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A S T M R A T I N G S
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ASTM International Standards for Safety Footwear
On August 11th 2011, ASTM released its new F2412 and F2413 standards and methods for
testing. Included with the changes was the addition of F2892. This standard specification method allows
manufacturers to test and label non-safety toe footwear that meets standards that previously were only part
of the safety toe footwear standard and testing, such as electrical hazard (EH) or static-dissipating (SD)
footwear. In the past, footwear manufacturers provided this type of footwear but were unable to label
it as meeting ASTM standards.
These changes bring some consolidation and removal of less used standards such
as I/50 C/50 classifications for impact and compression, while aligning further with CSA
and EN standards and testing. One of the revisions changes the EH (Electrical Hazard) testing
from 14,000 volts to 18,000 volts while lowering the leakage allowed to 1 milliampfrom 3 milliamps,
aligning it with the CSA Z195-02 Electrical Shock Resistant standard (ESR).
F2412-11 defines the test methods that measure the resistance of
protective footwear to a variety of hazards that can potentially result in injury in the workplace.
F2413-11 defines the minimum performance requirements protective footwear
must meet to resist a variety of hazards that can potentially result in injury in the workplace,
IMPACT (I/75) resistance for the toe area of footwear.
Class I/75 footwear retains a .500 inch (1/2 inch) for men’s and .468 inch (15/32 inch) for women’s or greater
clearance after a nominal impact of 75 foot-pounds (101.7J), i.e., a 50 pound weight dropped from 23.25 inches reaching
117.9 ± 2.4 inches per second velocity at impact.
COMPRESSION (C/75) resistance for the toe area of footwear.
Class C/75 footwear retains a .500 inch (1/2 inch) after compression of 2500 lbs. (11,121 N) or greater.
METATARSAL (M/75) [impact and compression] resistance for the area of footwear.
Class Mt/75 footwear retains a 1.0 inch clearance for men’s and 15/32 inch clearance for women’s,
after a nominal impact of 75 foot pounds (101.7J), i.e., a 50 lb. weight dropped from 23.25 inches reaching 117.9 ± 2.4 inches
per second velocity at impact 3.5 inches in from the toe of the footwear (3.375 inches on womens).
ELECTRIC HAZARD (EH) resistance of the footwear.
EH constructed or manufactured footwear with electric shock resisting soles and heels capable of withstanding
an application of 18,000 volts (root mean square (RMS) value) at 60 Hz for 1 minute with no current flow or leakage current
in excess of 3.0 milliamperes under dry conditions.
STATIC DISSIPATIVE (SD) properties of the footwear.
SD constructed or manufactured footwear will provide for a resistance of between 106 (1 meg ohm) and
108 (100 meg ohms) resistance when 50 volts are applied via an electrode to the hand of a person wearing the SD test sample
on a conductive ground plate.
PUNCTURE RESISTANCE (PR) properties of footwear bottoms.
PR constructed or manufactured footwear with sole and heel area capable of withstanding a force load of less than 1200N (270 lbf).
Applies to: soft toe, or non-safety toe footwear.
A LABEL INSIDE THE BOOT CONFIRMS RATINGS STANDARDS TESTED.
ASTM now requires footwear manufacturers to place an oval on the inside label instead of
the rectangle used in safety toe footwear that will include ASTM F2892-11 and any standard feature
designation that the footwear meets, ie. EH = electrical hazard protection (18Kv), SD = static dissipating
or PR = puncture resistant. As a customer, you will now know that your Thorogood soft toe footwear
meets safety standards set by ASTM.
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