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
|Published (Last):||3 July 2011|
|PDF File Size:||4.26 Mb|
|ePub File Size:||7.70 Mb|
|Price:||Free* [*Free Regsitration Required]|
Upcoming Valve Industry Events Reprints. Each casting must be hydrostatically tested. Shale Work Up in U. This abstract is a brief summary of the referenced standard.
Castings shall be heat treated in accordance with the required procedure and heat-treat temperature. However, A imposes some additional requirements:.
Admiral Valve Announces Partnership with Diek. ViewIn Technology for Mechanical Seals. Custom Hydraulic Power Units.
Or Call 262-248-4461
Proper heat treatment of these alloys is usually necessary to enhance corrosion resistance and in some cases to meet mechanical properties. Each heat of material must be tensile tested. New Products Prev Next Rotork: ASTM A was reapproved without changes in New Washer Application Search Tool. Combining values from the two systems may result in nonconformance with the standard.
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.
Marking of heat numbers on castings is not required unless specified separately on the purchase order. Link to Active This link will always route to the current Active version of the standard.
Duplex Stainless Steel Investment Casting Compositions – Wisconsin Precision Casting
The Adventures of Duke Waters. Each casting must be marked with a heat atm or with a serial number traceable to a heat number. 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. A imposes several other requirements that are asym included in A nor A As such, many piping specifications include references to ASTM A and its various duplex grades for piping components such as valves.
A grades will not be added for the same reason. Castings shall be marked for material identification with the a980 designation and grade. Despite Oil Prices Post: What is the atsm between these specifications? Texas Manufacturing Expands Modestly, Outlook. Rigging and Lifting of Large Valves Post: In order to obtain a test report showing the actual chemistry and tensile test results, Supplementary Requirement S12 must also be imposed.
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.
Emerson Completes Acquisition of iSolutions Inc. The steel shall conform to the required chemical composition for carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, copper, tungsten, and nitrogen. Tensile tests are only required if Supplementary Requirement S32 is specified on the purchase order. Looking for a career in the Valve Industry? 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.
Any casting that meets A also meets A Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Emerson Completes Acquisition of iSolutions I. The material may be adopted in ASME codes for specific products or applications, including: A provides a definition for major weld repairs and requires post-weld heat treatment i.
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 asgm design is based. Historical Version s – view previous versions of standard. Monitoring Pressure Relief Devices Post: A valve company took exception, and indicated that duplex a90 bodies and bonnets would be supplied per ASTM A However, A imposes some additional requirements: 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.
Work Item s – proposed revisions of this standard. ASTM A lists tensile property requirements, but does not require that the tensile tests actually be performed.
A only requires post-weld heat treatment if Supplementary Requirement S33 is imposed on the purchase order. Certification must be provided listing the chemical analysis of the heat and the mechanical property test results. For this reason alone, many specifications that don’t require actual tensile testing are not represented in these codes.