--- title: "SDP6 — composition, equivalents and standards" description: "SDP6: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/jis/sdp6 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/jis/sdp6.md cs: https://steelequivalents.com/cs/materiály/jis/sdp6.md de: https://steelequivalents.com/de/werkstoffe/jis/sdp6.md es: https://steelequivalents.com/es/materiales/jis/sdp6.md fr: https://steelequivalents.com/fr/matériaux/jis/sdp6.md hu: https://steelequivalents.com/hu/anyagok/jis/sdp6.md it: https://steelequivalents.com/it/materiali/jis/sdp6.md nl: https://steelequivalents.com/nl/materialen/jis/sdp6.md pl: https://steelequivalents.com/pl/materiały/jis/sdp6.md pt: https://steelequivalents.com/pt/materiais/jis/sdp6.md ru: https://steelequivalents.com/ru/материалы/jis/sdp6.md tr: https://steelequivalents.com/tr/malzemeler/jis/sdp6.md zh: https://steelequivalents.com/zh/材料/jis/sdp6.md ja: https://steelequivalents.com/ja/材料/jis/sdp6.md ar: https://steelequivalents.com/ar/المواد/jis/sdp6.md ko: https://steelequivalents.com/ko/재료/jis/sdp6.md pt-br: https://steelequivalents.com/pt-br/materiais/jis/sdp6.md hi: https://steelequivalents.com/hi/सामग्री/jis/sdp6.md content_hash: sha256:1fe8985557e774d80cf18b44c88522e53bbb77209aea96475c1565c98e6f38b8 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/jis/sdp6 > Canonical URL: https://steelequivalents.com/materials/jis/sdp6 > 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 # SDP6 SDP6 is a grade designated under JIS. Its recorded composition includes C ≤ 0.08%, Si ≤ 1%, Cr 18–20%, Mn ≤ 2.5% and Ni 7.5–10.5%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm 690 N/mm², Re 325 N/mm² and A 35%. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=3b1c674f-38f2-41d9-9e8e-ce076dc35897&designation=d72e1473-5796-48af-8155-7f7c2412bbae "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jis/sdp6.pdf "Datasheet as PDF") ## Chemical composition 9 elements on file · weight % What this alloy is Fe Cr Ni Mn Iron — the balance, never listed by a standard — 68 % Cr — 19 % Ni — 9 % Mn — 2.5 % Traces & impurities · 1.5 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.08 | | Si | ≤ 1 | | Mn | ≤ 2.5 | | P | ≤ 0.045 | | S | ≤ 0.03 | | Cr | 18–20 | | Ni | 7.5–10.5 | | Nb | ≤ 0.15 | | N | 0.15–0.3 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Nickel Niobium Nitrogen 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 0.08 | — | 0.080 | Max | | N | 0.15 - 0.3 | 0.150 | 0.300 | Range | | Si | max 1 | — | 1.000 | Max | | P | max 0.045 | — | 0.045 | Max | | S | max 0.03 | — | 0.030 | Max | | Cr | 18 - 20 | 18.000 | 20.000 | Range | | Mn | max 2.5 | — | 2.500 | Max | | Ni | 7.5 - 10.5 | 7.500 | 10.500 | Range | | Nb | max 0.15 | — | 0.150 | 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 Not enough recorded composition to predict a transformation temperature for this grade — missing: 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=3b1c674f-38f2-41d9-9e8e-ce076dc35897&designation=d72e1473-5796-48af-8155-7f7c2412bbae "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jis/sdp6.pdf "Datasheet as PDF")