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About This Item
Full Description
1.1 This specification covers straight seam and spiral butt seam welded unannealed austenitic stainless steel tubular products intended for low and moderate temperatures and corrosive service where heat treatment is not necessary for corrosion resistance. Table 1 lists the five grades covered by this specification. The user of this specification should be aware that a minimum amount of testing and examination is required of the basic product. The user requiring additional testing or examination is referred to the supplemental requirements or Ordering Information, or both. Users requiring a tubular product with post-weld heat treatment or with radiographic examination are referred to Specification A 312/A 312M, A 358/A 358M, or A 409/A 409M, as applicable.
1.2 This specification covers welded unannealed tubular products 3 in. (75 mm) through 48 in. (1200 mm) in outside diameter and in nominal wall thicknesses of 0.062 in. (1.5 mm) through 0.500 in. (12.5 mm) produced to this specification. Tubular products having other diameters or wall thickness, or both, may be furnished provided it complies with all other requirements of this specification.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
TABLE 1 Chemical Requirements
Grade | UNS DesignationA | Carbon maxB | Manga- nese, max | Phos- phorus, max | Composition, % | Titanium | Columbium Plus Tantalus | Nitrogen, max | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Sulfur, max | Silicon, max | Chromium | Nickel | |||||||||
TP 304L | S30403 | 0.030 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 8.0-13.0 | ... | ... | ... | 0.10 |
TP 316L | S31603 | 0.030 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00 3.00 | ... | ... | 0.10 |
TP 317L | S31703 | 0.030 | 2.00 | 0.045 | 0.030 | 1.00 | 18.0-20.0 | 11.0-15.0 | 3.0 4.0 | ... | ... | 0.10 |
TP 321 | S32100 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | ... | C | ... | ... |
TP 347 | S34700 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 | 9.0-12.0 | ... | ... | D | ... |
A New designation established in accordance with Practice E 527 and SAE J1086.
B The carbon analysis shall be reported to the nearest 0.01 %, except for the low carbon (0.030) types, which shall be reported to the nearest 0.001 %.
C The titanium content shall be not less than five times the carbon content and not more than 0.70 %.
D The columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.10 %.
Document History
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ASTM A778/A778M-24a
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Most Recent
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ASTM A778/A778M-24
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Historical Version
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ASTM A778/A778M-22
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Historical Version
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ASTM A778/A778M-16(2021)
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Historical Version
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ASTM A778/A778M-16
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Historical Version
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ASTM A778/A778M-15
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Historical Version
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ASTM A778-01(2009)e1
viewing
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Historical Version
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ASTM A778-01
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Historical Version
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ASTM A778-00
Standard Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products- Historical Version