ASTM International

Standard Specification for Single- or Double-Welded Austenitic Stainless Steel Pipe
 N A813/A813M

Annotation

This specification covers two classes of fit-up and alignment quality straight-seam single- or double-welded austenitic steel pipe intended for high-temperature and general corrosive service.

NOTE 1—When the impact test criterion for a low-temperature service would be 15 ft·lbf [20 J] energy absorption or 15 mils [0.38 mm] lateral expansion, some of the austenitic stainless steel grades covered by this specification are accepted by certain pressure vessel or piping codes without the necessity of making the actual test. For example, Grades 304, 304L, and 347 are accepted by the ASME Pressure Vessel Code, Section VIII Division 1, and by the Chemical Plant and Refinery Piping Code, ANSI B31.3 for service at temperatures as low as 425 °F [ 250 °C] without qualification by impact tests. Other AISI stainless steel grades are usually accepted for service temperatures as low as 325 °F [ 200 °C] without impact testing. Impact testing may, under certain circumstances, be required. For example, materials with chromium or nickel content outside the AISI ranges, and for material with carbon content exceeding 0.10 %, are required to be impact tested under the rules of ASME Section VIII Division 1 when service temperatures are lower than 50 °F [ 45 °C]

Grades TP304H, TP304N, TP316H, TP316N, TP321H, TP347H, and TP348H are modifications of Grades TP304, TP316, TP321, TP347, and TP348, and are intended for high-temperature service.

Two classes of pipe are covered as follows:

Class SW—Pipe, single-welded with no addition of filler metal and

Class DW—Pipe, double-welded with no addition of filler metal.