ASTM F1959/F1959M-06
(Test Method)Standard Test Method for Determining the Arc Rating of Materials for Clothing
Standard Test Method for Determining the Arc Rating of Materials for Clothing
SCOPE
1.1 This test method is used to measure the arc rating of materials intended for use as flame resistant clothing for workers exposed to electric arcs that would generate heat flux rates from 84 to 25 120 kW/m 2 [2 to 600 cal/cm2s].
1.2 This test method will measure the arc rating of materials which meet the following requirements: less than 150 mm [6 in.] char length and less than 2 s afterflame when tested in accordance with Test Method D 6413.
1.2.1 It is not the intent of this test method to evaluate non flame-resistant materials except where used as under layers in multiple-layer specimens.
1.3 The materials used in this test method are in the form of flat specimens.
1.4 This test method shall be used to measure and describe the properties of materials, products, or assemblies in response to convective and radiant energy generated by an electric arc under controlled laboratory conditions.
1.5 The values stated in SI units shall be regarded as standard except as noted. Within the text, alternate units are shown in brackets. The values stated in each system may not be exact equivalents therefore alternate systems must be used independently of the other. Combining values from the systems described in the text may result in nonconformance with the method.
1.6 This test method does not apply to electrical contact or electrical shock hazards.
1.7 This standard shall not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use. For specific precautions, see Section .
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Designation:F1959/F1959M–06
Standard Test Method for
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Determining the Arc Rating of Materials for Clothing
This standard is issued under the fixed designation F1959/F1959M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope bility of regulatory requirements prior to use. For specific
precautions, see Section 7.
1.1 This test method is used to measure the arc rating of
materials intended for use as flame resistant clothing for
2. Referenced Documents
workers exposed to electric arcs that would generate heat flux
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2 2 2.1 ASTM Standards:
rates from 84 to 25 120 kW/m [2 to 600 cal/cm s].
D123 Terminology Relating to Textiles
1.2 Thistestmethodwillmeasurethearcratingofmaterials
D1776 Practice for Conditioning and Testing Textiles
which meet the following requirements: less than 150 mm [6
D4391 Terminology Relating to The Burning Behavior of
in.] char length and less than 2 s afterflame when tested in
Textiles
accordance with Test Method D6413.
D6413 Test Method for Flame Resistance of Textiles (Ver-
1.2.1 It is not the intent of this test method to evaluate non
tical Test)
flame-resistant materials except where used as under layers in
E457 TestMethodforMeasuringHeat-TransferRateUsing
multiple-layer specimens.
a Thermal Capacitance (Slug) Calorimeter
1.3 Thematerialsusedinthistestmethodareintheformof
F1494 Terminology Relating to Protective Clothing
flat specimens.
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2.2 ANSI/IEEE Standard:
1.4 This test method shall be used to measure and describe
Standard Dictionary of Electrical and Electronics Terms
thepropertiesofmaterials,products,orassembliesinresponse
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2.3 AATCC Standard:
to convective and radiant energy generated by an electric arc
AATCC Method 135-2001 Dimensional Changes in Auto-
under controlled laboratory conditions.
matic Home Laundering of Woven and Knit Fabrics
1.5 The values stated in SI units shall be regarded as
standard except as noted. Within the text, alternate units are
3. Terminology
showninbrackets.Thevaluesstatedineachsystemmaynotbe
3.1 Definitions:
exact equivalents therefore alternate systems must be used
3.1.1 ablation, n—in electrical arc testing, a physical re-
independentlyoftheother.Combiningvaluesfromthesystems
sponseevidencedbysignificanterosionortheformationofone
described in the text may result in nonconformance with the
or more large holes in a layer of a multilayer system.
method.
3.1.1.1 Discussion—Anylayerinaspecimen(otherthanthe
1.6 This test method does not apply to electrical contact or
innermost layer) is considered to exhibit ablation when the
electrical shock hazards.
2 2
materialremovaloranyholeisatleast16cm [2.5in. ]inarea
1.7 This standard shall not be used to describe or appraise
or at least 8 cm [3.1 in.] in length in any dimension. Single
the fire hazard or fire risk of materials, products, or assemblies
threadsacrosstheopeningorholedonotreducethesizeofthe
under actual fire conditions. However, results of this test may
hole for the purposes of this test method. Ablation in one or
be used as elements of a fire assessment which takes into
more layers of material in a mulitlayer system may remove
account all of the factors which are pertinent to an assessment
energy from the specimen.
of the fire hazard of a particular end use.
3.1.2 ablationresponseenergy(E ),n—theincidentenergy
ab
1.8 This standard does not purport to address all of the
on a multilayer system that results in a 50 % probability of the
safety concerns, if any, associated with its use. It is the
physical response of ablation.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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This test method is under the jurisdiction of ASTM Committee F18 on Standards volume information, refer to the standard’s Document Summary page on
Electrical Protective Equipment for Workers and is the direct responsibility of the ASTM website.
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Subcommittee F18.65 on Wearing Apparel. Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
Current edition approved Nov. 1, 2006. Published December 2006. Originally 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331.
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approved in 1997. Last previous edition approved in 2005 as F 1959/ Technical Manual of the American Association of Textile Chemists and
F1959M–05a. Colorists.
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