ASTM A778 Stainless Steel Pipe

Application: ASTM A778 Standard Specification for Welded Unannealed Austenitic Stainless Steel Tubular Products covers straight seam and spiral butt seam welded unannealed austenitic stainless steel tubular products intended for low and moderate temperature and corros

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Introduction:

Specifications Range
Out Diameter 3"-48"
Wall Thickness 0.062"-0.500"

 

 

Specification:

TABLE 1 Chemical Requirements

Grade UNS Designation 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 %.

Application:

ASTM A778 Standard Specification for Welded Unannealed Austenitic Stainless Steel Tubular Products covers straight seam and spiral butt seam welded unannealed austenitic stainless steel tubular products intended for low and moderate temperature and corrosive service where treatment is not necessary for corrosion resistance.

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