ASTM D4350-13

Standard Test Method for Corrosivity Index of Plastics and Fillers

SIGNIFICANCE AND USE
4.1 This test method provides a means for comparing the corrosive potential of plastics and fillers in humid atmospheres.  
4.2 This test method is intended for use in research and evaluation.
SCOPE
1.1 This test method is designed for use in obtaining the specific conductance of a water extract of plastics and fillers. The magnitude of this conductance may be taken as an index of the likelihood that, in a humid atmosphere, metal surfaces in contact with these materials may become corroded due to galvanic action or direct chemical attack; this is called the corrosivity index. Note 1—There is no known ISO equivalent to this standard.  
1.2 The values stated in SI units are to be regarded as standard.  
1.3 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. Specific precautionary statements are given in Section 7.

General Information

• Status: Historical
• Publication Date: 14-Dec-2013
• ICS: 83.040.30 - Auxiliary materials and additives for plastics
• Technical Committee: D20 - Plastics
• Drafting Committee: D20.16 - Thermosetting Materials

Relations

• Replaces: ASTM D4350-00(2005) - Standard Test Method for Corrosivity Index of Plastics and Fillers
• Effective Date: 15-Dec-2013
• Replaced By: ASTM D4350-15 - Standard Test Method for Corrosivity Index of Plastics and Fillers
• Effective Date: 01-Jun-2015
• Referred By: ASTM D5948-05(2020) - Standard Specification for Molding Compounds, Thermosetting
• Effective Date: 15-Dec-2013
• Referred By: ASTM D4850-23 - Standard Terminology Relating to Fabrics and Fabric Test Methods
• Effective Date: 15-Dec-2013

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation:D4350 −13
StandardTest Method for
1
Corrosivity Index of Plastics and Fillers
This standard is issued under the fixed designation D4350; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* time. The specific resistance of each of the solutions extracted
from the test specimens is measured by using the specified
1.1 This test method is designed for use in obtaining the
conductivity cell. The specific conductance is calculated from
specific conductance of a water extract of plastics and fillers.
the data and is called the corrosivity index of the material.
The magnitude of this conductance may be taken as an index
ofthelikelihoodthat,inahumidatmosphere,metalsurfacesin
4. Significance and Use
contact with these materials may become corroded due to
4.1 This test method provides a means for comparing the
galvanic action or direct chemical attack; this is called the
corrosivity index. corrosivepotentialofplasticsandfillersinhumidatmospheres.
4.2 This test method is intended for use in research and
NOTE 1—There is no known ISO equivalent to this standard.
evaluation.
1.2 The values stated in SI units are to be regarded as
standard.
5. Apparatus
1.3 This standard does not purport to address all of the
5.1 Conductance Bridge, Wheatstone type, with a range
safety concerns, if any, associated with its use. It is the
from 1 to 250 000-Ω measured resistance, a built-in
responsibility of the user of this standard to establish appro-
potentiometer, a 1000 6 50-cycles per second oscillator, and a
priate safety and health practices and determine the applica-
sensitive null point indicator. The bridge shall be capable of
bility of regulatory limitations prior to use. Specific precau-
measuring resistance with an accuracy of 62%.
tionary statements are given in Section 7.
5.2 Conductivity Cell, dip-type, micro, for solutions of
2. Referenced Documents
medium conductance. The cell should have a cell constant of
2
−1
2.1 ASTM Standards:
approximately 1.0 cm . The borosilicate glass shall have a
D618Practice for Conditioning Plastics for Testing
maximum outside tube diameter of 12.7 mm, overall length of
D1193Specification for Reagent Water
177.8 mm, chamber inside diameter of 9.5 mm, and chamber
3
E1Specification for ASTM Liquid-in-Glass Thermometers
depth of 50.8 mm.
E11Specification forWovenWireTest Sieve Cloth andTest
5.3 Drill, electric, capable of holding a 10.54-mm drill bit,
Sieves
and rotating at 500-r/min maximum speed.
E145Specification for Gravity-Convection and Forced-
5.4 Mill,suchaslaboratoryWileycuttingmillorequivalent.
Ventilation Ovens
E691Practice for Conducting an Interlaboratory Study to
5.5 Sieves, standard (alternative) sieve designations 425 µm
Determine the Precision of a Test Method
(No. 40), and 250 µm (No. 60) in accordance with Specifica-
tion E11.
3. Summary of Test Method
5.6 Analytical Balance, capable of determining mass to the
3.1 Specimensofplasticsorfillersareimmersedindistilled
nearest 1.0 mg.
water and exposed to specified conditions of temperature and
5.7 Oven, forced-ventilation type, with uniformity of tem-
1
ThistestmethodisunderthejurisdictionofASTMCommitteeD20onPlastics
perature within 61% of the differential between oven and
and is the direct responsibility of Subcommittee D20.16 on Thermosetting Materi-
als.
Current edition approved Dec. 15, 2013. Published December 2013. Originally
3
approved in 1984. Last previous edition approved in 2005 as D4350-00 (2005). The sole source of supply of the conductivity cell (Model No. 3403) known to
DOI: 10.1520/D4350-13. the committee at this time is Yellow Springs Instrument Co., Inc., P.O. Box 279,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or YellowSprings,OH45387.Ifyouareawareofalternativesuppliers,pleaseprovide
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM this information toASTM International Headquarters. Your comments will receive
1
Standards volume information, refer to the standard’s Document Summary page on careful consideration at a meeting of the responsible technical committee, which
the ASTM website. you may attend.
*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
1

---------------------- Page: 1 ----------------------
D4350−13
FIG. 1 Specific Conductance of 0.0100 Demal KCl
ambienttemperature,witharateofventilationof100to200air 5.9.3 Pipet, volume
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D4350 − 00 (Reapproved 2005) D4350 − 13
Standard Test Method for
1
Corrosivity Index of Plastics and Fillers
This standard is issued under the fixed designation D4350; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Scope*
1.1 This test method is designed for use in obtaining the specific conductance of a water extract of plastics and fillers. The
magnitude of this conductance may be taken as an index of the likelihood that, in a humid atmosphere, metal surfaces in contact
with these materials may become corroded due to galvanic action or direct chemical attack; this is called the corrosivity index.
NOTE 1—There is no similar or equivalent ISO known ISO equivalent to this standard.
1.2 The values stated in SI units are to be regarded as standard.
1.3 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. Specific precautionary statements are given in Section 7.
2. Referenced Documents
2
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D1193 Specification for Reagent Water
E1 Specification for ASTM Liquid-in-Glass Thermometers
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E145 Specification for Gravity-Convection and Forced-Ventilation Ovens
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Summary of Test Method
3.1 Specimens of plastics or fillers are immersed in distilled water and exposed to specified conditions of temperature and time.
The specific resistance of each of the solutions extracted from the test specimens is measured by using the specified conductivity
cell. The specific conductance is calculated from the data and is called the corrosivity index of the material.
4. Significance and Use
4.1 This test method provides a means for comparing the corrosive potential of plastics and fillers in humid atmospheres.
4.2 This test method is intended for use in research and evaluation.
5. Apparatus
5.1 Conductance Bridge, Wheatstone type, with a range from 1 to 250 000-Ω measured resistance, a built-in potentiometer, a
1000 6 50-cycles per second oscillator, and a sensitive null point indicator. The bridge shall be capable of measuring resistance
with an accuracy of 62 %.
1
This test method is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.16 on Thermosetting Materials.
Current edition approved Nov. 1, 2005Dec. 15, 2013. Published January 2006December 2013. Originally approved in 1984. Last previous edition approved in 20002005
as D4350 - 00.D4350 - 00 (2005). DOI: 10.1520/D4350-00R05.10.1520/D4350-13.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
1

---------------------- Page: 1 ----------------------
D4350 − 13
FIG. 1 Specific Conductance of 0.0100 Demal KCl
5.2 Conductivity Cell, dip-type, micro, for solutions of medium conductance. The cell should have a cell constant of
−1
approximately 1.0 cm . The borosilicate glass shall have a maximum outside tube diameter of 12.7 mm, overall length of 177.8
3
mm, chamber inside diameter of 9.5 mm, and chamber depth of 50.8 mm.
5.3 Drill, electric, capable of holding a 10.54-mm drill bit, and rotating at 500-r/min maximum speed.
5.4 Mill, such as laboratory Wiley cutting mill or equivalent.
5.5 Sieves, standard (alternative) sieve designations 425 μm (No. 40), and 250 μm (No. 60) in accordance with Specification
E11.
5.6 Analytical Balance, capable of determining mass to the nearest 1.0 mg.
5.7 Oven, forced-ventilation type, with uniformity of temperature within 61 % of the differential between oven and ambient
temperature, with a ra
...