ASTM B810-01a(2006)
(Test Method)Standard Test Method for Calibration of Atmospheric Corrosion Test Chambers by Change in Mass of Copper Coupons
Standard Test Method for Calibration of Atmospheric Corrosion Test Chambers by Change in Mass of Copper Coupons
SIGNIFICANCE AND USE
Electrical devices that contain electrical contacts generally contain some copper-based materials. Atmospheric corrosion of copper parts in such devices often occurs in service environments. A quantitative measure of the effect of a laboratory corrosion test on copper permits assessment of the severity of the test. In addition, corrosion tests may be defined in terms of their effect on copper; this test method provides a way of comparing one test against a standard defined elsewhere, or allows a comparison of the performance of a test over a period of time. Although this test method provides for a relatively simple check of a test, the user is advised that additional analysis of the test chamber ambient is generally required to reproduce test conditions.
Atmospheric corrosion tests are used on a variety of materials besides copper. Care should be exercised in drawing conclusions about the effects on such materials of apparently equivalent tests if the composition of gases or experimental conditions are different. The primary use of this calibration test method is to assure correlation among nominally identical tests.
SCOPE
1.1 This test method covers the calibration of atmospheric corrosion test chambers for electrical contacts that produce an adherent film of corrosion product on copper, such as a test comprised of a mixture of flowing gases that react with copper.
1.2 This test method is not applicable to tests where corrosion products may be removed from a copper surface during the test by fluids.
1.3 This test method is not applicable to tests where airborne solid or liquid material may be deposited on a copper surface during the test, as in a test which includes particulates suspended in the atmosphere.
1.4 The values stated in SI units are to be regarded as the standard.
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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.
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Standards Content (Sample)
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Designation:B810–01a(Reapproved2006)
Standard Test Method for
Calibration of Atmospheric Corrosion Test Chambers by
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Change in Mass of Copper Coupons
This standard is issued under the fixed designation B810; 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 coupons are cleaned by a standard process. Each coupon is
weighed and the value is recorded.All coupons are exposed to
1.1 This test method covers the calibration of atmospheric
the corrosion test for a specified time. The coupons are
corrosion test chambers for electrical contacts that produce an
removed from the test and weighed and the new values are
adherent film of corrosion product on copper, such as a test
recorded. The change in weight for each coupon is calculated.
comprised of a mixture of flowing gases that react with copper.
The coupons are subjected to additional analysis as appropriate
1.2 This test method is not applicable to tests where
to determine the composition and thickness of any films
corrosion products may be removed from a copper surface
present on the surface.
during the test by fluids.
1.3 This test method is not applicable to tests where
4. Significance and Use
airborne solid or liquid material may be deposited on a copper
4.1 Electrical devices that contain electrical contacts gener-
surface during the test, as in a test which includes particulates
ally contain some copper-based materials. Atmospheric corro-
suspended in the atmosphere.
sion of copper parts in such devices often occurs in service
1.4 The values stated in SI units are to be regarded as the
environments. A quantitative measure of the effect of a
standard.
laboratory corrosion test on copper permits assessment of the
1.5 This standard does not purport to address all of the
severity of the test. In addition, corrosion tests may be defined
safety concerns, if any, associated with its use. It is the
in terms of their effect on copper; this test method provides a
responsibility of the user of this standard to become familiar
way of comparing one test against a standard defined else-
with all hazards including those identified in the appropriate
where, or allows a comparison of the performance of a test
Material Safety Data Sheet (MSDS) for this product/material
over a period of time.Although this test method provides for a
as provided by the manufacturer, to establish appropriate
relatively simple check of a test, the user is advised that
safety and health practices, and determine the applicability of
additional analysis of the test chamber ambient is generally
regulatory limitations prior to use.
required to reproduce test conditions.
2. Referenced Documents 4.2 Atmospheric corrosion tests are used on a variety of
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materials besides copper. Care should be exercised in drawing
2.1 ASTM Standards:
conclusions about the effects on such materials of apparently
B845 Guide for Mixed Flowing Gas (MFG) Tests for
equivalent tests if the composition of gases or experimental
Electrical Contacts
conditions are different.The primary use of this calibration test
3. Summary of Test Method
method is to assure correlation among nominally identical
tests.
3.1 Copper coupon samples of a well-defined size are
prepared and each is labeled for identification. All such
5. Apparatus
5.1 Racks or Fixtures suitable for holding the copper cou-
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This test method is under the jurisdiction of ASTM Committee B02 on
pons in the test chamber are required. Make these fixtures from
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
amaterialthatisnotattackedbythecorrosiontest.Thefixtures
B02.11 on Electrical Contact Test Methods.
shall be designed to:
Current edition approved Dec. 1, 2006. Published December 2006. Originally
approved in 1991. Last previous edition approved in 2001 as B810 – 01a. DOI:
5.1.1 Hold the coupons in a vertical orientation,
10.1520/B0810-01AR06.
5.1.2 Hold the coupons so that they do not show any
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
perceptible motion when observed with the unaided eye during
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the test,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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B810–01a (2006)
5.1.3 Cover less than 5 % of the entire coupon surface area, appropriate guidelines applied to cubic chambers. Thus, if the
5.1.4 Touch the coupon
...
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