--- title: "鋳鋼 — 化学成分つき 59 鋼種" description: "鋳鋼は、鋼を鋳型に注湯して部品を成形する鉄系材料である。鋳造による形状形成の自由度と、鋼に特有の強度および靭性を兼ね備え、機械部品…" canonical: https://steelequivalents.com/ja/%E3%82%AB%E3%83%86%E3%82%B4%E3%83%AA%E3%83%BC/%E9%8B%B3%E9%8B%BC language: ja robots: index, follow og_type: website type: category-detail language_alternates: en: https://steelequivalents.com/categories/cast-steel.md cs: https://steelequivalents.com/cs/kategorie/ocel-na-odlitky.md de: https://steelequivalents.com/de/kategorien/stahlguss.md es: https://steelequivalents.com/es/categorías/acero-moldeado.md fr: https://steelequivalents.com/fr/catégories/acier-moulé.md hu: https://steelequivalents.com/hu/kategóriák/acélöntvény.md it: https://steelequivalents.com/it/categorie/acciaio-fuso.md nl: https://steelequivalents.com/nl/categorieën/gietstaal.md pl: https://steelequivalents.com/pl/kategorie/staliwo.md pt: https://steelequivalents.com/pt/categorias/aço-fundido.md ru: https://steelequivalents.com/ru/категории/стальное-литьё.md tr: https://steelequivalents.com/tr/kategoriler/çelik-döküm.md zh: https://steelequivalents.com/zh/类别/铸钢.md ja: https://steelequivalents.com/ja/%E3%82%AB%E3%83%86%E3%82%B4%E3%83%AA%E3%83%BC/%E9%8B%B3%E9%8B%BC.md ar: https://steelequivalents.com/ar/الفئات/الصلب-المصبوب.md ko: https://steelequivalents.com/ko/분류/주강.md pt-br: https://steelequivalents.com/pt-br/categorias/aço-fundido.md hi: https://steelequivalents.com/hi/श्रेणियाँ/ढलवाँ-इस्पात.md content_hash: sha256:2fa881395cff09ebb0d426cf1a48b801f45472ac1f8ecb2e76bf620e6c641243 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/ja/%E3%82%AB%E3%83%86%E3%82%B4%E3%83%AA%E3%83%BC/%E9%8B%B3%E9%8B%BC > Canonical URL: https://steelequivalents.com/ja/%E3%82%AB%E3%83%86%E3%82%B4%E3%83%AA%E3%83%BC/%E9%8B%B3%E9%8B%BC > 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. ![鋳鋼](/images/uploads/142bd150-2d5d-492c-823f-7673da18bb23/cast-steel-category-sand-cast-surface-1920x1080.jpg) カテゴリー · 59 鋼種 # 鋳鋼 鋳鋼は、鋼を鋳型に注湯して部品を成形する鉄系材料である。鋳造による形状形成の自由度と、鋼に特有の強度および靭性を兼ね備え、機械部品、構造用鋳物および産業機器などの複雑で高荷重を受ける部品に適している。 | 鋼種 | 材料番号 | C | P | S | Mn | Si | Cr | |---|---|---|---|---|---|---|---| | [SCPH2](/ja/材料/jis/scph2 "SCPH2") | — | max 0.3 | max 0.04 | max 0.04 | max 1 | max 0.6 | max 0.25 | | [SCMnCr3](/ja/材料/jis/scmncr3 "SCMnCr3") | — | 0.3 - 0.4 | max 0.04 | max 0.04 | 1.2 - 1.6 | 0.3 - 0.6 | 0.4 - 0.8 | | [SCPH23](/ja/材料/jis/scph23 "SCPH23") | — | max 0.2 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.6 | 1 - 1.5 | | [SCMnM3](/ja/材料/jis/scmnm3 "SCMnM3") | — | 0.3 - 0.4 | max 0.04 | max 0.04 | 1.2 - 1.6 | 0.3 - 0.6 | max 0.2 | | [SCPH1-CF](/ja/材料/jis/scph1-cf "SCPH1-CF") | — | max 0.22 | max 0.04 | max 0.04 | max 1.1 | max 0.6 | max 0.25 | | [SCMnH1](/ja/材料/jis/scmnh1 "SCMnH1") | — | 0.9 - 1.3 | max 0.1 | max 0.05 | 11 - 14 | — | — | | [SCPH32-CF](/ja/材料/jis/scph32-cf "SCPH32-CF") | — | max 0.15 | max 0.03 | max 0.03 | 0.3 - 0.6 | max 0.6 | 1.9 - 2.6 | | [SCMnH3](/ja/材料/jis/scmnh3 "SCMnH3") | — | 0.9 - 1.2 | max 0.05 | max 0.035 | 11 - 14 | 0.3 - 0.8 | — | | [SCMnH12](/ja/材料/jis/scmnh12 "SCMnH12") | — | 1.05 - 1.35 | max 0.06 | max 0.045 | 16 - 19 | 0.3 - 0.9 | 1.5 - 2.5 | | [SCMnH33](/ja/材料/jis/scmnh33 "SCMnH33") | — | 0.7 - 1 | max 0.07 | max 0.045 | 13 - 15 | 0.3 - 0.6 | — | | [SCPL31](/ja/材料/jis/scpl31 "SCPL31") | — | max 0.15 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.6 | max 0.35 | | [SCW550](/ja/材料/jis/scw550 "SCW550") | — | max 0.22 | max 0.04 | max 0.04 | max 1.5 | max 0.8 | max 0.5 | | [SC450](/ja/材料/jis/sc450 "SC450") | — | max 0.35 | max 0.04 | max 0.04 | — | — | — | | [SCW490-CF](/ja/材料/jis/scw490-cf "SCW490-CF") | — | max 0.2 | max 0.04 | max 0.04 | max 1.5 | max 0.8 | — | | [SCMn2](/ja/材料/jis/scmn2 "SCMn2") | — | 0.25 - 0.35 | max 0.04 | max 0.04 | 1 - 1.6 | 0.3 - 0.6 | — | | [SCMnCr2](/ja/材料/jis/scmncr2 "SCMnCr2") | — | 0.25 - 0.35 | max 0.04 | max 0.04 | 1.2 - 1.6 | 0.3 - 0.6 | 0.4 - 0.8 | | [SCPH22](/ja/材料/jis/scph22 "SCPH22") | — | max 0.25 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.6 | 1 - 1.5 | | [SCCrM1](/ja/材料/jis/sccrm1 "SCCrM1") | — | 0.2 - 0.3 | max 0.04 | max 0.04 | 0.5 - 0.8 | 0.3 - 0.6 | 0.8 - 1.2 | | [SCPL1](/ja/材料/jis/scpl1 "SCPL1") | — | max 0.3 | max 0.04 | max 0.04 | max 1 | max 0.6 | max 0.25 | | [SCNCrM2](/ja/材料/jis/scncrm2 "SCNCrM2") | — | 0.25 - 0.35 | max 0.04 | max 0.04 | 0.9 - 1.5 | 0.3 - 0.6 | 0.3 - 0.9 | | [SCPH21-CF](/ja/材料/jis/scph21-cf "SCPH21-CF") | — | max 0.15 | max 0.03 | max 0.03 | 0.3 - 0.6 | max 0.6 | 1 - 1.5 | | [SCMnH2X2](/ja/材料/jis/scmnh2x2 "SCMnH2X2") | — | 1.05 - 1.35 | max 0.06 | max 0.045 | 11 - 14 | 0.3 - 0.9 | — | | [SCMnH11X](/ja/材料/jis/scmnh11x "SCMnH11X") | — | 1.05 - 1.35 | max 0.06 | max 0.045 | 11 - 14 | 0.3 - 0.9 | 1.5 - 2.5 | | [SCMnH32](/ja/材料/jis/scmnh32 "SCMnH32") | — | 0.75 - 1.35 | max 0.06 | max 0.045 | 11 - 14 | 0.3 - 0.9 | — | | [SCPL21](/ja/材料/jis/scpl21 "SCPL21") | — | max 0.25 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.6 | max 0.35 | | [SCW480](/ja/材料/jis/scw480 "SCW480") | — | max 0.22 | max 0.04 | max 0.04 | max 1.5 | max 0.8 | max 0.5 | | [SC410](/ja/材料/jis/sc410 "SC410") | — | max 0.3 | max 0.04 | max 0.04 | — | — | — | | [SCW480-CF](/ja/材料/jis/scw480-cf "SCW480-CF") | — | max 0.22 | max 0.04 | max 0.04 | max 1.5 | max 0.8 | — | | [SCC5](/ja/材料/jis/scc5 "SCC5") | — | 0.4 - 0.5 | max 0.04 | max 0.04 | 0.5 - 0.8 | 0.3 - 0.6 | — | | [SCPH1](/ja/材料/jis/scph1 "SCPH1") | — | max 0.25 | max 0.04 | max 0.04 | max 0.7 | max 0.6 | max 0.25 | | [SCMn5](/ja/材料/jis/scmn5 "SCMn5") | — | 0.4 - 0.5 | max 0.04 | max 0.04 | 1 - 1.6 | 0.3 - 0.6 | — | | [SCPH21](/ja/材料/jis/scph21 "SCPH21") | — | max 0.2 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.6 | 1 - 1.5 | | [SCSiMn2](/ja/材料/jis/scsimn2 "SCSiMn2") | — | 0.25 - 0.35 | max 0.04 | max 0.04 | 0.9 - 1.2 | 0.5 - 0.8 | — | | [SCPH61](/ja/材料/jis/scph61 "SCPH61") | — | max 0.2 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.75 | 4 - 6.5 | | [SCMnCrM3](/ja/材料/jis/scmncrm3 "SCMnCrM3") | — | 0.3 - 0.4 | max 0.04 | max 0.04 | 1.2 - 1.6 | 0.3 - 0.6 | 0.3 - 0.7 | | [SCPH11-CF](/ja/材料/jis/scph11-cf "SCPH11-CF") | — | max 0.2 | max 0.035 | max 0.035 | 0.3 - 0.6 | max 0.6 | max 0.35 | | [SCMnH2X1](/ja/材料/jis/scmnh2x1 "SCMnH2X1") | — | 0.9 - 1.05 | max 0.06 | max 0.045 | 11 - 14 | 0.3 - 0.9 | — | | [SCMnH11](/ja/材料/jis/scmnh11 "SCMnH11") | — | 0.9 - 1.3 | max 0.07 | max 0.04 | 11 - 14 | max 0.8 | 1.5 - 2.5 | | [SCMnH31](/ja/材料/jis/scmnh31 "SCMnH31") | — | 1.05 - 1.35 | max 0.06 | max 0.045 | 6 - 8 | 0.3 - 0.9 | — | | [SCPL11](/ja/材料/jis/scpl11 "SCPL11") | — | max 0.25 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.6 | max 0.35 | | [SCW450](/ja/材料/jis/scw450 "SCW450") | — | max 0.22 | max 0.04 | max 0.04 | max 1.5 | max 0.8 | — | | [SC360](/ja/材料/jis/sc360 "SC360") | — | max 0.2 | max 0.04 | max 0.04 | — | — | — | | [SCW410-CF](/ja/材料/jis/scw410-cf "SCW410-CF") | — | max 0.22 | max 0.04 | max 0.04 | max 1.5 | max 0.8 | — | | [SCC3](/ja/材料/jis/scc3 "SCC3") | — | 0.3 - 0.4 | max 0.04 | max 0.04 | 0.5 - 0.8 | 0.3 - 0.6 | — | | [SCW570-CF](/ja/材料/jis/scw570-cf "SCW570-CF") | — | max 0.2 | max 0.04 | max 0.04 | max 1.5 | max 1 | max 0.5 | | [SCPH11](/ja/材料/jis/scph11 "SCPH11") | — | max 0.25 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.6 | max 0.35 | | [SCMnCr4](/ja/材料/jis/scmncr4 "SCMnCr4") | — | 0.35 - 0.45 | max 0.04 | max 0.04 | 1.2 - 1.6 | 0.3 - 0.6 | 0.4 - 0.8 | | [SCPH32](/ja/材料/jis/scph32 "SCPH32") | — | max 0.2 | max 0.04 | max 0.04 | 0.5 - 0.8 | max 0.6 | 2 - 2.75 | | [SCMnCrM2](/ja/材料/jis/scmncrm2 "SCMnCrM2") | — | 0.25 - 0.35 | max 0.04 | max 0.04 | 1.2 - 1.6 | 0.3 - 0.6 | 0.3 - 0.7 | | [SCPH2-CF](/ja/材料/jis/scph2-cf "SCPH2-CF") | — | max 0.3 | max 0.04 | max 0.04 | max 1.1 | max 0.6 | max 0.25 | 2 ページ中 1 ページ[次へ](/ja/%E3%82%AB%E3%83%86%E3%82%B4%E3%83%AA%E3%83%BC/%E9%8B%B3%E9%8B%BC/ページ/2 "次へ") ## このカテゴリを扱う規格 2 - [**JIS***59 鋼種*](/ja/材料/jis "JIS — このカテゴリ内 59 鋼種") - [**KS***4 鋼種*](/ja/材料/ks "KS — このカテゴリ内 4 鋼種") ## 物性の範囲 5 | 物性 | 単位 | 下限 | 上限 | 鋼種数 | |---|---|---|---|---| | Rm | N/mm² | 360 | 880 | 49 | | Re | N/mm² | 175 | 685 | 46 | | A | % | 9 | 35 | 49 | | Z | % | 15 | 35 | 30 | | HB | — | 143 | 300 | 23 | このカテゴリ内で値が記録されている49 鋼種から算出。 ## 化学成分の範囲 11 | 物性 | 単位 | 下限 | 上限 | 鋼種数 | |---|---|---|---|---| | C | % | 0.15 | 1.35 | 59 | | Si | % | 0.3 | 1 | 54 | | P | % | 0.03 | 0.1 | 59 | | S | % | 0.03 | 0.05 | 59 | | V | % | 0.15 | 0.7 | 5 | | Cr | % | 0.2 | 6.5 | 34 | | Mn | % | 0.3 | 19 | 55 | | Ni | % | 0.5 | 4 | 23 | | Cu | % | 0.5 | 0.5 | 17 | | Mo | % | 0.15 | 1.8 | 25 | | W | % | 0.1 | 0.1 | 9 | このカテゴリ内で値が記録されている59 鋼種から算出。