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 7.

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14-Nov-2006
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ASTM F1959/F1959M-06a - Standard Test Method for Determining the Arc Rating of Materials for Clothing
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:F1959/F1959M–06a
Standard Test Method for
1
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 priate safety and health practices and determine the applica-
bility of regulatory requirements prior to use. For specific
1.1 This test method is used to measure the arc rating of
precautions, see Section 7.
materials intended for use as flame resistant clothing for
workers exposed to electric arcs that would generate heat flux
2. Referenced Documents
2 2
rates from 84 to 25 120 kW/m [2 to 600 cal/cm s].
2
2.1 ASTM Standards:
1.2 Thistestmethodwillmeasurethearcratingofmaterials
D123 Terminology Relating to Textiles
which meet the following requirements: less than 150 mm [6
D1776 Practice for Conditioning and Testing Textiles
in.] char length and less than 2 s afterflame when tested in
D4391 Terminology Relating to The Burning Behavior of
accordance with Test Method D6413.
Textiles
1.2.1 It is not the intent of this test method to evaluate non
D6413 Test Method for Flame Resistance of Textiles (Ver-
flame-resistant materials except where used as under layers in
tical Test)
multiple-layer specimens.
E457 TestMethodforMeasuringHeat-TransferRateUsing
1.3 Thematerialsusedinthistestmethodareintheformof
a Thermal Capacitance (Slug) Calorimeter
flat specimens.
F1494 Terminology Relating to Protective Clothing
1.4 This test method shall be used to measure and describe
3
2.2 ANSI/IEEE Standard:
thepropertiesofmaterials,products,orassembliesinresponse
Standard Dictionary of Electrical and Electronics Terms
to convective and radiant energy generated by an electric arc
4
2.3 AATCC Standard:
under controlled laboratory conditions.
AATCC Method 135-2001 Dimensional Changes in Auto-
1.5 The values stated in SI units shall be regarded as
matic Home Laundering of Woven and Knit Fabrics
standard except as noted. Within the text, alternate units are
showninbrackets.Thevaluesstatedineachsystemmaynotbe
3. Terminology
exact equivalents therefore alternate systems must be used
3.1 Definitions:
independentlyoftheother.Combiningvaluesfromthesystems
3.1.1 ablation, n—in electrical arc testing, a physical re-
described in the text may result in nonconformance with the
sponseevidencedbysignificanterosionortheformationofone
method.
or more large holes in a layer of a multilayer system.
1.6 This test method does not apply to electrical contact or
3.1.1.1 Discussion—Anylayerinaspecimen(otherthanthe
electrical shock hazards.
innermost layer) is considered to exhibit ablation when the
1.7 This standard shall not be used to describe or appraise
2 2
materialremovaloranyholeisatleast16cm [2.5in. ]inarea
the fire hazard or fire risk of materials, products, or assemblies
or at least 8 cm [3.1 in.] in length in any dimension. Single
under actual fire conditions. However, results of this test may
threadsacrosstheopeningorholedonotreducethesizeofthe
be used as elements of a fire assessment which takes into
hole for the purposes of this test method. Ablation in one or
account all of the factors which are pertinent to an assessment
more layers of material in a mulitlayer system may remove
of the fire hazard of a particular end use.
energy from the specimen. (See 11.2.7.)
1.8 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 appro-
2
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
Standards volume information, refer to the standard’s Document Summary page on
1
This test method is under the jurisdiction of ASTM Committee F18 on the ASTM website.
3
Electrical Protective Equipment for Workers and is the direct responsibility of Available from Institute of Electrical and Electronics Engineers, Inc. (IEEE),
Subcommittee F18.65 on Wearing Apparel. 445 Hoes Ln., P.O. Box 1331, Piscataway, NJ 08854-1331.
4
Current edition approved Nov. 15, 2006. Published January 2007. Originally Technical Manual of the American Association of Textile Chemists and
approvedin1997.Lastpreviouseditionapprovedin2006asF1959/F1959M–06. Colorists.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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F1959/F1959M–06a
3.1.2 ablationresponseenergy(E ),n—theincidentenergy 3.1.13 charring, n—the formation of carbonaceous resid
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