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ASTM A312/A312M-19
Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
Přeložit název
NORMA vydána dne 1.11.2019
Informace o normě:
Označení normy: ASTM A312/A312M-19
Poznámka: NEPLATNÁ
Datum vydání normy: 1.11.2019
Kód zboží: NS-975339
Počet stran: 13
Přibližná hmotnost: 39 g (0.09 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM A312/A312M-19 :
Keywords:
austenitic stainless steel, seamless steel pipe, stainless steel pipe, steel pipe, welded steel pipe,, ICS Number Code 23.040.10 (Iron and steel pipes)
Doplňující informace
| 1. Scope | ||||||||||||||||||||||||||
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1.1 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, ASME 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. 1.3 Optional supplementary requirements are provided for pipe where a greater degree of testing is desired. These supplementary requirements call for additional tests to be made and, when desired, it is permitted to specify in the order one or more of these supplementary requirements. 1.4 Table X1.1 lists the standardized dimensions of welded and seamless stainless steel pipe as shown in ASME B36.19. These dimensions are also applicable to heavily cold worked pipe. Pipe having other dimensions is permitted to be ordered and furnished provided such pipe complies with all other requirements of this specification. 1.5 Grades TP321 and TP321H have lower strength requirements for pipe manufactured by the seamless process in nominal wall thicknesses greater than 3/8 in. [9.5 mm]. 1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order. Note 2: The dimensionless designator NPS (nominal pipe size)
has been substituted in this standard for such traditional terms as
“nominal diameter,” “size,” and “nominal size.”
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||||||||||||||||||||
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