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Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
Automaticky přeložený název:
Standardní specifikace pro bezešvé a svařované a martensitickou nerezové trubice pro všeobecné služby
NORMA vydána dne 1.4.2010
Označení normy: ASTM A268/A268M-10
Poznámka: NEPLATNÁ
Datum vydání normy: 1.4.2010
Kód zboží: NS-1821
Počet stran: 7
Přibližná hmotnost: 21 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
ferritic stainless steel, seamless steel tube, stainless steel tube, steel tube, welded steel tube, Ferritic steel tube--specifications, Martensitic stainless steel tube--specifications, Seamless steel tube--specifications, Stainless steel tube--specifications, Welded steel tube--specifications, ICS Number Code 23.040.10 (Iron and steel pipes)
1. Scope | ||||||||||
1.1 This specification covers a number of grades of nominal-wall-thickness, stainless steel tubing for general corrosion-resisting and high-temperature service. Most of these grades are commonly known as the “straight-chromium” types and are characterized by being ferromagnetic. Two of these grades, TP410 and UNS S 41500 (Table 1), are amenable to hardening by heat treatment, and the high-chromium, ferritic alloys are sensitive to notch-brittleness on slow cooling to ordinary temperatures. These features should be recognized in the use of these materials. Grade TP439 is used primarily for hot-water tank service and does not require post-weld heat treatment to prevent attack of the heat affected zone. 1.2 An optional supplementary requirement is provided, and when desired, shall be so stated in the order. 1.3 The values stated in either inch-pound units or SI 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. |
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2. Referenced Documents | ||||||||||
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