ASTM steel grades — 2441 designations — Page 3
Every grade designated under ASTM, with the material number it maps to, what kind of steel it is, its carbon window and how many other standards carry it. Open a grade for its full composition, properties and its designations in other standards. Unless marked, every name here is an indicative cross-reference, not an asserted identity — the grades are close, not interchangeable. 1 of 50 rows differ and carry a “This grade’s own name” mark.
Also known as
2441 designations| Grade | Material no. | Category | C% by weight | Also inother standards |
|---|---|---|---|---|
| A 182 Grade F91 | 1.4903 | High-temperature steels | 0.08–0.12 | 4 |
| A 194 Gr. 2 This grade’s own name | 1.1191 | Quenched and tempered steels | 0.42–0.5 | 21 |
| A 234 Grade WP1 | 1.5415 | Heat-resistant structural steels | 0.12–0.2 | 15 |
| A 234 Grade WP12 | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| A 234 Grade WP22 | 1.7380 | Heat-resistant structural steels | 0.08–0.14 | 20 |
| A 234 Grade WP5 | 1.7362 | Hydrogen resistant steels | 0.1–0.15 | 13 |
| A 234 Grade WP91 | 1.4903 | High-temperature steels | 0.08–0.12 | 4 |
| A 234 Grade WPA | 1.0305 | Unalloyed structural steels | ≤ 0.17 | 3 |
| A 234 Grade WPB | 1.0405 | Unalloyed structural steels | ≤ 0.21 | 3 |
| A 240 | 1.4876 | Heat resistant steels | ≤ 0.12 | 12 |
| A 268 TP405 | 1.4724 | Heat resistant steels | ≤ 0.12 | 15 |
| A 276 | 1.4306 | Stainless steels | ≤ 0.03 | 18 |
| A 283 Grade A | 1.0035 | Unalloyed structural steels | — | 22 |
| A 29 | — | — | — | 1 |
| A 29 1015 | 1.0234 | Unalloyed structural steels | 0.13–0.17 | 7 |
| A 312 Grade TP304 | 1.4301 | Stainless steels | ≤ 0.07 | 23 |
| A 312 Grade TP304L | 1.4306 | Stainless steels | ≤ 0.03 | 18 |
| A 312 Grade TP304L | 1.4307 | Stainless steels | ≤ 0.03 | 14 |
| A 312 Grade TP316 | 1.4401 | Stainless steels | ≤ 0.07 | 20 |
| A 312 Grade TP316 | 1.4436 | Stainless steels | ≤ 0.05 | 19 |
| A 312 Grade TP316L | 1.4404 | Stainless steels | ≤ 0.03 | 25 |
| A 312 Grade TP316L | 1.4435 | Stainless steels | ≤ 0.03 | 20 |
| A 312 Grade TP316LN | 1.4429 | Stainless steels | ≤ 0.03 | 12 |
| A 312 Grade TP321 | 1.4541 | Stainless steels | ≤ 0.08 | 25 |
| A 312 Grade TP347 | 1.4550 | Stainless steels | ≤ 0.08 | 15 |
| A 313 | 1.4504 | Others | ≤ 0.09 | 4 |
| A 313 | 1.4564 | Special steels for aviation and aerospace | ≤ 0.09 | 3 |
| A 313 | 1.4568 | Stainless steels | ≤ 0.09 | 12 |
| A 333 Grade 1 | 1.0356 | Others | — | 2 |
| A 333 Grade 3 | 1.5637 | Low-temperature structural steels | ≤ 0.15 | 11 |
| A 335 Grade P1 | 1.5415 | Heat-resistant structural steels | 0.12–0.2 | 15 |
| A 335 Grade P12 | 1.7335 | Heat-resistant structural steels | 0.08–0.18 | 22 |
| A 335 Grade P22 | 1.7380 | Heat-resistant structural steels | 0.08–0.14 | 20 |
| A 335 Grade P5 | 1.7362 | Hydrogen resistant steels | 0.1–0.15 | 13 |
| A 335 Grade P91 | 1.4903 | High-temperature steels | 0.08–0.12 | 4 |
| A 350 Grade LF2 | 1.0566 | Fine-grain structural steels | ≤ 0.18 | 11 |
| A 350 Grade LF3 | 1.5637 | Low-temperature structural steels | ≤ 0.15 | 11 |
| A 355 | — | — | — | 1 |
| A 403 Grade WP304 | 1.4301 | Stainless steels | ≤ 0.07 | 23 |
| A 403 Grade WP304L | 1.4306 | Stainless steels | ≤ 0.03 | 18 |
| A 403 Grade WP304L | 1.4307 | Stainless steels | ≤ 0.03 | 14 |
| A 403 Grade WP316 | 1.4401 | Stainless steels | ≤ 0.07 | 20 |
| A 403 Grade WP316 | 1.4436 | Stainless steels | ≤ 0.05 | 19 |
| A 403 Grade WP316L | 1.4404 | Stainless steels | ≤ 0.03 | 25 |
| A 403 Grade WP316LN | 1.4429 | Stainless steels | ≤ 0.03 | 12 |
| A 403 Grade WP316LN | 1.4435 | Stainless steels | ≤ 0.03 | 20 |
| A 403 Grade WP321 | 1.4541 | Stainless steels | ≤ 0.08 | 25 |
| A 403 Grade WP347 | 1.4550 | Stainless steels | ≤ 0.08 | 15 |
| A 405 P24 | 1.7715 | Heat-resistant structural steels | 0.1–0.18 | 8 |
| A 420 Grade WPL3 | 1.5637 | Low-temperature structural steels | ≤ 0.15 | 11 |
This grade’s own name — recorded in our sources as this grade’s own designation under that standard.
Indicative — taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.
Withdrawn — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.