ASTM A890 PDF

A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. It is the responsibility of the purchaser to determine which grade shall be furnished depending on design and service conditions, mechanical properties, and corrosion- resistant characteristics. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

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No further reproductions authorized. Product Marking 9. In addition, the manufacturers name or identication mark and the pattern number shall be cast or stamped using low-stress stamps on all castings. Small-size castings may be such that marking must be limited consistent with the available area. The marking of heat numbers on individual castings shall be agreed upon between the manufacturer and the purchaser. Marking shall be in such position as not to injure the usefulness of the casting.

Keywords Those that are ordinarily considered suitable for use with this specication are listed below by title only. Radiographic Examination S3. Liquid Penetrant Examination S5. Examination of Weld Preparation S6.

Certication S7. Charpy Impact Test S Hardness Test S Test Report S Unspecied Elements S Estimating Ferrite Content S Frequency of testing and location of tests shall be by agreement between the manufacturer and the purchaser.

Tensile Requirements S Test bars shall be poured in special blocks from the same heat as the castings represented. See S Tension coupons shall be machined to the form and dimensions of Fig. Testing shall be in accordance with Test Methods and Denitions A All other weld repairs shall be considered minor.

Prior Approval of Weld Material S Heat Treatment of Test Material S Approved March 1, Approved April 1, 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by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn.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 International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phone , fax , or service astm.

Permission rights to photocopy the standard may also be secured from the ASTM website www. Related Interests.

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More A Castings shall be heat treated in accordance with the required procedure and heat-treat temperature. Proper heat treatment of these alloys is usually necessary to enhance corrosion resistance and in some cases to meet mechanical properties. Minimum heat-treat temperatures are specified; however, it is sometimes necessary to heat-treat at higher temperatures, hold for some minimum time at temperature and then rapidly cool the castings in order to enhance the corrosion resistance and meet the required mechanical properties. The steel shall conform to the required chemical composition for carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, copper, tungsten, and nitrogen. Castings shall be marked for material identification with the specification designation and grade. This abstract is a brief summary of the referenced standard.

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A valve company took exception, and indicated that duplex valve bodies and bonnets would be supplied per ASTM A What is the difference between these specifications? As such, many piping specifications include references to ASTM A and its various duplex grades for piping components such as valves. ASTM A lists tensile property requirements, but does not require that the tensile tests actually be performed. Tensile tests are only required if Supplementary Requirement S32 is specified on the purchase order. In order to obtain a test report showing the actual chemistry and tensile test results, Supplementary Requirement S12 must also be imposed. Marking of heat numbers on castings is not required unless specified separately on the purchase order.

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