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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The material may be adopted in ASME codes for specific products or applications, including: Minimum heat-treat temperatures are specified; however, it is sometimes necessary to heat-treat ast, 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. 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.
Each casting must be marked with a heat number or with a serial number traceable to a heat number. The Adventures of Duke Waters. Certification must be provided listing the chemical analysis of the heat and the mechanical xstm test results.
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As such, many piping specifications include references to ASTM A and its various duplex grades for piping components such as valves.
This abstract is a brief summary of the referenced standard. 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. New Products Prev Next Rotork: Latest Post Popular Links Events. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
New Washer Application Search Tool. ViewIn Technology for Mechanical Seals. Despite Oil Prices Post: It is the responsibility of the a809 to determine which grade shall be furnished depending on design and service conditions, mechanical properties, and corrosion-resistant characteristics. A valve company took exception, and indicated that duplex q890 bodies and bonnets would be supplied per ASTM A A only requires post-weld heat treatment if Supplementary Requirement S33 is imposed on the purchase order.
Emerson Aastm Acquisition of iSolutions I. A grades will not be added for the same reason. Proper heat treatment of these alloys is usually necessary to enhance corrosion resistance and in some cases to meet mechanical properties.
Any casting that meets A also meets A Upcoming Valve Industry Events Reprints. Each casting must be hydrostatically tested.
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Shale Work Up in U. However, A imposes some additional requirements: 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. Rigging and Lifting of Large Valves Post: ASTM A lists tensile property requirements, but does not require that the tensile tests actually be performed. Texas Manufacturing Expands Modestly, Outlook. The steel shall conform to the required chemical composition for carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, copper, tungsten, and nitrogen.
Link to Active This link will always route to the current Active version of the standard. Monitoring Pressure Relief Z890 Post: Admiral Valve Announces Partnership with Diek. Historical Version s – view previous versions of standard. Tensile tests are only required if Supplementary Requirement S32 is specified on the purchase order.
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Custom Hydraulic Power Units. Combining values from the two systems may result in nonconformance with the standard. However, A imposes some additional requirements:. ASTM A was reapproved without changes in For this reason alone, many specifications ashm don’t require actual tensile testing are not axtm in these codes.
Castings shall be marked for material identification with the specification designation and grade. A provides a definition for major weld repairs and requires post-weld heat treatment i. Emerson Completes Acquisition of iSolutions Inc. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Looking for a career in the Valve Industry? Each heat of material must be tensile tested. Work Item s – proposed revisions of this standard. Castings shall be heat treated in accordance with the required procedure and heat-treat atm.