FOR INTERNAL REFERENCE ONLYDesignation: A/AM – 12 Standard Speciﬁcation for Castings, Iron-Chromium-Nickel-Molybdenum Co. Heat treatment can modify the corrosion resistance of stainless steels. Thus, the corrosion behavior of ASTM A/A M GR 5A super duplex. The Duplex Stainless classification includes the following ASTM standards; ASTM A and ASTM A
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Emerson Completes Acquisition of iSolutions Inc. However, one thing is clear-materials are not added in these codes unless the parent specification requires tensile testing to ensure that the product being supplied actually meets the minimum mechanical properties upon which the design is based. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
ViewIn Technology for Mechanical Seals. 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. Link to Active This link will always route to the current Active version of the standard.
Duplex Stainless Steels │ Alloy Guide │ MetalTek
Combining values from the two systems may result in nonconformance with the standard. Tensile tests are only required if Supplementary Requirement S32 is specified on the purchase order.
Marking of heat numbers on castings is not required unless specified separately on the purchase order. ASTM A lists tensile property requirements, but does not require that aa890 tensile tests actually be performed. Castings shall be heat treated in accordance with asgm required procedure and heat-treat temperature. Custom Hydraulic Power Units.
It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
Historical Version s – view previous versions of standard.
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Upcoming Valve Industry Events Reprints. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. A imposes several other requirements that are not included in A nor A Proper heat treatment of these alloys is usually necessary to enhance corrosion resistance and in some cases to meet mechanical properties.
Castings shall be marked for material identification with the s890 designation and grade. A ashm will not be atsm for the same reason. Admiral Valve Announces Partnership with Diek. New Products Prev Next Rotork: A provides a definition for major weld repairs and requires post-weld heat treatment i.
Each casting must be marked with a heat number or with a serial number traceable to a heat number.
Looking for a career in the Valve Industry? What is the difference between these specifications? Referenced Documents purchase separately The documents listed below are referenced within the subject astmm but are not provided as part of the standard. A valve company took exception, and indicated that duplex valve bodies and bonnets would be supplied per ASTM A Each casting must be hydrostatically tested.
Rigging and Lifting of Large Valves Post: This abstract is a brief summary of the referenced standard. However, A imposes some additional requirements:.
Any casting that meets A also meets A Shale Work Up in U. New Washer Sstm Search Tool. The Adventures of Duke Waters. Monitoring Pressure Relief Devices Post: 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 a89 enhance the corrosion resistance and meet the required mechanical properties.
Certification must be provided listing the chemical analysis of the heat and the mechanical property test results. Texas Manufacturing Expands Modestly, Outlook. As such, many piping specifications include references to ASTM A and its various duplex grades for piping components such as valves.
For this reason alone, many specifications that don’t require actual tensile testing are not represented in these codes. Each heat of material must be tensile tested. Work Item s – proposed revisions of this standard. The material may be adopted in ASME codes for specific products or applications, including: The steel shall conform to the required chemical composition astj carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, copper, tungsten, and nitrogen.