--- title: "C15 MMn A — composition, equivalents and standards" description: "C15 MMn A: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/is/c15-mmn-a language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/is/c15-mmn-a.md cs: https://steelequivalents.com/cs/materiály/is/c15-mmn-a.md de: https://steelequivalents.com/de/werkstoffe/is/c15-mmn-a.md es: https://steelequivalents.com/es/materiales/is/c15-mmn-a.md fr: https://steelequivalents.com/fr/matériaux/is/c15-mmn-a.md hu: https://steelequivalents.com/hu/anyagok/is/c15-mmn-a.md it: https://steelequivalents.com/it/materiali/is/c15-mmn-a.md nl: https://steelequivalents.com/nl/materialen/is/c15-mmn-a.md pl: https://steelequivalents.com/pl/materiały/is/c15-mmn-a.md pt: https://steelequivalents.com/pt/materiais/is/c15-mmn-a.md ru: https://steelequivalents.com/ru/материалы/is/c15-mmn-a.md tr: https://steelequivalents.com/tr/malzemeler/is/c15-mmn-a.md zh: https://steelequivalents.com/zh/材料/is/c15-mmn-a.md ja: https://steelequivalents.com/ja/材料/is/c15-mmn-a.md ar: https://steelequivalents.com/ar/المواد/is/c15-mmn-a.md ko: https://steelequivalents.com/ko/재료/is/c15-mmn-a.md pt-br: https://steelequivalents.com/pt-br/materiais/is/c15-mmn-a.md hi: https://steelequivalents.com/hi/सामग्री/is/c15-mmn-a.md content_hash: sha256:e5fa406a8f0a08a3503ce4fc9adbb9ce7d670ba62c552c5476b5592828c4632b 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/is/c15-mmn-a > Canonical URL: https://steelequivalents.com/materials/is/c15-mmn-a > 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. IS · India · 1 designation # C15 MMn A C15 MMn A is a grade designated under IS. Its recorded composition includes C 0.12–0.18%, P ≤ 0.05%, S ≤ 0.05% and Mn 0.6–1%. No cross-standard equivalents are recorded for this grade yet. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=62b1b812-8928-45ff-a72c-b78dadb3802c&designation=bc172dd7-e168-4b94-8cbc-cdcefe880ffa "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/is/c15-mmn-a.pdf "Datasheet as PDF") ## Chemical composition 4 elements on file · weight % What this alloy is Fe Mn C P Iron — the balance, never listed by a standard — 99 % Mn — 0.8 % C — 0.2 % P — 0.1 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.12–0.18 | | Mn | 0.6–1 | | P | ≤ 0.05 | | S | ≤ 0.05 | Carbon Manganese Phosphorus Sulfur 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 | 0.12 - 0.18 | 0.120 | 0.180 | Range | | P | max 0.050 | — | 0.050 | Max | | S | max 0.050 | — | 0.050 | Max | | Mn | 0.60 - 1.00 | 0.600 | 1.000 | Range | 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 Not enough recorded composition to predict a transformation temperature for this grade — missing: Si, Ni, Cr, Mo. ## 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=62b1b812-8928-45ff-a72c-b78dadb3802c&designation=bc172dd7-e168-4b94-8cbc-cdcefe880ffa "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/is/c15-mmn-a.pdf "Datasheet as PDF")