ASTM D1838-07

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.
An American National Standard
Designation:D1838–06 Designation: D 1838 – 07
Standard Test Method for
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Copper Strip Corrosion by Liquefied Petroleum (LP) Gases
This standard is issued under the fixed designation D 1838; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method detectscovers the detection of the presence of components in liquefied petroleum gases which may be
corrosive to copper.
NOTE 1—For an equivalent copper strip test applicable to less volatile petroleum products, see Test Method D 130.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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. For specific warning statements, see 6.1, 8.3.19.3.1, and Annex A1.
2. Referenced Documents
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2.1 ASTM Standards:
D 130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test
E 1Specification for ASTM Liquid-in-Glass Thermometers Specification for ASTM Liquid-in-Glass Thermometers
D 1265 Practice for Sampling Liquefied Petroleum (LP) Gases, Manual Method
D 3700 Practice for Obtaining LPG Samples Using a Floating Piston Cylinder
2.2 ASTM Adjuncts:
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ADJD0130, ASTM Copper Strip Corrosion Standard for Petroleum
3. Summary of Test Method
3.1 Apolishedcopperstripisimmersedinapproximately100mLofthesampleandexposedatatemperatureof37.8°C(100°F)
for 1 h in a cylinder of suitable working pressure. At the end of this period, the copper strip is removed and rated as one of the
four classifications of the ASTM Copper Corrosion Standards.
4. Significance and Use
4.1 Copper corrosion limits provide assurance that difficulties will not be experienced in deterioration of the copper and
copper-alloy fittings and connections that are commonly used in many types of utilization, storage, and transportation equipment.
5. Apparatus
5.1 Corrosion Test Cylinder, constructed of stainless steel with an O-ring removable top closure according to the dimensions
given in Fig. 1. Provide a flexible inert hose, such as one composed of aluminum or stainless steel, which permits inverting the
test cylinder as required in the procedure (see Note 2). The whole assembly, including the corrosion test cylinder, shall be capable
of withstandingconstructed to withstand a minimum hydrostatic test pressure of 68956900 kPa (1000 psig). No leak shall be
discernible when tested at 3450 kPa (500 psig) with gas.
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NOTE 2—Swivel connections with an adapter to fit a 6.4 mm ( ⁄4 in.) pipe may be used.
5.1.1 The assembly shall be tested for compliance with the minimum pressure rating of 6900 kPa (1000 psig) by hydrostatic
testing, or alternative testing protocol acceptable to the local authority having jurisdiction, prior to first use.Additional testing can
be required by the local authority having jurisdiction.
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This test method is under the jurisdiction ofASTM Committee D02 on Petroleum Products and Lubricants and is the direct responsibility of Subcommittee D02.H0 on
Liquefied Petroleum Gas.
Current edition approved JulyNov. 1, 2006.2007. Published July 2006.November 2007. Originally approved in 1961. Last previous edition approved in 20052006 as
D 1838–056.
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For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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Available from ASTM International Headquarters. Order Adjunct No. ADJD0130.
*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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D1838–07
Metric Equivalents
in. mm in. mm
1
⁄8 3.2 3 76
1
⁄4 6.4 6 152
1
1 ⁄2 38.1
FIG. 1 Copper Strip Corrosion Test Cylinder
5.1.2 The assembly shall be verified for gas tightness by leak testing at 3450 kPa (500 psig) with inert gas prior to first use,
whenever pressure-containing components of the assembly are replaced,
...