--- title: "K01800 — 7 equivalent grades, compared" description: "The designation K01800 is carried by 7 different grades. Compare them on the elements that actually differ, then open the one your print means." canonical: https://steelequivalents.com/materials/uns/k01800 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/uns/k01800.md cs: https://steelequivalents.com/cs/materiály/uns/k01800.md de: https://steelequivalents.com/de/werkstoffe/uns/k01800.md es: https://steelequivalents.com/es/materiales/uns/k01800.md fr: https://steelequivalents.com/fr/matériaux/uns/k01800.md hu: https://steelequivalents.com/hu/anyagok/uns/k01800.md it: https://steelequivalents.com/it/materiali/uns/k01800.md nl: https://steelequivalents.com/nl/materialen/uns/k01800.md pl: https://steelequivalents.com/pl/materiały/uns/k01800.md pt: https://steelequivalents.com/pt/materiais/uns/k01800.md ru: https://steelequivalents.com/ru/материалы/uns/k01800.md tr: https://steelequivalents.com/tr/malzemeler/uns/k01800.md zh: https://steelequivalents.com/zh/材料/uns/k01800.md ja: https://steelequivalents.com/ja/材料/uns/k01800.md ar: https://steelequivalents.com/ar/المواد/uns/k01800.md ko: https://steelequivalents.com/ko/재료/uns/k01800.md pt-br: https://steelequivalents.com/pt-br/materiais/uns/k01800.md hi: https://steelequivalents.com/hi/सामग्री/uns/k01800.md content_hash: sha256:00756cad00237820f30a70399a6cf1134041f7efc7d0621c1803f845d10d6190 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/uns/k01800 > Canonical URL: https://steelequivalents.com/materials/uns/k01800 > 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. UNS · United States · 7 grades # K01800 The designation K01800 is carried by 7 different grades. Compare them on the elements that actually differ, then open the one your print means. - *Matching grades* **7** - [*Category* **Unalloyed structural steels · 452 grades**](/categories/unalloyed-structural-steels "Category: Unalloyed structural steels · 452 grades") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - [*Category* **Fine-grain structural steels · 50 grades**](/categories/fine-grain-structural-steels "Category: Fine-grain structural steels · 50 grades") [Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry") ## Which of the 7 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 | P% | C% | S% | Mn% | Si% | Al% | |---|---|---|---|---|---|---|---|---|---| | [P235G2TH](/materials/din-en/p235g2th "P235G2TH") | [1.0315](/materials/material-no/1.0315 "1.0315") 1.0 | [Unalloyed structural steels](/categories/unalloyed-structural-steels "Unalloyed structural steels") | 7 | 0,04 | ≤0,17 | 0,04 | 0,40-0,80 | 0,10-0,35 | — | | [H 220 G 1](/materials/din-en/h-220-g-1 "H 220 G 1") | [1.0346](/materials/material-no/1.0346 "1.0346") 1.0 | [Unalloyed structural steels](/categories/unalloyed-structural-steels "Unalloyed structural steels") | 7 | 0,05 | ≤0,07 | 0,025 | ≤0,60 | ≤0,50 | ≥0,015 | | [1.0356](/materials/material-no/1.0356 "1.0356") | [1.0356](/materials/material-no/1.0356 "1.0356") 1.0 | [Others](/categories/others "Others") | 8 | — | — | — | — | — | — | | [S255N](/materials/din-en/s255n "S255N") | [1.0461](/materials/material-no/1.0461 "1.0461") 1.0 | [Fine-grain structural steels](/categories/fine-grain-structural-steels "Fine-grain structural steels") | 18 | 0,035 | ≤0,18 | 0,03 | 0,50-1,30 | ≤0,40 | ≥0,020 | | [P255NH](/materials/din-en/p255nh "P255NH") | [1.0462](/materials/material-no/1.0462 "1.0462") 1.0 | [Fine-grain structural steels](/categories/fine-grain-structural-steels "Fine-grain structural steels") | 4 | 0,035 | ≤0,18 | 0,03 | 0,50-1,30 | ≤0,40 | ≥0,020 | | [P255NL](/materials/din-en/p255nl "P255NL") | [1.0463](/materials/material-no/1.0463 "1.0463") 1.0 | [Fine-grain structural steels](/categories/fine-grain-structural-steels "Fine-grain structural steels") | 6 | 0,03 | ≤0,16 | 0,025 | 0,50-1,30 | ≤0,40 | ≥0,020 | | [A662Gr.A](/materials/din-en/a662gr-a "A662Gr.A") | [1.0488](/materials/material-no/1.0488 "1.0488") 1.0 | [Fine-grain structural steels](/categories/fine-grain-structural-steels "Fine-grain structural steels") | 18 | 0,025 | ≤0,16 | 0,015 | 0,60-1,50 | ≤0,40 | ≥0,020 | ## 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")