Standard Test Method for Determining the Corrosive Effect of Combustion Products Using the Cone Corrosimeter

SIGNIFICANCE AND USE
The metal loss from corrosion is directly related to the increase in electrical resistance of the target due to the decrease in conductive cross-sectional area.
The relationship between resistance increase of metallic targets used in this test method and the amount of metal loss as reported by a uniform loss in thickness has not been determined.
This test method is used to determine the corrosive effect of combustion products from burning electrical insulations or coverings or their constituent materials or components. Corrosion is determined by the reduction of thickness of the metal on standardized targets, as measured by electrical resistance. These targets are not necessarily representative of the intended end use.
This test method is intended for use in electrical insulations or coverings material and product evaluations, for additional data to assist in design of electrical insulations or coverings products, or for development and research of electrical insulations or coverings products.
A value of the heating flux is selected to be relevant to the fire scenario being investigated (up to 100 kW/m2). Additional information for testing is given in A1.2.3.
SCOPE
1.1 This fire-test-response standard measures the corrosive effect by loss of metal from the combustion products of materials, components, or products.
1.2 This test method provides corrosion results of product and material specimens limited to a maximum size of 100 by 100 mm in area and 50 mm thick.
1.3 The results of this test method have not been investigated with respect to correlation to actual fires.
1.4 This standard measures and describes the response of materials, products, or assemblies to heat and flame under controlled conditions, but does not by itself incorporate all factors required for fire hazard or fire risk assessment of the materials, products, or assemblies under actual fire conditions.
1.4.1 Additional information regarding the targets, the test conditions, and test limitations are provided in the annex.
1.5 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 limitations prior to use. For specific hazard statements, see Section 7.  
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. (See )
1.7 Fire testing is inherently hazardous. Adequate safeguards for personnel and property shall be employed in conducting these tests.

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ASTM D5485-10 - Standard Test Method for Determining the Corrosive Effect of Combustion Products Using the Cone Corrosimeter
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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
An American National Standard
Designation:D5485–10
Standard Test Method for
Determining the Corrosive Effect of Combustion Products
1
Using the Cone Corrosimeter
This standard is issued under the fixed designation D5485; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D1711 Terminology Relating to Electrical Insulation
D6113 Test Method for Using a Cone Calorimeter to
1.1 This fire-test-response standard measures the corrosive
Determine Fire-Test-Response Characteristics of Insulat-
effect by loss of metal from the combustion products of
ing Materials Contained in Electrical or Optical Fiber
materials, components, or products.
Cables
1.2 This test method provides corrosion results of product
E176 Terminology of Fire Standards
and material specimens limited to a maximum size of 100 by
E1354 Test Method for Heat and Visible Smoke Release
100 mm in area and 50 mm thick.
Rates for Materials and Products Using an Oxygen Con-
1.3 The results of this test method have not been investi-
sumption Calorimeter
gated with respect to correlation to actual fires.
IEEE/ASTM SI-10 Standard for Use of the International
1.4 This standard measures and describes the response of
System of Units (SI): The Modern Metric System
materials, products, or assemblies to heat and flame under
2.2 Other Document:
controlled conditions, but does not by itself incorporate all
OSHA191.1450 Occupational Exposure to Hazard Chemi-
factors required for fire hazard or fire risk assessment of the
3
cals in Laboratories
materials, products, or assemblies under actual fire conditions.
1.4.1 Additional information regarding the targets, the test
3. Terminology
conditions, and test limitations are provided in the annex.
3.1 Definitions:
1.5 The values stated in SI units are to be regarded as
3.1.1 For definitions of terms used in this test method, refer
standard. No other units of measurement are included in this
to Terminologies E176 and D1711.
standard. (See IEEE/ASTM SI-10)
3.2 Definitions of Terms Specific to This Standard:
1.6 Fire testing is inherently hazardous. Adequate safe-
3.2.1 cone corrosimeter, n—equipment used to determine
guards for personnel and property shall be employed in
corrosion in this test method.
conducting these tests.
3.2.2 corrosion-by-metal-loss, n—loss of metal of a target
1.7 This standard does not purport to address all of the
expressed as reduction of thickness of the target metal.
safety concerns, if any, associated with its use. It is the
3.2.3 exposure chamber, n—enclosure in which a target is
responsibility of the user of this standard to establish appro-
exposed to combustion products.
priate safety and health practices and determine the applica-
3.2.4 heating flux, n—incident power per unit area that is
bility of regulatory limitations prior to use. For specific hazard
imposed externally from the heater on the specimen.
statements, see Section 7.
3.2.4.1 Discussion—The specimen, once ignited, is also
2. Referenced Documents heated by its own flame.
2
3.2.5 sustained flaming, n—existence of flame on or over
2.1 ASTM Standards:
the surface of the test specimen for periods of4sor more.
D618 Practice for Conditioning Plastics for Testing
3.2.5.1 Discussion—Flaming ignition of less than4sis
identified as transitory flaming or flashing.
1
This test method is under the jurisdiction of ASTM Committee D09 on
3.2.6 target, n—detector of known electrical resistance
Electrical and Electronic Insulating Materials and is the direct responsibility of
which can lose metal through a process of corrosion when it is
Subcommittee D09.21 on Fire Performance Standards.
exposed to combustion products.
Current edition approved March 1, 2010. Published April 2010. Originally
3.3 Symbols Specific to This Standard:
approved in 1994. Last previous edition approved in 2009 as D5485–09. DOI:
10.1520/D5485-10.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from Occupational Safety and Health Administration (OSHA)/U.S.
Standards volume information, refer to the standard’s Document Summary page on Departmnet of Labor, 200 Constitution Ave., NW, Washington, DC 20210, http://
the ASTM website. www.osha.gov.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D5485–10
3.3.1 A —initial corrosion instrument reading. increase in electrical resistance. Th
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