ASTM A269 Stainless Steel Tube
ASTM A269 Welded Austenitic Stainless Steel Tube
- International Standard : ASTM A269 / ASME SA269
- Material Grades : TP304/304L, TP316/316L, TP309/309S, TP310/310S, TP321/321H, TP347/347H, Duplex2205 / S31803, etc.
- Outer Diameter : 1/4″ - 12" , 6.35mm - 304.8mm
- Wall Thickness : 0.035″ - 0.12″ , 0.89mm - 3.05mm , Schedules: 10s, 20, 40s, 40, 60, 80s
- Tube Type : Welded , Seamless
- Mill Test Certificate(MTC) : EN10204 3.1
- Certificate : ISO 9001:2015 , PED 2014/68/EU , AD 2000-WO
Description of ASTM A269 Stainless Steel Tube
ASTM A269 Stainless Steel Tube is a comprehensive standard established by ASTM International that specifies the requirements for seamless and welded austenitic stainless steel tubing intended for general corrosive service and moderate temperature applications. This standard is one of the most widely used and referenced specifications for stainless steel tubing across countless industries. It is crucial to understand that A269 is a general service specification. Unlike standards like A249 (for heat exchangers) or A213 (for boiler tubes), A269 tubes are not primarily designed for high-pressure applications. Instead, their focus is on corrosion resistance, cleanliness, and dimensional precision for a vast array of mechanical, process, and structural uses.
ASTM A269 is a comprehensive standard established by ASTM International that specifies the requirements for seamless and welded austenitic stainless steel tubing intended for general corrosive service and moderate temperature applications. This standard is one of the most widely used and referenced specifications for stainless steel tubing across countless industries. It is crucial to understand that A269 is a general service specification. Unlike standards like A249 (for heat exchangers) or A213 (for boiler tubes), A269 tubes are not primarily designed for high-pressure applications. Instead, their focus is on corrosion resistance, cleanliness, and dimensional precision for a vast array of mechanical, process, and structural uses.
Dimension of ASTM A269 Stainless Steel Tubes
| Tube OD | Wall Thickness | OD Tolerance | WT Tolerance | Length Tolerance | Weight |
|---|---|---|---|---|---|
| inch(mm) | inch(mm) | inch(mm) | inch(mm) | (kg/m) | |
| 1/4" (6.35) | 0.035" (0.89) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.124 |
| 1/2" (12.7) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.454 |
| 3/4" (19.1) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.717 |
| 1" (25.4) | 0.065" (1.65) / 0.049"(1.25) | +/-0.005" (0.13) | +/-10.0% | +1/8" (3.18) -0 | 0.976 |
| 1-1/2" (38.1) | 0.065" (1.65) / 0.049"(1.25) | +/-0.008" (0.20) | +/-10.0% | +1/8" (3.18) -0 | 1.50 |
| 2" (50.8) | 0.065" (1.65) / 0.049"(1.25) | +/-0.008" (0.20) | +/-10.0% | +1/8" (3.18) -0 | 2.02 |
| 2-1/2" (63.5) | 0.065" (1.65) | +/-0.010" (0.25) | +/-10.0% | +1/8" (3.18) -0 | 2.54 |
| 3" (76.2) | 0.065" (1.65) | +/-0.010" (0.25) | +/-10.0% | +1/8" (3.18) -0 | 3.06 |
| 4" (101.6) | 0.083" (2.11) | +/-0.015" (0.38) | +/-10.0% | +1/8" (3.18) -0 | 5.23 |
| 6" (152.4) | 0.109" (2.77) | +/-0.030" (0.76) | +/-10.0% | +1/8" (3.18) -0 | 10.32 |
| 8" (203.2) | 0.109" (2.77) | +/-0.030" (0.76) | +/-10.0% | +1/8" (3.18) -0 | 13.86 |
| 10"(254) | 0.120"(3.05) | +/-0.040" (1.016) | +/-10.0% | +1/8" (3.18) -0 | - |
| 12"(304.8) | 0.120"(3.05) | +/-0.040" (1.016) | +/-10.0% | +1/8" (3.18) -0 | - |
Chemical Composition
| TUBE GRADES | UNS | Cr | Ni | Mo | C | P | S | Mn | Si |
| TP304 | S30400 | 18.0-20.0 | 8.0-11.0 | – | 0.08 | 0.045 | 0.03 | 2 | 1 |
| TP304L | S30403 | 18.0-20.0 | 8.0-13.0 | – | 0.035 | 0.045 | 0.03 | 2 | 1 |
| TP316 | S3160 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | 0.08 | 0.045 | 0.03 | 2 | 1 |
| TP316L | S31603 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.035 | 0.045 | 0.03 | 2 | 1 |
Tensile Properties
| Material | Heat Treatment | Yield Strength Ksi (MPa), Min. | Tensile Strength Ksi (MPa), Min. | Temperure Min. ℉(℃) | Elongation %, Min |
| ASME SA270 304 | Solution | 30(205) | 75(515) | 1900 (1040) | 35 |
| ASME SA270 304L | Solution | 25(170) | 70(485) | 1900 (1040) | 35 |
| ASME SA270 316 | Solution | 30(205) | 75(515) | 1900(1040) | 35 |
| ASME SA270 316L | Solution | 25(170) | 70(485) | 1900(1040) | 35 |
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