ASTM A 312/A 312M-15b Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

Publisher: ASTM
Publish Date: 2015
Pages: 13
Language: English
Format: PDFDocument Scope1.1 This specification2 covers seamless, straight-seam
welded, and heavily cold worked welded austenitic stainless
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
TP304, TP304L, and TP347 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].1.2 Grades TP304H, TP309H, TP309HCb, TP310H,
TP310HCb, TP316H, TP321H, TP347H, and TP348H are
modifications of Grades TP304, TP309Cb, TP309S, TP310Cb,
TP310S, TP316, TP321, TP347, and TP348, and are intended
for service at temperatures where creep and stress rupture
properties are important.