--- title: "ASTM steel grades — 2441 designations — Page 30" 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/30 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/astm/page/30.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:c21f36566c08082eaee8a0452d34dcb3d350429f0db3ed95bc989f1338bdae6d 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/30 > Canonical URL: https://steelequivalents.com/materials/astm/page/30 > 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 30 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 | |---|---|---|---|---| | [A632](/materials/astm/a632 "A632") | [1.4544](/materials/material-no/1.4544 "1.4544") | Special steels for aviation and aerospace | ≤ 0.08 | 6 | | [A632](/materials/astm/a632 "A632") | [1.4546](/materials/material-no/1.4546 "1.4546") | Special steels for aviation and aerospace | ≤ 0.08 | 5 | | [A632](/materials/astm/a632 "A632") | [1.4550](/materials/material-no/1.4550 "1.4550") | Stainless steels | ≤ 0.08 | 15 | | [A633](/materials/din-en/a633 "A633") | [1.0562](/materials/material-no/1.0562 "1.0562") | Fine-grain structural steels | ≤ 0.18 | 18 | | [A638](/materials/astm/a638 "A638") | [1.2779](/materials/material-no/1.2779 "1.2779") | Tool steels for hot work | ≤ 0.08 | 4 | | [A638](/materials/astm/a638 "A638") | [1.4943](/materials/material-no/1.4943 "1.4943") | Special steels for aviation and aerospace | ≤ 0.06 | 4 | | [A638](/materials/astm/a638 "A638") | [1.4944](/materials/material-no/1.4944 "1.4944") | High-temperature steels / aviation variant | ≤ 0.08 | 4 | | [A638](/materials/astm/a638 "A638") | [1.4954](/materials/material-no/1.4954 "1.4954") | High-temperature steels | ≤ 0.08 | 3 | | [A638](/materials/astm/a638 "A638") | [1.4980](/materials/material-no/1.4980 "1.4980") | High-temperature steels | 0.03–0.08 | 8 | | [A646](/materials/astm/a646 "A646") | [1.2057](/materials/material-no/1.2057 "1.2057") | Tool steels for cold work | 1–1.1 | 4 | | [A646](/materials/astm/a646 "A646") | [1.2067](/materials/material-no/1.2067 "1.2067") | Tool steels for cold work | 0.95–1.1 | 21 | | [A646](/materials/astm/a646 "A646") | [1.3505](/materials/material-no/1.3505 "1.3505") | Bearing steels | 0.93–1.05 | 22 | | [A646](/materials/astm/a646 "A646") | — | — | — | 3 | | [A646](/materials/astm/a646 "A646") | [1.6928](/materials/material-no/1.6928 "1.6928") | Quenched and tempered steels | 0.38–0.45 | 3 | | [A651](/materials/astm/a651 "A651") | [1.4512](/materials/material-no/1.4512 "1.4512") | Stainless steels | ≤ 0.03 | 10 | | [A651](/materials/astm/a651 "A651") | [1.4720](/materials/material-no/1.4720 "1.4720") | Heat resistant steels | ≤ 0.08 | 5 | | [A666](/materials/astm/a666 "A666") | [1.4401](/materials/material-no/1.4401 "1.4401") | Stainless steels | ≤ 0.07 | 20 | | [A666](/materials/astm/a666 "A666") | [1.4372](/materials/material-no/1.4372 "1.4372") | Others | ≤ 0.15 | 10 | | [A666](/materials/astm/a666 "A666") | [1.3965](/materials/material-no/1.3965 "1.3965") | Non-magnetic steels | ≤ 0.1 | 9 | | [A666](/materials/astm/a666 "A666") | [1.4373](/materials/material-no/1.4373 "1.4373") | Non-magnetic steels | ≤ 0.15 | 13 | | [A666](/materials/astm/a666 "A666") | [1.4310](/materials/material-no/1.4310 "1.4310") | Stainless steels | 0.05–0.15 | 18 | | [A666](/materials/astm/a666 "A666") | [1.4319](/materials/material-no/1.4319 "1.4319") | Stainless steels | ≤ 0.07 | 11 | | [A666](/materials/astm/a666 "A666") | [1.4324](/materials/material-no/1.4324 "1.4324") | Special steels for