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THOROGOOD
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CAROLINA
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KEEN
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A S T M R A T I N G S
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We welcome your feedback concerning TheBootPros products, services and policies.
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 PREFACE
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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) ootwear. 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 milliamp from 3 milliamps, aligning it with the CSA Z195-02 Electrical Shock Resistant standard (ESR). F2412-11 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 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, including: IMPACT RESISTANCE (I/75) ...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 RESISTANCE (C/75) ...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 IMPACT and COMPRESSION (M/75) ...for the metatarsal 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 RESISTANCE (EH) ...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 midsole. PR constructed or manufactured footwear with sole and heel area capable of withstanding a force load of less than 1200N (270 lbf) on a conductive ground plate. F2892-11 F2892-11 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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