, brushing or dipping.

Dwell-Time:
A 10 minute dwell time is suggested, although in many cases five minutes will suffice. When particularly tight cracks are suspected, or the part is especially critical, the dwell time may be extended to 30 minutes, or longer. Do not soak the part. To increase sensitivity, as well as conserve material, allow the penetrant to drain
from the part surface back into the penetrant tank.

Removal:
Use a quick, ambient temperature water wash at tap pressure to rinse HM-3A from the part surface. To avoid washing entrapped penetrant from surface flaws, do not use high water pressures and temperatures, or prolonged washing and scrubbing.

Drying:
A recirculating oven set no higher than 80°C is suggested. Leave part in oven just long enough to evaporate surface moisture. Drying is improved by using pressurized air to disperse and remove as much excess water as possible before placing part in oven.

Developing:
HM-3A is self-developing. Nevertheless it is recommended to use a developer as listed above.

Inspection:
Inspect parts under appropriate UV-A radiation (mini 1000 μW/cm2 and if possible higher or equal to 1500 μW/cm2) and dimmed visible light (< 20lux), in accordance with ISO 3059.

Technical Characteristics

Appearance	Green Liquid
Fluorescence	Green-Yellow
Flash Point	> 93ºC
Viscosity	6,6mm²/s ± 10% at 40ºC
Temperature Range	0ºC – 50ºC

Available as Case of 12x300ml Aerosol, 25L or 200L.

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Additional information

Option	200L, 25L, Case of 12x300ml Aerosol