--- title: "SCW620 — Cast steel" description: "SCW620: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/jis/scw620 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/jis/scw620.md cs: https://steelequivalents.com/cs/materiály/jis/scw620.md de: https://steelequivalents.com/de/werkstoffe/jis/scw620.md es: https://steelequivalents.com/es/materiales/jis/scw620.md fr: https://steelequivalents.com/fr/matériaux/jis/scw620.md hu: https://steelequivalents.com/hu/anyagok/jis/scw620.md it: https://steelequivalents.com/it/materiali/jis/scw620.md nl: https://steelequivalents.com/nl/materialen/jis/scw620.md pl: https://steelequivalents.com/pl/materiały/jis/scw620.md pt: https://steelequivalents.com/pt/materiais/jis/scw620.md ru: https://steelequivalents.com/ru/материалы/jis/scw620.md tr: https://steelequivalents.com/tr/malzemeler/jis/scw620.md zh: https://steelequivalents.com/zh/材料/jis/scw620.md ja: https://steelequivalents.com/ja/材料/jis/scw620.md ar: https://steelequivalents.com/ar/المواد/jis/scw620.md ko: https://steelequivalents.com/ko/재료/jis/scw620.md pt-br: https://steelequivalents.com/pt-br/materiais/jis/scw620.md hi: https://steelequivalents.com/hi/सामग्री/jis/scw620.md content_hash: sha256:93fdc19483f8aeb149b9993076e0312012cf923867ff3bab34d0285189ddafcb 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/scw620 > Canonical URL: https://steelequivalents.com/materials/jis/scw620 > 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 # SCW620 SCW620 is a material in the category [Cast steel](/categories/cast-steel "Cast steel"). Its recorded composition includes C ≤ 0.22%, Si ≤ 0.8%, Cr ≤ 0.5%, Mn ≤ 1.5% and Ni ≤ 2.5%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm 620 N/mm², Re 430 N/mm² and A 17%. - [*Category* **Cast steel · 59 grades**](/categories/cast-steel "Category: Cast steel · 59 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=15544b30-d4e0-4d74-a499-368eff5d4940&designation=a8a63d15-f25f-48cd-be95-4c375c4a2697 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jis/scw620.pdf "Datasheet as PDF") ## About Cast steel Cast steel is a ferrous material produced by pouring steel into moulds to form components. It combines the shape-making flexibility of casting with the strength and toughness associated with steel, making it suitable for complex, heavily loaded parts such as machinery components, structural castings and industrial equipment. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Chemical composition 9 elements on file · weight % What this alloy is Fe Ni Mn Si Iron — the balance, never listed by a standard — 93.9 % Ni — 2.5 % Mn — 1.5 % Si — 0.8 % Traces & impurities · 1.3 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.22 | | Si | ≤ 0.8 | | Mn | ≤ 1.5 | | P | ≤ 0.04 | | S | ≤ 0.04 | | Cr | ≤ 0.5 | | Mo | ≤ 0.3 | | Ni | ≤ 2.5 | | V | ≤ 0.2 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum Nickel Vanadium 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 0.22 | — | 0.220 | Max | | Si | max 0.8 | — | 0.800 | Max | | P | max 0.04 | — | 0.040 | Max | | S | max 0.04 | — | 0.040 | Max | | V | max 0.2 | — | 0.200 | Max | | Cr | max 0.5 | — | 0.500 | Max | | Mn | max 1.5 | — | 1.500 | Max | | Ni | max 2.5 | — | 2.500 | Max | | Mo | max 0.3 | — | 0.300 | 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 computed from composition · °C Predicted Ae3 784 °C Predicted Ae1 695 °C Predicted Acm 457 °C Predicted Bs 505 °C These four temperatures are a CALCULATION from this grade's own composition, using the published Li, Niebuhr, Meekisho & Atteridge (1998) model — never a measurement, and computed from the UPPER BOUND of each element's specified range, not a mid-range figure. Where this grade also has a measured transformation point (Ac1, Ac3, Ar1, Ar3) on file, it is shown separately, in Physical & mechanical properties, and is never replaced by the predicted figures here — Ae (predicted, equilibrium) and Ac/Ar (measured, on heating or cooling) are different physical quantities and can differ by tens of degrees; a mismatch between the two is not an error in either. ## 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=15544b30-d4e0-4d74-a499-368eff5d4940&designation=a8a63d15-f25f-48cd-be95-4c375c4a2697 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jis/scw620.pdf "Datasheet as PDF")