|Protective Clothing Committee Revises Cut Resistance Test Method
ASTM International Committee F23 on Protective Clothing has recently revised F 1790, Test Method for Measuring Cut Resistance of Materials Used in Protective Clothing. This standard, which is under the jurisdiction of Subcommittee F23.20 on Physical, was revised in order to improve the reliability and reproducibility of measuring cut protection performance. The following points highlight the changes in the new F 1790 standard:
Modified sample mounting procedure that specifies use of a conductive strip in between the sample material and the mounting tape.
Change in the reference distance to 20 mm for determining the rating force of a material.
Alternate calibration point selected to validate blade sharpness using a uniform reference material and a reference load of 500 g.
A universal test method for measuring the cut resistance of materials has been created that is independent of cut test apparatus and promotes harmonization of standards across the globe. This test method offers the option of using three different test apparatus and or/modifications where specific blade calibration information has been determined for each.
The revised F 1790 will be beneficial to all members of the industry fiber suppliers, apparel manufacturers, safety specialists and end users, says Portia Yarborough, a research chemist at DuPont Company in Richmond, Va., who headed the task group charged with revising the standard.
For further technical information, contact contact Portia Yarborough, DuPont, Richland, Va. (phone: 804/383-4581) or F23.20 Subcommittee Chair Elizabeth Parrish, global marketing manager, advanced fibers and compositescut protection, Honeywell, Colonial Heights, Va. (phone: 804/520-3146). F23 meets June 16-17 during the June Committee Week in Kansas City, Mo. For membership or meeting details, contact Steve Mawn, ASTM International (phone: 610/832-9726). //
Copyright 2004, ASTM International