--- title: "ASTM steel grades — 2441 designations — Page 27" 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/27 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/astm/page/27.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:c8d8108d4b59a0d353a90dbee96f4194da98d83ecaf23914229dd108a48e25e6 generated: 2026-09-26 --- > **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/27 > Canonical URL: https://steelequivalents.com/materials/astm/page/27 > 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 27 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. 2 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 | |---|---|---|---|---| | [A554](/materials/astm/a554 "A554") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [A554](/materials/astm/a554 "A554") | [1.4314](/materials/material-no/1.4314 "1.4314") | Special steels for aviation and aerospace | ≤ 0.07 | 4 | | [A554](/materials/astm/a554 "A554") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [A554](/materials/astm/a554 "A554") | [1.4307](/materials/material-no/1.4307 "1.4307") | Stainless steels | ≤ 0.03 | 14 | | [A554](/materials/astm/a554 "A554") | [1.4303](/materials/material-no/1.4303 "1.4303") | Stainless steels | ≤ 0.06 | 14 | | [A554](/materials/astm/a554 "A554") | [1.4884](/materials/material-no/1.4884 "1.4884") | Others | ≤ 0.08 | 5 | | [A554](/materials/astm/a554 "A554") | [1.4833](/materials/material-no/1.4833 "1.4833") | Heat resistant steels | ≤ 0.15 | 15 | | [A554](/materials/astm/a554 "A554") | [1.4950](/materials/material-no/1.4950 "1.4950") | Heat resistant steels | 0.04–0.08 | 7 | | [A554](/materials/astm/a554 "A554") | [1.4335](/materials/material-no/1.4335 "1.4335") | Stainless steels | ≤ 0.02 | 9 | | [A554](/materials/astm/a554 "A554") | [1.4845](/materials/material-no/1.4845 "1.4845") | Heat resistant steels | ≤ 0.1 | 21 | | [A554](/materials/astm/a554 "A554") | [1.4951](/materials/material-no/1.4951 "1.4951") | Heat resistant steels | 0.04–0.08 | 8 | | [A554](/materials/astm/a554 "A554") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [A554](/materials/astm/a554 "A554") | [1.4432](/materials/material-no/1.4432 "1.4432") | Others | ≤ 0.03 | 11 | | [A554](/materials/astm/a554 "A554") | [1.4435](/materials/material-no/1.4435 "1.4435") | Stainless steels | ≤ 0.03 | 20 | | [A554](/materials/astm/a554 "A554") | [1.4445](/materials/material-no/1.4445 "1.4445") | Others | ≤ 0.08 | 6 | | [A554](/materials/astm/a554 "A554") | [1.4449](/materials/material-no/1.4449 "1.4449") | Stainless steels | ≤ 0.035 | 7 | | [A554](/materials/astm/a554 "A554") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [A554](/materials/astm/a554 "A554") | [1.4544](/materials/material-no/1.4544 "1.4544") | Special steels for aviation and aerospace | ≤ 0.08 | 6 | | [A554](/materials/astm/a554 "A554") | [1.4546](/materials/material-no/1.4546 "1.4546") | Special steels for aviation and aerospace | ≤ 0.08 | 5 | | [A554](/materials/astm/a554 "A554") | [1.4550](/materials/material-no/1.4550 "1.4550") | Stainless steels | ≤ 0.08 | 15 | | [A554](/materials/astm/a554 "A554") | [1.4001](/materials/material-no/1.4001 "1.4001") | Stainless steels | ≤ 0.08 | 10 | | [A554](/materials/astm/a554 "A554") | [1.4012](/materials/material-no/1.4012 "1.4012") | Stainless steels | ≤ 0.12 | 4 | | [A554](/materials/astm/a554 "A554") | [1.4011](/materials/material-no/1.4011 "1.4011") | Others | ≤ 0.15 | 7 | | [A554](/materials/astm/a554 "A554") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [A56](/materials/astm/a56 "A56") | [1.4542](/materials/material-no/1.4542 "1.4542") | Stainless steels | ≤ 0.07 | 7 | | [A564](/materials/astm/a564 "A564") | [1.4540](/materials/material-no/1.4540 "1.4540") | Others | ≤ 0.06 | 6 | | [A564](/materials/astm/a564 "A564") | [1.4545](/materials/material-no/1.4545 "1.4545") | Special steels for aviation and aerospace | ≤ 0.07 | 4 | | [A564](/materials/astm/a564 "A564") | — | — | — | 2 | | [A564](/materials/astm/a564 "A564") | — | — | — | 2 | | [A564](/materials/astm/a564 "A564") | [1.4548](/materials/material-no/1.4548 "1.4548") | Special steels for aviation and aerospace | ≤ 0.07 | 4 | | [A564 Grade 630](/materials/astm/a564-grade-630 "A564 Grade 630") | [1.4542](/materials/material-no/1.4542 "1.4542") | Stainless steels | ≤ 0.07 | 7 | | [A564 Type 630](/materials/astm/a564-type-630 "A564 Type 630") | [1.4542](/materials/material-no/1.4542 "1.4542") | Stainless steels | ≤ 0.07 | 7 | | [A564 Type 630](/materials/astm/a564-type-630 "A564 Type 630") | [1.4548](/materials/material-no/1.4548 "1.4548") | Special steels for aviation and aerospace | ≤ 0.07 | 4 | | [A564 Type 634](/materials/astm/a564-type-634 "A564 Type 634") | — | — | — | 2 | | [A564 Type XM-12](/materials/astm/a564-type-xm-12 "A564 Type XM-12") | [1.4540](/materials/material-no/1.4540 "1.4540") | Others | ≤ 0.06 | 6 | | [A564 Type XM-12](/materials/astm/a564-type-xm-12 "A564 Type XM-12") | [1.4545](/materials/material-no/1.4545 "1.4545") | Special steels for aviation and aerospace | ≤ 0.07 | 4 | | [A564 Type XM-13](/materials/astm/a564-type-xm-13 "A564 Type XM-13") | [1.4534](/materials/material-no/1.4534 "1.4534") | Special steels for aviation and aerospace | ≤ 0.05 | 4 | | [A570](/materials/aisi-sae/a570 "A570") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [A570](/materials/aisi-sae/a570 "A570") | [1.0044](/materials/material-no/1.0044 "1.0044") | Unalloyed structural steels | ≤ 0.21 | 26 | | [A570](/materials/aisi-sae/a570 "A570") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [A570](/materials/aisi-sae/a570 "A570") | [1.0050](/materials/material-no/1.0050 "1.0050") | Unalloyed structural steels | — | 23 | | [A572](/materials/astm/a572 "A572") This grade’s own name | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [A572](/materials/astm/a572 "A572") | — | — | — | 1 | | [A572](/materials/astm/a572 "A572") | — | — | — | 1 | | [A572 Grade 55](/materials/astm/a572-grade-55 "A572 Grade 55") This grade’s own name | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [A572 grado 50](/materials/astm/a572-grado-50 "A572 grado 50") | — | — | — | 1 | | [A573](/materials/aisi-sae/a573 "A573") | [1.0116](/materials/material-no/1.0116 "1.0116") | Unalloyed structural steels | ≤ 0.17 | 12 | | [A579](/materials/astm/a579 "A579") | — | — | — | 2 | | [A579](/materials/astm/a579 "A579") | [1.6358](/materials/material-no/1.6358 "1.6358") | Special steels for aviation and aerospace | ≤ 0.03 | 3 | | [A579](/materials/astm/a579 "A579") | [1.6928](/materials/material-no/1.6928 "1.6928") | Quenched and tempered steels | 0.38–0.45 | 3 | **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/26 "Previous") Page 27 of 49[Next](/materials/astm/page/28 "Next")