--- title: "A830 — 6 equivalent grades, compared" description: "The designation A830 is carried by 6 different grades. Compare them on the elements that actually differ, then open the one your print means." canonical: https://steelequivalents.com/materials/astm/a830 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/astm/a830.md cs: https://steelequivalents.com/cs/materiály/astm/a830.md de: https://steelequivalents.com/de/werkstoffe/astm/a830.md es: https://steelequivalents.com/es/materiales/astm/a830.md fr: https://steelequivalents.com/fr/matériaux/astm/a830.md hu: https://steelequivalents.com/hu/anyagok/astm/a830.md it: https://steelequivalents.com/it/materiali/astm/a830.md nl: https://steelequivalents.com/nl/materialen/astm/a830.md pl: https://steelequivalents.com/pl/materiały/astm/a830.md pt: https://steelequivalents.com/pt/materiais/astm/a830.md ru: https://steelequivalents.com/ru/материалы/astm/a830.md tr: https://steelequivalents.com/tr/malzemeler/astm/a830.md zh: https://steelequivalents.com/zh/材料/astm/a830.md ja: https://steelequivalents.com/ja/材料/astm/a830.md ar: https://steelequivalents.com/ar/المواد/astm/a830.md ko: https://steelequivalents.com/ko/재료/astm/a830.md pt-br: https://steelequivalents.com/pt-br/materiais/astm/a830.md hi: https://steelequivalents.com/hi/सामग्री/astm/a830.md content_hash: sha256:2cdb381479aaa2ec361efe551c4d5bdca6682022a385b7b763224f49c9ba3fee 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/astm/a830 > Canonical URL: https://steelequivalents.com/materials/astm/a830 > 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 · United States · 6 grades # A830 The designation A830 is carried by 6 different grades. Compare them on the elements that actually differ, then open the one your print means. - *Matching grades* **6** - [*Category* **Quenched and tempered steels · 133 grades**](/categories/quenched-and-tempered-steels "Category: Quenched and tempered steels · 133 grades") - [*Category* **Steels for surface hardening · 13 grades**](/categories/steels-for-surface-hardening "Category: Steels for surface hardening · 13 grades") - [*Category* **Unalloyed tool steels / carbon steels · 35 grades**](/categories/unalloyed-tool-steels-carbon-steels "Category: Unalloyed tool steels / carbon steels · 35 grades") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") [Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry") ## Which of the 6 do you want? This name is carried by several grades. The elements shown are the ones whose values actually differ across the set — the ones that decide the question. Values are the source text verbatim; an em dash means no value on file for that element on that grade, not zero. | Grade | Material no. | Category | Designations | S% | C% | Si% | P% | Mn% | |---|---|---|---|---|---|---|---|---| | [1.0503](/materials/material-no/1.0503 "1.0503") | [1.0503](/materials/material-no/1.0503 "1.0503") 1.0 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 93 | 0,045 | 0,42-0,50 | ≤0,40 | 0,045 | 0,50-0,80 | | [1.1191](/materials/material-no/1.1191 "1.1191") | [1.1191](/materials/material-no/1.1191 "1.1191") 1.1 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 39 | 0,035 | 0,42-0,50 | ≤0,40 | 0,03 | 0,50-0,80 | | [C45G](/materials/din-en/c45g "C45G") | [1.1193](/materials/material-no/1.1193 "1.1193") 1.1 | [Steels for surface hardening](/categories/steels-for-surface-hardening "Steels for surface hardening") | 5 | 0,035 | 0,43-0,49 | 0,15-0,35 | 0,025 | 0,50-0,80 | | [C45R](/materials/din-en/c45r "C45R") | [1.1201](/materials/material-no/1.1201 "1.1201") 1.1 | [Quenched and tempered steels](/categories/quenched-and-tempered-steels "Quenched and tempered steels") | 22 | 0,020-0,040 | 0,42-0,50 | ≤0,40 | 0,03 | 0,50-0,80 | | [C45U](/materials/din-en/c45u "C45U") | [1.1730](/materials/material-no/1.1730 "1.1730") 1.1 | [Unalloyed tool steels / carbon steels](/categories/unalloyed-tool-steels-carbon-steels "Unalloyed tool steels / carbon steels") | 19 | 0,03 | 0,42-0,50 | 0,15-0,40 | 0,03 | 0,60-0,80 | | [SAE 1045](/materials/din-en/sae-1045 "SAE 1045") | [1.9504](/materials/material-no/1.9504 "1.9504") 1.9 | [Others](/categories/others "Others") | 4 | 0,05 | 0,43-0,50 | — | 0,03 | 0,60-0,90 | ## Not sure which one your print means? Search the catalogue by designation, material number or composition — every name on this page is itself a way in. [Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry")