This specification covers grades of nominal-wallthickness, stainless steel tubing for general corrosion-resisting and low- or high-temperature service, as designated. The tubing sizes and thicknesses usually furnished to this specification are 1⁄4 in. (6.4 mm) in inside diameter and larger and 0.020 in. (0.51 mm) in nominal wall-thickness and heavier. Mechanical property requirements do not apply to tubing smaller than 1⁄8 in. (3.2 mm) in inside diameter or 0.015 in. (0.38 mm) in thickness.
| Grades | UNS Designation |
|---|---|
| TP201 | S20100 |
| TP201LN | S20153 |
| TP304 | S30400 |
| TP304L | S30403 |
| TP304LN | S30453 |
| TP316 | S31600 |
| TP316L | S31603 |
| TP316LN | S31653 |
| TP317 | S31700 |
| TP321 | S32100 |
| TP347 | S34700 |
| TP348 | S34800 |
| TP XM - 10 | S21900 |
| TP XM - 15 | S38100 |
| TP XM - 19 | S20910 |
| TP XM - 29 | S24000 |
| - | S31254 |
| - | S31725 |
| - | S31726 |
| - | S31727 |
| - | S32053 |
| - | S30600 |
| - | S32654 |
| - | S34565 |
| - | S35045 |
| - | N08367 |
| - | N08926 |
| - | N08904 |