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.
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 .
1.5 The values stated in SI units are the standard (see IEEE/ASTM SI 10 .

General Information

Status
Historical
Publication Date
31-Aug-2005
Current Stage
Ref Project

Relations

Buy Standard

Standard
ASTM D5485-05 - Standard Test Method for Determining the Corrosive Effect of Combustion Products Using the Cone Corrosimeter
English language
11 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

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:D5485–05
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope E1354 Test Method for Heat and Visible Smoke Release
Rates for Materials and Products Using an Oxygen Con-
1.1 This fire-test-response standard measures the corrosive
sumption Calorimeter
effect by loss of metal from the combustion products of
IEEE/ASTM SI-10 Standard for Use of the International
materials, components, or products.
System of Units (SI): The Modern Metric System
1.2 This test method provides corrosion results of product
2.2 Other Document:
and material specimens limited to a maximum size of 100 by
OSHA191.1450 Occupational Exposure to Hazard Chemi-
100 mm in area and 50 mm thick.
3
cals in Laboratories
1.3 The results of this test method have not been investi-
gated with respect to correlation to actual fires.
3. Terminology
1.4 This standard measures and describes the response of
3.1 Definitions:
materials, products, or assemblies to heat and flame under
3.1.1 For definitions of terms used in this test method, refer
controlled conditions, but does not by itself incorporate all
to Terminologies E176 and D1711.
factors required for fire hazard or fire risk assessment of the
3.2 Definitions of Terms Specific to This Standard:
materials, products, or assemblies under actual fire conditions.
3.2.1 cone corrosimeter, n—equipment used to determine
1.4.1 Additional information regarding the targets, the test
corrosion in this test method.
conditions, and test limitations are provided in the annex.
3.2.2 corrosion-by-metal-loss, n—loss of metal of a target
1.5 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
1.6 The values stated in SI units are the standard (see
heated by its own flame.
IEEE/ASTM SI 10 .
3.2.5 sustained flaming, n—existence of flame on or over
2. Referenced Documents the surface of the test specimen for periods of4sor more.
2
3.2.5.1 Discussion—Flaming ignition of less than4sis
2.1 ASTM Standards:
identified as transitory flaming or flashing.
D618 Practice for Conditioning Plastics for Testing
3.2.6 target, n—detector of known electrical resistance
D1711 Terminology Relating to Electrical Insulation
which can lose metal through a process of corrosion when it is
D6113 Test Method for Using a Cone Calorimeter to
exposed to combustion products.
Determine Fire-Test-Response Characteristics of Insulat-
3.3 Symbols Specific to This Standard:
ing Materials Contained in Electrical or Optical Fiber
3.3.1 A —initial corrosion instrument reading.
0
Cables
3.3.2 A —corrosion instrument reading at the end of 1-h
1
E176 Terminology of Fire Standards
exposure to combustion products.
3.3.3 A —corrosion instrument reading at the end of 24 h
24
in the environmental chamber.
1
This test method is under the jurisdiction of ASTM Committee D09 on
3.3.4 C—corrosion of a target, nm.
Electrical and Electronic Insulating Materials and is the direct responsibility of
Subcommittee D09.21 on Fire Performance Standards.
3.3.5 C —corrosion at the end of 1-h exposure to combus-
1
Current edition approved Sept. 1, 2005. Published October 2005. Originally
tion products, nm.
approved in 1994. Last previous edition approved in 1999 as D5485–99.
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
3
Standards volume information, refer to the standard’s Document Summary page on Available from Occupational Safety and Health Agency/U.S. Departmnet of
the ASTM website. Labor.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D5485–05
3.3.6 C —corrosionattheendof24hintheenvironmental 5. Significance and Use
24
chamber, nm.
5.1 The metal loss from corrosion is d
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.