--- title: "ASTM steel grades — 2441 designations — Page 3" description: "Steel grades designated under ASTM, with chemical composition, mechanical properties and equivalents in other standards. 2441 designations across…" canonical: https://steelequivalents.com/materials/astm/page/3 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/astm/page/3.md cs: https://steelequivalents.com/cs/materiály/astm.md de: https://steelequivalents.com/de/werkstoffe/astm.md es: https://steelequivalents.com/es/materiales/astm.md fr: https://steelequivalents.com/fr/matériaux/astm.md hu: https://steelequivalents.com/hu/anyagok/astm.md it: https://steelequivalents.com/it/materiali/astm.md nl: https://steelequivalents.com/nl/materialen/astm.md pl: https://steelequivalents.com/pl/materiały/astm.md pt: https://steelequivalents.com/pt/materiais/astm.md ru: https://steelequivalents.com/ru/материалы/astm.md tr: https://steelequivalents.com/tr/malzemeler/astm.md zh: https://steelequivalents.com/zh/材料/astm.md ja: https://steelequivalents.com/ja/材料/astm.md ar: https://steelequivalents.com/ar/المواد/astm.md ko: https://steelequivalents.com/ko/재료/astm.md pt-br: https://steelequivalents.com/pt-br/materiais/astm.md hi: https://steelequivalents.com/hi/सामग्री/astm.md content_hash: sha256:d97a566e8d63b439f94cfb9d54a368976dba7da4303d3fdabe0dd920dadf052b generated: 2026-09-24 --- > **Machine-readable Markdown rendering.** This is a Markdown representation of a web page, > served for AI agents and crawlers as a token-efficient alternative to the full HTML. > Full interactive HTML version: https://steelequivalents.com/materials/astm/page/3 > Canonical URL: https://steelequivalents.com/materials/astm/page/3 > Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi > Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything > below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. ASTM · 2,441 grades # 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 in other standards | |---|---|---|---|---| | [A 182 Grade F91](/materials/astm/a-182-grade-f91 "A 182 Grade F91") | [1.4903](/materials/material-no/1.4903 "1.4903") | High-temperature steels | 0.08–0.12 | 4 | | [A 194 Gr. 2](/materials/astm/a-194-gr-2 "A 194 Gr. 2") This grade’s own name | [1.1191](/materials/material-no/1.1191 "1.1191") | Quenched and tempered steels | 0.42–0.5 | 21 | | [A 234 Grade WP1](/materials/astm/a-234-grade-wp1 "A 234 Grade WP1") | [1.5415](/materials/material-no/1.5415 "1.5415") | Heat-resistant structural steels | 0.12–0.2 | 15 | | [A 234 Grade WP12](/materials/astm/a-234-grade-wp12 "A 234 Grade WP12") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [A 234 Grade WP22](/materials/astm/a-234-grade-wp22 "A 234 Grade WP22") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [A 234 Grade WP5](/materials/astm/a-234-grade-wp5 "A 234 Grade WP5") | [1.7362](/materials/material-no/1.7362 "1.7362") | Hydrogen resistant steels | 0.1–0.15 | 13 | | [A 234 Grade WP91](/materials/astm/a-234-grade-wp91 "A 234 Grade WP91") | [1.4903](/materials/material-no/1.4903 "1.4903") | High-temperature steels | 0.08–0.12 | 4 | | [A 234 Grade WPA](/materials/astm/a-234-grade-wpa "A 234 Grade