ASTM A312 TP304L
Chemical Requirements: Composition, %, max
| Grade | TP304L(S30403) |
| Carbon | 0.035 a |
| Manganese | 2.00 |
| Phosphorus | 0.045 |
| Sulfur | 0.030 |
| Silicon | 1.00 |
| Chromium | 18.0-20.0 |
| Nickel | 8.0-13.0 |
a For small diameter or thin walls or both, where many drawing passes are required, a carbon maximum of 0.040 % is necessary in grades TP304L and TP316L. Small outside diameter tubes are defined as those less than 0.500 in. [12.7 mm] in outside diameter and light wall tubes as those less than 0.049 in. [1.20 mm] in average wall thickness (0.044 in. [1.10 mm] in minimum wall thickness).
Heat Treating Temperature: 1900 °F [1040 °C]
Tensile Requirements:
| Tensile Strength, min ksi [MPa] | 70 [485] |
| Yield Strength, min ksi [MPa] | 25 [170] |
Elongation in 2 in. or 50 mm (or 4D), min, %:
| Longitudinal | 35 |
| Transverse | 25 |