--- title: "ABNT NBR steel grades — 72 designations" description: "Steel grades designated under ABNT NBR, with chemical composition, mechanical properties and equivalents in other standards. 72 designations…" canonical: https://steelequivalents.com/materials/abnt language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/abnt.md cs: https://steelequivalents.com/cs/materiály/abnt.md de: https://steelequivalents.com/de/werkstoffe/abnt.md es: https://steelequivalents.com/es/materiales/abnt.md fr: https://steelequivalents.com/fr/matériaux/abnt.md hu: https://steelequivalents.com/hu/anyagok/abnt.md it: https://steelequivalents.com/it/materiali/abnt.md nl: https://steelequivalents.com/nl/materialen/abnt.md pl: https://steelequivalents.com/pl/materiały/abnt.md pt: https://steelequivalents.com/pt/materiais/abnt.md ru: https://steelequivalents.com/ru/материалы/abnt.md tr: https://steelequivalents.com/tr/malzemeler/abnt.md zh: https://steelequivalents.com/zh/材料/abnt.md ja: https://steelequivalents.com/ja/材料/abnt.md ar: https://steelequivalents.com/ar/المواد/abnt.md ko: https://steelequivalents.com/ko/재료/abnt.md pt-br: https://steelequivalents.com/pt-br/materiais/abnt.md hi: https://steelequivalents.com/hi/सामग्री/abnt.md content_hash: sha256:1edd4e570d9a59223caa091013970e92979e56d891dc5e3a2b94dbc8783c6472 generated: 2026-09-22 --- > **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/abnt > Canonical URL: https://steelequivalents.com/materials/abnt > 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. ABNT NBR · 72 grades # ABNT NBR steel grades — 72 designations Every grade designated under ABNT NBR, 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. Every name on this page is an indicative cross-reference, not an asserted identity: the grades are close, not interchangeable. Check the composition before you substitute. ## Also known as 72 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [1020](/materials/aisi-sae/1020 "1020") | [1.1151](/materials/material-no/1.1151 "1.1151") | Quenched and tempered steels | 0.17–0.24 | 15 | | [1035](/materials/aisi-sae/1035 "1035") | [1.1181](/materials/material-no/1.1181 "1.1181") | Quenched and tempered steels | 0.32–0.39 | 20 | | [1045](/materials/aisi-sae/1045 "1045") | [1.1191](/materials/material-no/1.1191 "1.1191") | Quenched and tempered steels | 0.42–0.5 | 21 | | [1050](/materials/aisi-sae/1050 "1050") | [1.1206](/materials/material-no/1.1206 "1.1206") | Quenched and tempered steels | 0.47–0.55 | 17 | | [1055](/materials/aisi-sae/1055 "1055") | [1.1203](/materials/material-no/1.1203 "1.1203") | Quenched and tempered steels | 0.52–0.6 | 15 | | [1060](/materials/aisi-sae/1060 "1060") | [1.1221](/materials/material-no/1.1221 "1.1221") | Quenched and tempered steels | 0.57–0.65 | 18 | | [1070](/materials/aisi-sae/1070 "1070") | [1.1231](/materials/material-no/1.1231 "1.1231") | Spring steels | 0.65–0.73 | 18 | | [1074](/materials/aisi-sae/1074 "1074") | [1.1248](/materials/material-no/1.1248 "1.1248") | Spring steels | 0.7–0.8 | 11 | | [1080](/materials/aisi-sae/1080 "1080") | [1.0616](/materials/material-no/1.0616 "1.0616") | Spring steels | 0.83–0.88 | 8 | | [1080](/materials/aisi-sae/1080 "1080") | [1.1265](/materials/material-no/1.1265 "1.1265") | Spring steels | 0.84–0.88 | 5 | | [1080](/materials/aisi-sae/1080 "1080") | [1.9615](/materials/material-no/1.9615 "1.9615") | Spring steels | 0.75–0.88 | 5 | | [1095](/materials/aisi-sae/1095 "1095") | [1.0618](/materials/material-no/1.0618 "1.0618") | Others | 0.9–0.95 | 5 | | [1095](/materials/aisi-sae/1095 "1095") | [1.1274](/materials/material-no/1.1274 "1.1274") | Spring steels | 0.95–1.05 | 13 | | [1095](/materials/aisi-sae/1095 "1095") | [1.1283](/materials/material-no/1.1283 "1.1283") | Others | 0.96–1 | 5 | | [1095](/materials/aisi-sae/1095 "1095") | [1.9618](/materials/material-no/1.9618 "1.9618") | Others | 0.9–1.03 | 5 | | [301](/materials/aisi-sae/301 "301") | [1.4310](/materials/material-no/1.4310 "1.4310") | Stainless steels | 0.05–0.15 | 18 | | [301](/materials/aisi-sae/301 "301") | [1.4319](/materials/material-no/1.4319 "1.4319") | Stainless steels | ≤ 0.07 | 11 | | [301](/materials/aisi-sae/301 "301") | [1.4324](/materials/material-no/1.4324 "1.4324") | Special steels for aviation and aerospace | ≤ 0.12 | 7 | | [302](/materials/aisi-sae/302 "302") | [1.4300](/materials/material-no/1.4300 "1.4300") | Stainless steels | ≤ 0.12 | 15 | | [302](/materials/aisi-sae/302 "302") | [1.4310](/materials/material-no/1.4310 "1.4310") | Stainless steels | 0.05–0.15 | 18 | | [302](/materials/aisi-sae/302 "302") | [1.4324](/materials/material-no/1.4324 "1.4324") | Special steels for aviation and aerospace | ≤ 0.12 | 7 | | [302](/materials/aisi-sae/302 "302") | [1.4325](/materials/material-no/1.4325 "1.4325") | Stainless steels | 0.03–0.15 | 11 | | [304](/materials/aisi-sae/304 "304") | [1.4301](/materials/material-no/1.4301 "1.4301") | Stainless steels | ≤ 0.07 | 23 | | [304](/materials/aisi-sae/304 "304") | [1.4314](/materials/material-no/1.4314 "1.4314") | Special steels for aviation and aerospace | ≤ 0.07 | 4 | | [304 L](/materials/aisi-sae/304l "304 L") | [1.4306](/materials/material-no/1.4306 "1.4306") | Stainless steels | ≤ 0.03 | 18 | | [304 L](/materials/aisi-sae/304l "304 L") | [1.4307](/materials/material-no/1.4307 "1.4307") | Stainless steels | ≤ 0.03 | 14 | | [304 L](/materials/aisi-sae/304l "304 L") | [1.4309](/materials/material-no/1.4309 "1.4309") | Cast stainless steels | ≤ 0.03 | 7 | | [316](/materials/aisi-sae/316 "316") | [1.4401](/materials/material-no/1.4401 "1.4401") | Stainless steels | ≤ 0.07 | 20 | | [316](/materials/aisi-sae/316 "316") | [1.4436](/materials/material-no/1.4436 "1.4436") | Stainless steels | ≤ 0.05 | 19 | | [316](/materials/aisi-sae/316 "316") | [1.4984](/materials/material-no/1.4984 "1.4984") | High-temperature steels / aviation variant | 0.04–0.1 | 4 | | [316 L](/materials/aisi-sae/316l "316 L") | [1.4404](/materials/material-no/1.4404 "1.4404") | Stainless steels | ≤ 0.03 | 25 | | [316 L](/materials/aisi-sae/316l "316 L") | [1.4432](/materials/material-no/1.4432 "1.4432") | Others | ≤ 0.03 | 11 | | [316 L](/materials/aisi-sae/316l "316 L") | [1.4435](/materials/material-no/1.4435 "1.4435") | Stainless steels | ≤ 0.03 | 20 | | [321](/materials/aisi-sae/321 "321") | [1.4541](/materials/material-no/1.4541 "1.4541") | Stainless steels | ≤ 0.08 | 25 | | [321](/materials/aisi-sae/321 "321") | [1.4544](/materials/material-no/1.4544 "1.4544") | Special steels for aviation and aerospace | ≤ 0.08 | 6 | | [409](/materials/aisi-sae/409 "409") | [1.4512](/materials/material-no/1.4512 "1.4512") | Stainless steels | ≤ 0.03 | 10 | | [409](/materials/aisi-sae/409 "409") | [1.4720](/materials/material-no/1.4720 "1.4720") | Heat resistant steels | ≤ 0.08 | 5 | | [410](/materials/aisi-sae/410 "410") | [1.4006](/materials/material-no/1.4006 "1.4006") | Stainless steels | 0.08–0.15 | 26 | | [410](/materials/aisi-sae/410 "410") | [1.4024](/materials/material-no/1.4024 "1.4024") | Stainless steels | 0.12–0.17 | 13 | | [420](/materials/is/420 "420") | [1.2083](/materials/material-no/1.2083 "1.2083") | Tool steels for cold work | 0.36–0.42 | 16 | | [420](/materials/is/420 "420") | [1.4021](/materials/material-no/1.4021 "1.4021") | Stainless steels | 0.16–0.25 | 18 | | [420](/materials/is/420 "420") | [1.4028](/materials/material-no/1.4028 "1.4028") | Stainless steels | 0.26–0.35 | 18 | | [420](/materials/is/420 "420") | [1.4031](/materials/material-no/1.4031 "1.4031") | Stainless steels | 0.36–0.42 | 18 | | [420](/materials/is/420 "420") | [1.4034](/materials/material-no/1.4034 "1.4034") | Stainless steels | 0.43–0.5 | 18 | | [420](/materials/is/420 "420") | [1.4038](/materials/material-no/1.4038 "1.4038") | Stainless steels | 0.48–0.55 | 5 | | [430](/materials/aisi-sae/430 "430") | [1.4011](/materials/material-no/1.4011 "1.4011") | Others | ≤ 0.15 | 7 | | [430](/materials/aisi-sae/430 "430") | [1.4016](/materials/material-no/1.4016 "1.4016") | Stainless steels | ≤ 0.08 | 18 | | [6151](/materials/abnt/6151 "6151") | [1.8159](/materials/material-no/1.8159 "1.8159") | Quenched and tempered steels | 0.47–0.55 | 27 | | [NBR 5000 Grau 35](/materials/abnt/nbr-5000-grau-35 "NBR 5000 Grau 35") | [1.0045](/materials/material-no/1.0045 "1.0045") | Unalloyed structural steels | ≤ 0.24 | 17 | | [NBR 5004 Grau Q35](/materials/abnt/nbr-5004-grau-q35 "NBR 5004 Grau Q35") | [1.0045](/materials/material-no/1.0045 "1.0045") | Unalloyed structural steels | ≤ 0.24 | 17 | **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. Page 1 of 2[Next](/materials/abnt/page/2 "Next")