ASTM A790 PDF

Wall thickness:1 mmmm 3. Length: 6 metre or as per customer request Duplex stainless steels are extremely corrosion resistant, work hardenable alloys. Their microstructures consist of a mixture of austenite and ferrite phases. As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels. This combination of properties can mean some compromise when compared with pure austenitic and pure ferritic grades. Duplex stainless steels are in most cases, tougher than ferritic stainless steels.

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Wall thickness:1 mmmm 3. Length: 6 metre or as per customer request Duplex stainless steels are extremely corrosion resistant, work hardenable alloys. Their microstructures consist of a mixture of austenite and ferrite phases.

As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels. This combination of properties can mean some compromise when compared with pure austenitic and pure ferritic grades. Duplex stainless steels are in most cases, tougher than ferritic stainless steels. Strengths of duplex stainless steels can in some cases be double that for austenitic stainless steels.

The duplex stainless steels are considered resistant to stress corrosion cracking, they are not as resistant to this form of attack as ferritic stainless steels. However, the corrosion resistance of the least resistant duplex stainless steels is greater than that for the most commonly used grades of stainless steels, i. Duplex stainless steels are also magnetic, a property that can be used to easily differentiate them from common austenitic grades of stainless.

It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this datasheet.

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Duplex Stainless Steel Pipe ASTM A789 / ASTM A790 / ASTM A928 UNS S31803

Where ellipses Product Analysis 1. An analysis of either one billet or one length of flat-rolled stock or one tube shall be made from each heat. The chemical composition thus determined shall conform to the requirements specified. The product analysis tolerance is not applicable to the carbon content for material with a specified maximum carbon of 0. If the original test for product analysis fails, retests of two additional billets, lengths of flat-rolled stock, or tubes shall be made. Both retests for the elements in question shall meet the requirements of this specification; otherwise, all remaining material in the heat shall be rejected or, at the option of the producer, each billet or tube may be individually tested for acceptance.

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ASTM A790/A790M

It finds applications due to both excellent corrosion resistance and high strength. The standard duplex S composition has over the years been refined by many steel suppliers, and the resulting restricted composition range was endorsed as UNS S in Duplex S gives better guaranteed corrosion resistance, but for much of the Duplex S currently produced also complies with Duplex S Duplex Applications Chemical processing, transport and storage, Oil and Gas exploration and processing equipment, Marine and other high chloride environments, Pulp and paper digesters, liquor tanks and paper machines.

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ASTM A790 Duplex Steel UNS S31803 Pipe

More A The pipe shall be made by the seamless or an automatic welding process, with no addition of filler metal in the welding operation. Heat analysis shall be made to determine the percentages of the elements specified. Tension tests, hardening tests, flattening tests, hydrostatic tests and nondestructive electric tests shall be made to conform to the specified requirements.

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Stainless Steel and Duplex Pipe (ASTM A312, A790)

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