ASTM D5894-10

Standard Practice for Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating Exposures in a Fog/Dry Cabinet and a UV/Condensation Cabinet)

SIGNIFICANCE AND USE
The outdoor corrosion of painted metals is influenced by many factors, including: corrosive atmospheres, rain, condensed dew, UV light, wet/dry cycling, and temperature cycling. These factors frequently have a synergistic effect on one another. This practice is intended to provide a more realistic simulation of the interaction of these factors than is found in traditional tests with continuous exposure to a static set of corrosive conditions.
Results obtained from this practice can be used to compare the relative durability of materials subjected to the specific test cycle used.
No single exposure test can be specified as a complete simulation of actual use conditions in outdoor environments. Results obtained from exposures conducted according to this practice can be considered as representative of actual outdoor exposures only when the degree of rank correlation has been established for the specific materials being tested. The relative durability of materials in actual outdoor service can be very different in different locations because of differences in UV radiation, time of wetness, temperature, pollutants, and other factors. Therefore, even if results from a specific artificial test condition are found to be useful for comparing the relative durability of materials exposed in a particular exterior environment, it cannot be assumed that they will be useful for determining relative durability for a different environment.
Even though it is very tempting, it is not recommended to calculate an “acceleration factor” relating xhours of laboratory exposure to y months of exterior exposure. Different materials and different formulations of the same material can have significantly different acceleration factors. The acceleration factor also varies depending on the variability in rate of degradation in the laboratory test and in actual outdoor exposure.
This practice is best used to compare the relative performance of materials tested at the same time in the same e...
SCOPE
1.1 This practice covers basic principles and operating practice for cyclic corrosion/UV exposure of paints on metal, using alternating periods of exposure in two different cabinets: a cycling salt fog/dry cabinet, and a fluorescent UV/condensation cabinet.
1.2 This practice is limited to the methods of obtaining, measuring, and controlling exposure conditions, and procedures. It does not specify specimen preparation nor evaluation of results.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.

General Information

• Status: Historical
• Publication Date: 30-Nov-2010
• ICS: 87.040 - Paints and varnishes
• Technical Committee: D01 - Paint and Related Coatings, Materials, and Applications
• Drafting Committee: D01.27 - Accelerated Testing

Relations

• Replaces: ASTM D5894-05 - Standard Practice for Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating Exposures in a Fog/Dry Cabinet and a UV/Condensation Cabinet)
• Effective Date: 01-Dec-2010
• Referred By: ASTM D3794-22 - Standard Guide for Testing Coil Coatings
• Effective Date: 01-Dec-2010
• Referred By: ASTM D6577-15(2019) - Standard Guide for Testing Industrial Protective Coatings
• Effective Date: 01-Dec-2010
• Referred By: ASTM D7893-13(2018) - Standard Guide for Corrosion Test Panel Preparation, Testing, and Rating of Coil-Coated Building Products
• Effective Date: 01-Dec-2010
• Referred By: ASTM D1654-08(2016)e1 - Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments
• Effective Date: 01-Dec-2010

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: D5894 − 10
StandardPractice for
Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating
Exposures in a Fog/Dry Cabinet and a UV/Condensation
1
Cabinet)
This standard is issued under the fixed designation D5894; 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.
1. Scope* G113 Terminology Relating to Natural andArtificial Weath-
ering Tests of Nonmetallic Materials
1.1 This practice covers basic principles and operating
G147 Practice for Conditioning and Handling of Nonmetal-
practice for cyclic corrosion/UV exposure of paints on metal,
lic Materials for Natural and Artificial Weathering Tests
using alternating periods of exposure in two different cabinets:
G151 Practice for Exposing Nonmetallic Materials inAccel-
a cycling salt fog/dry cabinet, and a fluorescent UV/
erated Test Devices that Use Laboratory Light Sources
condensation cabinet.
G152 Practice for Operating Open Flame Carbon Arc Light
1.2 This practice is limited to the methods of obtaining,
Apparatus for Exposure of Nonmetallic Materials
measuring, and controlling exposure conditions, and proce-
G154 PracticeforOperatingFluorescentLightApparatusfor
dures. It does not specify specimen preparation nor evaluation
UV Exposure of Nonmetallic Materials
of results.
G155 Practice for Operating XenonArc LightApparatus for
Exposure of Non-Metallic Materials
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
3. Terminology
standard.
3.1 Definitions—ThedefinitionsgiveninTerminologyG113
1.4 This standard does not purport to address all of the
are applicable to this practice.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Summary of Practice
priate safety and health practices and determine the applica-
4.1 The test specimens are exposed to alternating periods of
bility of regulatory limitations prior to use.
one week in a fluorescent UV/condensation chamber and one
week in a cyclic salt fog/dry chamber. The fluorescent UV/
2. Referenced Documents
2
condensation cycle is 4-h UV at 0.89 W/(m · nm) at 340 nm
2
2.1 ASTM Standards:
at 60°C and 4-h condensation at 50°C, using UVA-340 lamps.
D610 Practice for Evaluating Degree of Rusting on Painted
The fog/dry chamber runs a cycle of 1-h fog at ambient
Steel Surfaces
temperature and 1-h dry-off at 35°C. The fog electrolyte is a
D714 Test Method for Evaluating Degree of Blistering of
relatively dilute solution, with 0.05 % sodium chloride and
Paints
0.35 % ammonium sulfate.
D1654 Test Method for Evaluation of Painted or Coated
NOTE 1—The irradiance target setpoint of 0.89 is based upon actual
irradiance levels that have been historically widely used for coatings.
Specimens Subjected to Corrosive Environments
D4587 Practice for Fluorescent UV-Condensation Expo-
5. Significance and Use
sures of Paint and Related Coatings
5.1 Theoutdoorcorrosionofpaintedmetalsisinfluencedby
G85 Practice for Modified Salt Spray (Fog) Testing
many factors, including: corrosive atmospheres, rain, con-
densed dew, UV light, wet/dry cycling, and temperature
cycling. These factors frequently have a synergistic effect on
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
Related Coatings, Materials, and Applications and is the direct responsibility of one another. This practice is intended to provide a more
Subcommittee D01.27 on Accelerated Testing.
realistic simulation of the interaction of these factors than is
Current edition approved Dec. 1, 2010. Published January 2011. Originally
found in traditional tests with continuous exposure to a static
approved in 1996. Last previous edition approved in 2005 as D5894 – 05. DOI:
set of corrosive conditions.
10.1520/D5894-10.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.2 Results obtained from this practice can be used to
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
compare the relative durability of materials subjected to the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. specific test cycle used.
*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

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D5894 − 10
5.3 No single exposure test can be specified as a complete 6.3 Salt Fog/Dry Cabinet, complying with Practice G85,
simulation of actual use conditions in outdoor enviro
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:D5894–05 Designation: D5894 – 10
Standard Practice for
Cyclic Salt Fog/UV Exposure of Painted Metal, (Alternating
Exposures in a Fog/Dry Cabinet and a UV/Condensation
1
Cabinet)
This standard is issued under the fixed designation D5894; 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.
1. Scope*
1.1 This practice covers basic principles and operating practice for cyclic corrosion/UV exposure of paints on metal, using
alternatingperiodsofexposureintwodifferentcabinets:acyclingsaltfog/drycabinet,andafluorescentUV/condensationcabinet.
1.2 Thispracticeislimitedtothemethodsofobtaining,measuring,andcontrollingexposureconditions,andprocedures.Itdoes
not specify specimen preparation nor evaluation of results.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D610 Practice for Evaluating Degree of Rusting on Painted Steel Surfaces
D714 Test Method for Evaluating Degree of Blistering of Paints
D1654 Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments
D4587 Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings
G85 Practice for Modified Salt Spray (Fog) Testing
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
G147 Practice for Conditioning and Handling of Nonmetallic Materials for Natural and Artificial Weathering Tests
G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
G152 Practice for Operating Open Flame Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials
G154 Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials
G155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials
3. Terminology
3.1 Definitions—The definitions given in Terminology G113 are applicable to this practice.
4. Summary of Practice
4.1 The test specimens are exposed to alternating periods of one week in a fluorescent UV/condensation chamber and one week
2
in a cyclic salt fog/dry chamber. The fluorescent UV/condensation cycle is 4-h UV at 0.89 W/(m · nm) at 340 nm at 60°C and 4-h
condensation at 50°C, using UVA-340 lamps. The fog/dry chamber runs a cycle of 1-h fog at ambient temperature and 1-h dry-off
at 35°C. The fog electrolyte is a relatively dilute solution, with 0.05 % sodium chloride and 0.35 % ammonium sulfate.
NOTE 1—The irradiance target setpoint of 0.89 is based upon actual irradiance levels that have been historically widely used for coatings.
5. Significance and Use
5.1 The outdoor corrosion of painted metals is influenced by many factors, including: corrosive atmospheres, rain, condensed
dew, UV light, wet/dry cycling, and temperature cycling. These factors frequently have a synergistic effect on one another. This
1
This practice is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.27 on Accelerated Testing.
Current edition approved JulyDec. 1, 2005.2010. Published July 2005.January 2011. Originally approved in 1996. Last previous edition approved in 19962005 as
D5894–96.D5894 – 05. DOI: 10.1520/D5894-105.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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 ----------------------
D5894 – 10
practice is intended to provide a more realistic simulation of the interaction of these factors than is found in traditional tests with
continuous exposure to a static set of corrosive conditions.
5.2 Re
...