Historical Version s - view previous versions of standard. More A This guide covers standard specification for three classes of gray iron for castings intended for use as valve pressure retaining parts, pipe fittings, and flanges. Chemical analysis shall be performed in each lot and shall conform to the required chemical composition for phosphorous and sulfur. Tension test shall be conducted on each class of gray iron castings and shall conform to the specified values of tensile strength.

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The values given in parentheses are for information only. Copyright ASTM Standard Specication for Gray Iron Castings for Valves, Flanges, and Pipe Fittings1 This standard is issued under the xed designation A ; 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. This standard has been approved for use by agencies of the Department of Defense. Scope 1. Referenced Documents 2. Terminology 3. Classication 4. Ordering Information 5. Workmanship, Finish, and Appearance 6. Current edition approved Dec. Published January Originally published as A — 29T.

Last previous edition A — Chemical Requirements 7. Tensile Properties 8. Transverse Test 9. The load shall be applied at a rate that will produce 0. Cast Test Bars In the particular method shown12 refers to December 8, B 1 is the cupola number, and the numeral 1 which follows shows the hour cast 1 p. The actual cross-sectional area shall be used in calculating the tensile strength. Alternate Test Bars When the alternate bars are used, they shall be machined and tested in accordance with Specication A 48 and shall meet the requirements of Specication A Inspection Complete records of all tests and inspections shall be maintained by the manufacturer and shall be available for review by the purchaser.

Rejection and Rehearing Rejection shall be reported to the manufacturer or supplier promptly and in writing.

In case of dissatisfaction with the test results, the manufacturer or supplier may make claim for a rehearing. Certication The certication shall also include the results of all tests performed including chemical analysis.

However, the document shall clearly identify the organization submitting the certication and the authorized agent of the manufacturer who certied the test results. Notwithstanding the absence of a signature, the organization submitting the certication is responsible for its content. Keywords Tension Test Apparatus Sampling Test Specimens Should alternative grip-ends be disputed, the threaded grip-ends shall be used.

Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.


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ASTM - Valve, Material Specifications



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