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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A grades will not be added for the same reason.

Monitoring Pressure Relief Devices Post: 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.

Rigging and Lifting of Large Valves Post: ViewIn Technology for Mechanical Seals. Latest Post Popular Links Events.

Each casting must be hydrostatically tested. 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 Adventures of Duke Waters.

This abstract is a brief summary of the referenced standard.

Texas Manufacturing Expands Modestly, Outlook. The material may be adopted in ASME codes for specific products or applications, including: For this reason alone, many specifications that don’t require actual tensile testing are not represented in these codes. 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.


Materials Q&A

However, A imposes some additional requirements: Upcoming Valve Industry Events Reprints. However, A imposes some additional requirements:. New Washer Application Search Tool. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Tensile tests are only required if Supplementary Requirement S32 is specified on the purchase order.

New Products Prev Next Aa890 Combining values from the two systems asgm result in nonconformance with the standard. Each casting must be marked with a heat number or with a serial number traceable to a heat number.

ASTM A lists tensile property requirements, but does not require that the tensile tests actually be performed. As such, many piping specifications include references to ASTM A and its various duplex grades for piping components such as valves. Shale Work Up in U. The steel shall conform to the required chemical composition for carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, copper, tungsten, and nitrogen. A only requires post-weld heat treatment if Supplementary Requirement S33 is imposed on the purchase order.

Duplex Stainless Steel Investment Casting Compositions – Wisconsin Precision Casting

Certification must be provided listing the chemical analysis of the heat and the mechanical property test results. Despite Oil Prices Post: Admiral Valve Announces Partnership with Diek. Emerson Completes Acquisition of iSolutions Inc. A provides a definition for major weld repairs and requires post-weld heat treatment i. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.


Link to Active This link asstm always route to the current Active version of the standard. Work Item s – proposed revisions of this standard. 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.

ASTM A was reapproved without changes in Custom Hydraulic Power Units. Minimum heat-treat temperatures are specified; however, it is sometimes necessary adtm 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.

Emerson Completes Acquisition of iSolutions I. Castings shall be marked for material identification with the specification designation and grade.

Any casting that meets A also meets A Marking of heat numbers on castings is not required unless specified separately on the purchase order.