A-269 Seamless

A269 specification for seamless and welded Austenitic stainless steel tubing for general service. This specification covers grades of nominal-wall-thickness, stainless steel tubing for general corrosion-resisting and low- or high-temperature service.

Typical Chemical Properties
304 304L 316 316L
Carbon, max, % 0.08 0.035* 0.08 0.035*
Manganese, Max, % 2.00 2.00 2.00 2.00
Phosphorous, Max, % 0.045 0.045 0.045 0.045
Sulfur, Max, % 0.03 0.03 0.03 0.03
Silicon, Max, % 1.00 1.00 1.00 1.00
Chromium, % 18.0 – 20.0 18.0 – 20.0 16.0 – 18.0 16.0 – 18.0
Nickel, % 8.0 – 11.0 8.0 – 12.0 10.0 – 14.0 10.0 – 14.0
Molybdenum, % 0 0 2.00 – 3.00 2.00 – 3.00
Typical Mechanical Properties
Typical Mechanical Properties 304 304L 316 316L
Tensile Strength Minimum ksi (MPa) 75 (515) 70 (485) 75 (515) 70 (485)
Yield Strength Minimum ksi (MPa) 30 (205) 25 (170) 30 (205) 25 (170)
Elongation Min 35% 35 35% 35
Rockwell Hardness Number, maximum B90 B90 B90 B90
Typical Permissible Variations
Size, Outside Diameter, (inch) Typical Permissible Variations in Outside Diameter Typical Permissible Variations in Wall Thickness
Up to .500 +/-.005" +/- 15 %
.501 to 1.499 +/-.005" +/- 10 %
1.500 to 3.499 +/-.010" +/- 10 %
3.500 to 5.499 +/-.015" +/- 10 %
5.500 to 7.999 +/-.030" +/- 10 %
8.000 to 11.999 +/-.040" +/- 10 %
12.000 to 14.000 +/-.050" +/- 10 %

* for small diameter or thin walls or both Carbon maximum is 0.040 %
Information provided is “Typical” for specific requirements please inquire.