ASTM A/AM: Standard Specification for Castings, Austenitic-Ferritic ( Duplex) Stainless Steel, for Pressure-Containing Parts. Designation: A/AM − 13Standard Specification for Castings, Austenitic- Ferritic (Duplex) Stain. CD3MN; 4A. Cast UNS: J Cast Grade: CD3MN; 4A. Cast ASTM: A, A, 4A (CENT, INVEST, SAND). Wrought UNS: S Wrought Grade:

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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. Shale Work Up in U. Thanks for your interesting, but Article is protected! A is no longer used for pressure retaining castings. Duplex S provides excellent guaranteed corrosion resistance, but it should be noted axtm of the Duplex S currently produced also dual conforms with Duplex S A only requires post-weld heat treatment if Supplementary Requirement S33 is imposed on the purchase order.

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. This alloy resists chloride environments and sulfide stress corrosion.

Duplex AF51 is equivalent to: However, A imposes some additional requirements:. You can click the Top Right email! Each casting must be hydrostatically tested.

Each casting must be marked with a heat number or with a serial number traceable to a heat number. Lost Foam Castings Lost foam casting products, ductile iron pipe fittings, valves Low Pressure Die Castings Adtm pressure die casting products, mainly aluminum alloy casting products.


Heat and product analyses shall be performed wherein specimens asrm conform to required chemical composition of carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, copper, tungsten, and nitrogen.

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This specification covers austenitic-ferritic duplex stainless steel castings for valves, flanges, fittings, and other pressure-containing parts. New Products Prev Next Rotork: As such, many piping specifications include references to ASTM A and its various duplex grades for piping components such as valves.

However, A imposes some additional requirements: Despite Oil Prices Post: Benefits of using Duplex Stainless Steel Similar corrosion resistance to Type Greater tensile and yield strength Good ductility and toughness Good stress corrosion cracking resistance SSC Duplex stainless steel is designed to combine improved resistance to stress corrosion cracking including sulfide stress corrosion crackingpitting, crevice corrosion and high strength when compared with other stainless alloys.

Combining values from a995 two systems may result in atsm with the standard. Z995 standard duplex S A F51 composition has been refined over many years, and the resulting composition range was endorsed as UNS S in Upcoming Valve Industry Events Reprints.

Duplex Stainless Steels │ Alloy Guide │ MetalTek

Admiral Valve Announces Partnership with Diek. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

All steels shall undergo tension test, and shall conform to the following mechanical requirements: ASTM A lists tensile property requirements, but does not require that the tensile tests actually be performed. It finds applications due to both excellent corrosion resistance and high strength. This abstract is a brief summary of the referenced standard.


Gravity Die Castings Die casting products, mainly are cast aluminum alloy and zinc alloy with good dimensions. Work Item s – proposed revisions of this standard. Duplex stainless steel is designed to combine improved resistance to stress corrosion cracking including sulfide stress corrosion crackingpitting, crevice corrosion and high strength when compared with other stainless alloys.

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 steel castings shall be heat-treated up to required temperature asym shall undergo water quenching or rapid cooling by other means after heating. Any casting that meets A also meets A In order to obtain a test report showing the actual chemistry and tensile test results, Supplementary Requirement S12 must also be imposed.

Related Standard duplex stainless steel. ASTM A was reapproved without changes in satm Material casting Material technology, such as ductile iron, carbon steel, gray iron, stainless steel, malleable iron and alloy.

A grades will not be added for the same reason. It can get stability density castings for high pressure purpose. Emerson Completes Acquisition of iSolutions Inc.

Marking of heat numbers on castings is not required unless specified separately on the purchase order. It is also roughly double the strength of standard austentic s995 steels.

The grades of steels covered here are: K November 21, at 8: