ASTM A312 TP304L Stainless Steel for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes 1.1 This specification2 covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.
Grade | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness | |
Rockwell (HR B) | Brinell (HB) | ||||
304 | 515 | 205 | 40 | 92 | 201 |
304L | 485 | 170 | 40 | 92 | 201 |
304H | 515 | 205 | 40 | 92 | |
ASTM A312 TP304L Stainless Steel for Seamless pipes
| NPS | Outside Diameter | Nominal Wall Thickness | |||
| Sch5s | Sch10s | Sch40s | Sch80s | ||
| 1/8″ | 10.3 | – | 1.24 | 1.73 | 2.41 |
| 1/4″ | 13.7 | – | 1.65 | 2.24 | 3.02 |
| 3/8″ | 17.1 | – | 1.65 | 2.31 | 3.2 |
| 1/2″ | 21.3 | 1.65 | 2.11 | 2.77 | 3.73 |
| 3/4″ | 26.7 | 1.65 | 2.11 | 2.87 | 3.91 |
| 1″ | 33.4 | 1.65 | 2.77 | 3.38 | 4.55 |
| 11/4″ | 42.2 | 1.65 | 2.77 | 3.56 | 4.85 |
| 11/2″ | 48.3 | 1.65 | 2.77 | 3.68 | 5.08 |
| 2″ | 60.3 | 1.65 | 2.77 | 3.91 | 5.54 |
| 21/2″ | 73 | 2.11 | 3.05 | 5.16 | 7.01 |
| 3″ | 88.9 | 2.11 | 3.05 | 5.49 | 7.62 |
| 31/2″ | 101.6 | 2.11 | 3.05 | 5.74 | 8.08 |
| 4″ | 114.3 | 2.11 | 3.05 | 6.02 | 8.56 |
| 5″ | 141.3 | 2.77 | 3.4 | 6.55 | 9.53 |
| 6″ | 168.3 | 2.77 | 3.4 | 7.11 | 10.97 |
| 8″ | 219.1 | 2.77 | 3.76 | 8.18 | 12.7 |
| 10″ | 273 | 3.4 | 4.19 | 9.27 | 12.7 |
| 12″ | 323.9 | 3.96 | 4.57 | 9.53 | 12.7 |
| 14″ | 355.6 | 3.96 | 4.78 | – | – |
| 16″ | 406.4 | 4.19 | 4.78 | – | – |
| 18″ | 457 | 4.19 | 4.78 | – | – |
| 20″ | 508 | 4.78 | 5.54 | – | – |
| 22″ | 559 | 4.78 | 5.54 | – | – |
| 24″ | 610 | 5.54 | 6.35 | – | – |
| 30″ | 762 | 6.35 | 7.92 | – | – |