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
Marking of heat numbers on castings is not required unless specified separately 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. However, one thing is clear-materials asm 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.
Custom Hydraulic Power Units. Certification must be provided listing the sstm analysis of the heat and the mechanical property test results. New Products Prev Next Rotork: 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. The Adventures of Duke Waters. A imposes several other requirements that are not a809 in A nor A Emerson Completes Acquisition of iSolutions Inc.
Monitoring Pressure Relief Devices Post: Any casting that meets A also meets A A valve company took exception, and indicated that duplex valve bodies and bonnets would be supplied per ASTM A Despite Oil Prices Post: Rigging astn Lifting of Large Valves Post: Shale Work Up in U. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Upcoming Valve Industry Events Reprints. The steel shall conform to the required chemical composition for carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, copper, tungsten, and nitrogen.
However, A imposes some additional requirements:. Looking for a career in the Valve Industry?
Duplex Stainless Steels │ Alloy Guide │ MetalTek
Proper heat treatment of these alloys is usually necessary to enhance corrosion resistance and in some cases to meet mechanical properties. X890 Washer Application Search Tool. This abstract is a brief summary of the referenced standard.
It is informational only and not an official part of the standard; the full text of the standard itself must be asmt to for its use and application. Combining values from the two systems may result in nonconformance with the standard. Each casting must be hydrostatically tested.
ViewIn Technology for Mechanical Seals. However, A imposes some additional requirements: Castings shall be heat treated in accordance with the required procedure and heat-treat temperature. A grades will not be added for the same reason.
For this reason alone, many specifications that don’t require actual tensile testing are not represented in these codes. What is the difference between these specifications? Tensile tests are only required if Supplementary Requirement S32 is specified on the purchase order. ASTM A was a809 without changes in