aviation and aerospace | ≤ 0.12 | 7 | | [A666](/materials/astm/a666 "A666") | [1.4300](/materials/material-no/1.4300 "1.4300") | Stainless steels | ≤ 0.12 | 15 | | [A666](/materials/astm/a666 "A666") | [1.4325](/materials/material-no/1.4325 "1.4325") | Stainless steels | 0.03–0.15 | 11 | | [A666](/materials/astm/a666 "A666") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [A666](/materials/astm/a666 "A666") | [1.4314](/materials/material-no/1.4314 "1.4314") | Special steels for aviation and aerospace | ≤ 0.07 | 4 | | [A666](/materials/astm/a666 "A666") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [A666](/materials/astm/a666 "A666") | [1.4307](/materials/material-no/1.4307 "1.4307") | Stainless steels | ≤ 0.03 | 14 | | [A666](/materials/astm/a666 "A666") | [1.4315](/materials/material-no/1.4315 "1.4315") | Stainless steels | ≤ 0.06 | 5 | | [A666](/materials/astm/a666 "A666") | [1.6907](/materials/material-no/1.6907 "1.6907") | Low-temperature steels | ≤ 0.04 | 5 | | [A666](/materials/astm/a666 "A666") | [1.4311](/materials/material-no/1.4311 "1.4311") | Stainless steels | ≤ 0.03 | 13 | | [A666](/materials/astm/a666 "A666") | [1.4436](/materials/material-no/1.4436 "1.4436") | Stainless steels | ≤ 0.05 | 19 | | [A666](/materials/astm/a666 "A666") | [1.4984](/materials/material-no/1.4984 "1.4984") | High-temperature steels / aviation variant | 0.04–0.1 | 4 | | [A666](/materials/astm/a666 "A666") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [A666](/materials/astm/a666 "A666") | [1.4432](/materials/material-no/1.4432 "1.4432") | Others | ≤ 0.03 | 11 | | [A666](/materials/astm/a666 "A666") | [1.4435](/materials/material-no/1.4435 "1.4435") | Stainless steels | ≤ 0.03 | 20 | | [A666](/materials/astm/a666 "A666") | [1.4495](/materials/material-no/1.4495 "1.4495") | Others | ≤ 0.08 | 5 | | [A666](/materials/astm/a666 "A666") | [1.4828](/materials/material-no/1.4828 "1.4828") | Heat resistant steels | ≤ 0.2 | 20 | | [A678 Grade C](/materials/astm/a678-grade-c "A678 Grade C") This grade’s own name | [1.0060](/materials/material-no/1.0060 "1.0060") | Unalloyed structural steels | — | 21 | | [A678 Grade C](/materials/astm/a678-grade-c "A678 Grade C") This grade’s own name | [1.0070](/materials/material-no/1.0070 "1.0070") | Unalloyed structural steels | — | 16 | | [A688](/materials/astm/a688 "A688") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [A688](/materials/astm/a688 "A688") | [1.4314](/materials/material-no/1.4314 "1.4314") | Special steels for aviation and aerospace | ≤ 0.07 | 4 | | [A688](/materials/astm/a688 "A688") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [A688](/materials/astm/a688 "A688") | [1.4307](/materials/material-no/1.4307 "1.4307") | Stainless steels | ≤ 0.03 | 14 | | [A688](/materials/astm/a688 "A688") | [1.4315](/materials/material-no/1.4315 "1.4315") | Stainless steels | ≤ 0.06 | 5 | | [A688](/materials/astm/a688 "A688") | [1.6907](/materials/material-no/1.6907 "1.6907") | Low-temperature steels | ≤ 0.04 | 5 | | [A688](/materials/astm/a688 "A688") | [1.4311](/materials/material-no/1.4311 "1.4311") | Stainless steels | ≤ 0.03 | 13 | | [A688](/materials/astm/a688 "A688") | [1.4401](/materials/material-no/1.4401 "1.4401") | Stainless steels | ≤ 0.07 | 20 | | [A688](/materials/astm/a688 "A688") | [1.4436](/materials/material-no/1.4436 "1.4436") | Stainless steels | ≤ 0.05 | 19 | **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/29 "Previous") Page 30 of 49[Next](/materials/astm/page/31 "Next")