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ASTM Standards::} 70 Test Methods and Definitions for Mechanical Testing of Steel Products. 3. Terminology. Definitions—For definitions of terms used. Chemical and mechanical properties of ASTM A duplex and super-duplex pipe materials. What is duplex steel, use cases, corrosion resistance vs. SS. ASTM A/AM: Standard Specification for Seamless and Welded Ferritic/ Austenitic Stainless Steel Pipe.

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ASTM International takes no position respecting the validity of any s790 rights asserted in connection with any item mentioned in this standard. No pipe shall be less than the specied length and no more than 14 in. The test system settings may be changed or the transducer scoil sor sensor s adjusted and the unit restandardized. This abstract is astmm brief summary of the referenced standard. When bright annealing is used, pickling is not necessary.

UNS s Pipes Tubes. Duplex Steel Products: Duplex Steel Sheet Plates Manufacturers Tension tests, hardening tests, flattening tests, hydrostatic tests and nondestructive electric tests shall be made to conform to the specified requirements. The area producing the signal may be reexamined. If this supplementary requirement is specied, the number of tests per pipe required shall also be specied.

Usually use Pitting Corrosion Test. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

Duplex is s790 nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the series stainless steels. The inch-pound units shall apply unless the M designation of this specication is specied in the order.


Pipe shall be welded in one pass by processes employing filler metal and shall be completely radiographed. To be accepted, a repaired pipe must pass the same non-destructive test by which it was rejected, and it must meet the a7900 wall thickness requirements of this specication.

Duplex stainless steel plate USE: Combining values from the two systems may result in nonconformance with the specication. But all pipe tested since the last acceptable standardization must be retested for acceptance.

Crops ends may be used. A steel pipes piping.

ASTM A ASTM SA Duplex Steel Seamless Tubing Tubes India – Citizen Metals

Within the text, the SI units are shown in brackets. Lean Duplex Steel – e.

The methods used for cleaning and preparing the surfaces for examination shall not be detrimental to the base metal or the surface nish. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures. Duplex Steel and Pipe.

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To be accepted, retested pipe satm meet the test requirement. ASME SA Ferritic Stainless Steel Welded Pipes has a higher yield strength and lower ductility than the austenitic steels so fabricators may find that higher forming forces, increased radius of bending, and increased allowance for spring back are necessary.

It is highly suitable for usage in marine environments. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. 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. Could adtm replaced by ECT. If the equipment contains a asym notice lter setting, this shall remain off during calibration and testing unless linearity can be demonstrated at that setting.


Home Contact Us Back to Top. The high chromium, molybdenum and nitrogen contents of provide corrosion resistance superior to common stainless steels, such as, L and L in most aetm and Citizen Metals has been actively involved in ensuring the best quality of the same to our clients.

ASTM A790 Seamless and Welded Pipe

The primary reason for this is the priority that we give to complete satisfaction of the customer. The dimensionless designator NPS nominal pipe size axtm been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size. Originally approved in Transverse Tension Tests S2. 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.

These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures. The dimensionless designator Nominal Pipe Size nominal pipe size has been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size.

Unless specically called out by the purchaser, the selection of the nondestructive electric test will be at the option of the manufacturer. In order for you to see this page as it is meant to appear, we ask that you please re-enable your Javascript! Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.

Duplex Steel Flangesand Grades.