SA 269 Stainless Steel


ASTM A269 TP316L Stainless Steel Seamless Tube

ASTM A269 / A269M Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service

Chemical Properties:

  • Carbon: n/a
  • Manganese: n/a
  • Potassium: n/a
  • Sulfur: n/a
  • Silicon: n/a
  • Nickel: n/a
  • Chromium: n/a
  • Molybdenum: n/a

Mechanical Properties:

The ASTM A269 specification covers nominal-wall-thickness, seamless and welded austenitic steel tubing for general corrosion-resisting and low- or high-temperature service.

Upon completion, all material shall:

ASTM A269 tubing is for general service, usually, it is applied in equipment and instruments, also under low or high temperature environment, therefore, ASTM A269 tubing is also used for heat transfer equipment.

Size Tolerances

ASTM A269 welded tube dimensional tolerance are in accordance with ASTM A1016 specification, wall thickness tolerance is +/-10% of thickness, comparing with ASTM A269 tube size tolerance as follow.

Standard OD WTH L
ASTM A269 <38.1mm ±0.13mm OD<12.7mm ±15%
OD≥12.7mm ±10%
OD<38.1mm +3.20mm -0mm
OD≥38.1mm +4.80 -0mm
≥38.1mm~88.9mm ±0.25mm
≥88.9mm~139.7mm ±0.38mm
≥139.7mm~203.7mm ±0.76mm
≥203.7mm~304.8mm ±1.01mm
≥304.8mm~355.6mm ±1.26mm

Tube Type ( Manufacture Process)

ASTM A269 tubes should be welded type or seamless type, which is made in cold finished or hot finished.

Boiler pipe

More specifically, the ASTM A269 specification is intended for uses such as:

Upon complete, the material shall :

316 / 316L Stainless Steel Chemical Composition

Grade C Mn P S Si Ni Cr Mo
316 0.08 2.00 0.045 0.030 1.0 11-14 16-18 2-3
316L 0.035 2.00 0.045 0.030 1.0 10-14 16-18 2-3

316 / 316L Mechanical Property

Grade Tensile Strength(Mpa) Yield Point(Mpa) Elongation(%) Elongation(%)
316L 485 170 35 25
316 515 205 35 25

ASTM A269 TP316L Stainless Steel Tubing Application

From TP316L chemical composition and mechanical property data sheet, TP316L is obvious a ideal material in high temperature and corrosion environment, excellent corrosion resistance performance in wide applications.



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