Astm A269 Tubing Specifications
HT PIPE is one of well reputed ASTM A269 Tubing Suppliers, are the most versatile and widely used stainless steels. ASTM A269 Stainless Steel tube provides the best resistance to pitting and corrosion of any of the austenitic (300 series) stainless steels. It is extremely ductile, with excellent strength at elevated temperatures. It is ideal for hydraulic and instrumentation tubing in chemical, textile, and pulp and paper industries, and in marine environments.
ASTM A269 / A269M Standard
ASTM A269 tubing is for general service, usually, it is applied in equipment and instruments, also under low or high-temperature environments, therefore, ASME SA 269 tubing is also used for heat transfer equipment.
A269 Stainless Steel Tubing Material And Grades
ASME SA269 standard specifications indicate tube material is Austenitic Stainless Steel grades, which is widely used in stainless steel families, TP304, TP304L, TP316, TP316L, TP347, TP347H, TP321, TP321H, 904L grade is ideal material for various applications.
ASTM A269 Standard Seamless Tube Chemical Composition
| ASTM A269 Seamless Tubing Grades | UNS | C | Mn | P | S | Si | Cr | Ni | Mo |
| ASTM A269 304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | |
| ASTM A269 304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-13.0 | |
| ASTM A269 316 | S31600 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 |
| ASTM A269 316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
ASTM A269 Electropolish Tube Mechanical Properties
| Material | Heat | Temperure | Tensile Strength | Yield Strength | Elongation %, Min |
| Treatment | Min. | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| º F(º C) | |||||
| ASTM A269 304 | Solution | 1900 (1040) | 75(515) | 30(205) | 35 |
| ASTM A269 304L | Solution | 1900 (1040) | 70(485) | 25(170) | 35 |
| ASTM A269 316 | Solution | 1900(1040) | 75(515) | 30(205) | 35 |
| ASTM A269 316L | Solution | 1900(1040) | 70(485) | 25(170) | 35 |
Astm A269 Seamless Tube Sizes, Dimensions and Tolerances
ASTM A269 Stainless steel tubes are finished in accordance with customer needs regarding dimensional and wall thickness specifications as well as heat treatment for more demanding applications. In general a stainless steel seamless tube is manufactured in sizes from 1/2" to 8"NB according to current standards API, ASTM, and ASME.
Common Sizes Of A249/A269 Tubing
| O.D. | MM | WALL THICKNESS | MM | LENGTHS | Grades | Type | SPECIFICATIONS |
|---|---|---|---|---|---|---|---|
| 1/2" | 12.70 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 3/4" | 19.05 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 1" | 25.4 | 0.049" | 1.24 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 1" | 25.4 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 11/2" | 38.10 | 0.049" | 1.24 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 11/2" | 38.10 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 2" | 50.80 | 0.049" | 1.24 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 2" | 50.80 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 21/2" | 63.50 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 3" | 76.20 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 4" | 101.60 | 0.065" | 1.65 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 4" | 101.60 | 0.083" | 2.11 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 6" | 152.40 | 0.083" | 2.11 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 6" | 152.40 | 0.109" | 2.77 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
| 8" | 203.20 | 0.109" | 2.77 | 10′ – 20′ | 304/304L/316L | Welded | A249 / A269 / A270 |
Diameter Tolerance Astm A269 Tube
| NPS | ASTM A269 Tube OD Tolerance | |||
|---|---|---|---|---|
| + | – | |||
| inch | mm | inch | mm | |
| 1/8~1 1 /2 > 1 1 /2~4 > 4~8 > 8~18 > 18~26 > 26~34 > 34~48 |
1/64(0.015) 1/32(0.031) 1/16(0.062) 3/32(0.093) 1/8(0.125) 5/32(0.156) 3/16(0.187) |
0.4 0.8 1.6 2.4 3.2 4.0 4.8 |
1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) 1/32(0.031) |
0.8 0.8 0.8 0.8 0.8 0.8 0.8 |
Wall Thickness Tolerance Astm A269 Tubes
| NPS | ASTM A269 Tube Tolerance, % | |
|---|---|---|
| + | – | |
| 1/8-2 1 /2 | 20.0 | 12.5 |
| 3~18, t/D≤ 5% | 22.5 | 12.5 |
| 3~18, t/D> 5% | 15.0 | 12.5 |
| ≥ 20, welded | 17.5 | 12.5 |
| ≥ 20, seamless, t/D≤ 5% | 22.5 | 12.5 |
| ≥ 20, seamless, t/D> 5% | 15.0 | 12.5 |
Astm A269 Welded Tube Nondestructive Test
Each tube should be conducted to the nondestructive test or the hydrostatic test, in many cases, the nondestructive test refers to the eddy current test or air underwater test.
