Non Destructive Testing // Magnetic Particles

Grey Powder No. 6

Grey Magnetic Dry Dusting Powder

Particles are easily agitated, fast acting and produce defined indications
Particles meet specification requirements
Can be used with both stationary and portable magnetic test equipment
Can be used at elevated temperatures
The grey colour gives a clear contrasting colour to backgrounds

Technical Data Sheet

Description

DUBL-CHEK Grey Powder No. 6 is a highly refined non-fluorescent grey magnetic powder used for dry method magnetic particle inspection. It is designed to be used in visible light to reveal discontinuities. The particles respond to magnetic leakage fields created by discontinuities in ferromagnetic material. Particles rapidly collect at leakage fields producing grey indications.

Specifications Compliance

• ASTM-E1444
• AMS 3040
• MIL-STD-271
• NAVSEA 250-1500-1
• NTR-1

Physical Properties

Particle Colour:	Grey
Specific Gravity:	2.5 – 3.0 g/ml
Particle Size:	15 – 160 µm (average 75µm)
Sensitivity:	8 lines on an AISI Ketos tool steel ring
Temperature Limits:	427ºC

Directions

1. Clean the test surface and allow it to dry.
2. Apply Blue Powder No. 6 to the part with a powder spray bulb or powder blower.
3. Can be used with both stationary and portable magnetic test equipment.
4. Can be used at elevated temperatures.
5. The grey colour gives a clear contrasting colour to backgrounds.