Sir-Chem® Dry Powder 91

Product Description

Sir-Chem® Dry Powder 91 is a highly refined and bonded nonfluorescent gray magnetic powder used for dry method magnetic particle inspection. It is designed to be used in visible light to reveal discontinuities on fabricated components or weldments such as bridges, drill pipes, large tanks and machinery. This specially bonded iron based powder is designed to minimize dust and provide clear, sharp discontinuities. The decrease in dust allows for a safer inspection area.

#2661 – 10 pounds/jar
#2665 – 50 pounds/pail

Physical Characteristics
Gray powder, odorless.

Particle Certification
Particles meet all relevant specifications, including but not limited to ASTM E 1444, AMS 3040, MIL-STD-271, NAVSEA 250-1500-1, NTR-1E. Certification is included with each shipment.

Particle Color

Average Particle Size
75 µm

AMS Standard

SAE Sensitivity*

Temperature Range
250°F (120°C)

*Representative of the number of lines shown on a tool steel ring as defined in SAE AS5282.

Related Product Information:
Safety Data Sheet
Technical Bulletin 180
Product Data Sheet