WPA") | [1.0305](/materials/material-no/1.0305 "1.0305") | Unalloyed structural steels | ≤ 0.17 | 3 | | [A 234 Grade WPB](/materials/astm/a-234-grade-wpb "A 234 Grade WPB") | [1.0405](/materials/material-no/1.0405 "1.0405") | Unalloyed structural steels | ≤ 0.21 | 3 | | [A 240](/materials/astm/a240 "A 240") | [1.4876](/materials/material-no/1.4876 "1.4876") | Heat resistant steels | ≤ 0.12 | 12 | | [A 268 TP405](/materials/astm/a-268-tp405 "A 268 TP405") | [1.4724](/materials/material-no/1.4724 "1.4724") | Heat resistant steels | ≤ 0.12 | 15 | | [A 276](/materials/astm/a276 "A 276") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [A 283 Grade A](/materials/din-en/a-283-grade-a "A 283 Grade A") | [1.0035](/materials/material-no/1.0035 "1.0035") | Unalloyed structural steels | — | 22 | | [A 29](/materials/astm/a-29 "A 29") | — | — | — | 1 | | [A 29 1015](/materials/astm/a-29-1015 "A 29 1015") | [1.0234](/materials/material-no/1.0234 "1.0234") | Unalloyed structural steels | 0.13–0.17 | 7 | | [A 312 Grade TP304](/materials/astm/a-312-grade-tp304 "A 312 Grade TP304") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [A 312 Grade TP304L](/materials/astm/a-312-grade-tp304l "A 312 Grade TP304L") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [A 312 Grade TP304L](/materials/astm/a-312-grade-tp304l "A 312 Grade TP304L") | [1.4307](/materials/material-no/1.4307 "1.4307") | Stainless steels | ≤ 0.03 | 14 | | [A 312 Grade TP316](/materials/astm/a-312-grade-tp316 "A 312 Grade TP316") | [1.4401](/materials/material-no/1.4401 "1.4401") | Stainless steels | ≤ 0.07 | 20 | | [A 312 Grade TP316](/materials/astm/a-312-grade-tp316 "A 312 Grade TP316") | [1.4436](/materials/material-no/1.4436 "1.4436") | Stainless steels | ≤ 0.05 | 19 | | [A 312 Grade TP316L](/materials/astm/a-312-grade-tp316l "A 312 Grade TP316L") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [A 312 Grade TP316L](/materials/astm/a-312-grade-tp316l "A 312 Grade TP316L") | [1.4435](/materials/material-no/1.4435 "1.4435") | Stainless steels | ≤ 0.03 | 20 | | [A 312 Grade TP316LN](/materials/astm/a-312-grade-tp316ln "A 312 Grade TP316LN") | [1.4429](/materials/material-no/1.4429 "1.4429") | Stainless steels | ≤ 0.03 | 12 | | [A 312 Grade TP321](/materials/astm/a-312-grade-tp321 "A 312 Grade TP321") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [A 312 Grade TP347](/materials/astm/a-312-grade-tp347 "A 312 Grade TP347") | [1.4550](/materials/material-no/1.4550 "1.4550") | Stainless steels | ≤ 0.08 | 15 | | [A 313](/materials/astm/a313 "A 313") | [1.4504](/materials/material-no/1.4504 "1.4504") | Others | ≤ 0.09 | 4 | | [A 313](/materials/astm/a313 "A 313") | [1.4564](/materials/material-no/1.4564 "1.4564") | Special steels for aviation and aerospace | ≤ 0.09 | 3 | | [A 313](/materials/astm/a313 "A 313") | [1.4568](/materials/material-no/1.4568 "1.4568") | Stainless steels | ≤ 0.09 | 12 | | [A 333 Grade 1](/materials/astm/a-333-grade-1 "A 333 Grade 1") | [1.0356](/materials/material-no/1.0356 "1.0356") | Others | — | 2 | | [A 333 Grade 3](/materials/astm/a-333-grade-3 "A 333 Grade 3") | [1.5637](/materials/material-no/1.5637 "1.5637") | Low-temperature structural steels | ≤ 0.15 | 11 | | [A 335 Grade P1](/materials/astm/a-335-grade-p1 "A 335 Grade P1") | [1.5415](/materials/material-no/1.5415 "1.5415") | Heat-resistant structural steels | 0.12–0.2 | 15 | | [A 335 Grade P12](/materials/astm/a-335-grade-p12 "A 335 Grade P12") | [1.7335](/materials/material-no/1.7335 "1.7335") | Heat-resistant structural steels | 0.08–0.18 | 22 | | [A 335 Grade P22](/materials/astm/a-335-grade-p22 "A 335 Grade P22") | [1.7380](/materials/material-no/1.7380 "1.7380") | Heat-resistant structural steels | 0.08–0.14 | 20 | | [A 335 Grade P5](/materials/astm/a-335-grade-p5 "A 335 Grade P5") | [1.7362](/materials/material-no/1.7362 "1.7362") | Hydrogen resistant steels | 0.1–0.15 | 13 | | [A 335 Grade P91](/materials/astm/a-335-grade-p91 "A 335 Grade P91") | [1.4903](/materials/material-no/1.4903 "1.4903") | High-temperature steels | 0.08–0.12 | 4 | | [A 350 Grade LF2](/materials/astm/a-350-grade-lf2 "A 350 Grade LF2") | [1.0566](/materials/material-no/1.0566 "1.0566") | Fine-grain structural steels | ≤ 0.18 | 11 | | [A 350 Grade LF3](/materials/astm/a-350-grade-lf3 "A 350 Grade LF3") | [1.5637](/materials/material-no/1.5637 "1.5637") | Low-temperature structural steels | ≤ 0.15 | 11 | | [A 355](/materials/astm/a-355 "A 355") | — | — | — | 1 | | [A 403 Grade WP304](/materials/astm/a-403-grade-wp304 "A 403 Grade WP304") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [A 403 Grade WP304L](/materials/astm/a-403-grade-wp304l "A 403 Grade WP304L") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [A 403 Grade WP304L](/materials/astm/a-403-grade-wp304l "A 403 Grade WP304L") | [1.4307](/materials/material-no/1.4307 "1.4307") | Stainless steels | ≤ 0.03 | 14 | | [A 403 Grade WP316](/materials/astm/a-403-grade-wp316 "A 403 Grade WP316") | [1.4401](/materials/material-no/1.4401 "1.4401") | Stainless steels | ≤ 0.07 | 20 | | [A 403 Grade WP316](/materials/astm/a-403-grade-wp316 "A 403 Grade WP316") | [1.4436](/materials/material-no/1.4436 "1.4436") | Stainless steels | ≤ 0.05 | 19 | | [A 403 Grade WP316L](/materials/astm/a-403-grade-wp316l "A 403 Grade WP316L") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [A 403 Grade WP316LN](/materials/astm/a-403-grade-wp316ln "A 403 Grade WP316LN") | [1.4429](/materials/material-no/1.4429 "1.4429") | Stainless steels | ≤ 0.03 | 12 | | [A 403 Grade WP316LN](/materials/astm/a-403-grade-wp316ln "A 403 Grade WP316LN") | [1.4435](/materials/material-no/1.4435 "1.4435") | Stainless steels | ≤ 0.03 | 20 | | [A 403 Grade WP321](/materials/astm/a-403-grade-wp321 "A 403 Grade WP321") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [A 403 Grade WP347](/materials/astm/a-403-grade-wp347 "A 403 Grade WP347") | [1.4550](/materials/material-no/1.4550 "1.4550") | Stainless steels | ≤ 0.08 | 15 | | [A 405 P24](/materials/astm/a-405-p24 "A 405 P24") | [1.7715](/materials/material-no/1.7715 "1.7715") | Heat-resistant structural steels | 0.1–0.18 | 8 | | [A 420 Grade WPL3](/materials/astm/a-420-grade-wpl3 "A 420 Grade WPL3") | [1.5637](/materials/material-no/1.5637 "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. [Previous](/materials/astm/page/2 "Previous") Page 3 of 49[Next](/materials/astm/page/4 "Next")