--- title: "SCH47 — Heat-resistant cast steels" description: "SCH47: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/jis/sch47 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/jis/sch47.md cs: https://steelequivalents.com/cs/materiály/jis/sch47.md de: https://steelequivalents.com/de/werkstoffe/jis/sch47.md es: https://steelequivalents.com/es/materiales/jis/sch47.md fr: https://steelequivalents.com/fr/matériaux/jis/sch47.md hu: https://steelequivalents.com/hu/anyagok/jis/sch47.md it: https://steelequivalents.com/it/materiali/jis/sch47.md nl: https://steelequivalents.com/nl/materialen/jis/sch47.md pl: https://steelequivalents.com/pl/materiały/jis/sch47.md pt: https://steelequivalents.com/pt/materiais/jis/sch47.md ru: https://steelequivalents.com/ru/материалы/jis/sch47.md tr: https://steelequivalents.com/tr/malzemeler/jis/sch47.md zh: https://steelequivalents.com/zh/材料/jis/sch47.md ja: https://steelequivalents.com/ja/材料/jis/sch47.md ar: https://steelequivalents.com/ar/المواد/jis/sch47.md ko: https://steelequivalents.com/ko/재료/jis/sch47.md pt-br: https://steelequivalents.com/pt-br/materiais/jis/sch47.md hi: https://steelequivalents.com/hi/सामग्री/jis/sch47.md content_hash: sha256:ab553349608a7cc384d6391733d85bda0cacde8f227373b82645712b5133ff43 generated: 2026-09-24 --- > **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/jis/sch47 > Canonical URL: https://steelequivalents.com/materials/jis/sch47 > 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. JIS · Japan · 1 designation # SCH47 SCH47 is a material in the category [Heat-resistant cast steels](/categories/heat-resistant-cast-steels "Heat-resistant cast steels"). Its recorded composition includes C ≤ 0.5%, Si ≤ 1%, Cr 25–30%, Fe ≤ 20% and Co 48–52%. No cross-standard equivalents are recorded for this grade yet. - [*Category* **Heat-resistant cast steels · 82 grades**](/categories/heat-resistant-cast-steels "Category: Heat-resistant cast steels · 82 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=9c19058c-bfc2-4215-be28-29ce74cf1706&designation=e2733286-2c53-4983-ac2f-7b052f9e4bdd "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jis/sch47.pdf "Datasheet as PDF") ## About Heat-resistant cast steels Heat-resistant cast steels are cast ferrous alloys formulated for service at elevated temperatures, where resistance to softening and thermal degradation is important. They are used for furnace components, heat-treatment equipment and other high-temperature plant parts that require cast shapes and dependable mechanical performance during heating. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Chemical composition 10 elements on file · weight % What this alloy is Fe Co Cr Si Iron — the balance, never listed by a standard — 18.4 % Co — 50 % Cr — 27.5 % Si — 1 % Traces & impurities · 3.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.5 | | Si | ≤ 1 | | Mn | ≤ 1 | | P | ≤ 0.04 | | S | ≤ 0.03 | | Cr | 25–30 | | Mo | ≤ 0.5 | | Ni | ≤ 1 | | Co | 48–52 — Unusual | | Fe | ≤ 20 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Cobalt Iron 0.01 % 0.1 % 1 % 10 % 100 % The scale is logarithmic, not the element’s raw share of the alloy — the only honest way to fit 0.01 % and 100 % in one picture, and it means every value here can be compared with every other. | Element | As published source text, verbatim | Min% by weight | Max% by weight | Bound | |---|---|---|---|---| | C | max 0.5 | — | 0.500 | Max | | Si | max 1 | — | 1.000 | Max | | P | max 0.04 | — | 0.040 | Max | | S | max 0.03 | — | 0.030 | Max | | Cr | 25 - 30 | 25.000 | 30.000 | Range | | Mn | max 1 | — | 1.000 | Max | | Fe | max 20 | — | 20.000 | Max | | Co | 48 - 52 | 48.000 | 52.000 | Range | | Ni | max 1 | — | 1.000 | Max | | Mo | max 0.5 | — | 0.500 | Max | The published column is the source string byte-for-byte, decimal comma and all; Min and Max are the parsed bounds. Elements not listed have no value on file — they are omitted, never inferred. ## Predicted transformation temperatures This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here. ## Physical & mechanical properties An absent property means we hold no value for it — it is left out rather than estimated, interpolated from a neighbouring grade, or filled from a handbook. It does not mean the property is undefined for the material. ## Looking for this grade under another name? 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?material=9c19058c-bfc2-4215-be28-29ce74cf1706&designation=e2733286-2c53-4983-ac2f-7b052f9e4bdd "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jis/sch47.pdf "Datasheet as PDF")