--- title: "SBPD1080/1230 — composition, equivalents and standards" description: "SBPD1080/1230: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/jis/sbpd1080-1230 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/jis/sbpd1080-1230.md cs: https://steelequivalents.com/cs/materiály/jis/sbpd1080-1230.md de: https://steelequivalents.com/de/werkstoffe/jis/sbpd1080-1230.md es: https://steelequivalents.com/es/materiales/jis/sbpd1080-1230.md fr: https://steelequivalents.com/fr/matériaux/jis/sbpd1080-1230.md hu: https://steelequivalents.com/hu/anyagok/jis/sbpd1080-1230.md it: https://steelequivalents.com/it/materiali/jis/sbpd1080-1230.md nl: https://steelequivalents.com/nl/materialen/jis/sbpd1080-1230.md pl: https://steelequivalents.com/pl/materiały/jis/sbpd1080-1230.md pt: https://steelequivalents.com/pt/materiais/jis/sbpd1080-1230.md ru: https://steelequivalents.com/ru/материалы/jis/sbpd1080-1230.md tr: https://steelequivalents.com/tr/malzemeler/jis/sbpd1080-1230.md zh: https://steelequivalents.com/zh/材料/jis/sbpd1080-1230.md ja: https://steelequivalents.com/ja/材料/jis/sbpd1080-1230.md ar: https://steelequivalents.com/ar/المواد/jis/sbpd1080-1230.md ko: https://steelequivalents.com/ko/재료/jis/sbpd1080-1230.md pt-br: https://steelequivalents.com/pt-br/materiais/jis/sbpd1080-1230.md hi: https://steelequivalents.com/hi/सामग्री/jis/sbpd1080-1230.md content_hash: sha256:fe619d42f787f2de3e9bfe99661ee95c1fc08aae57f4a91b777c01091c7ce08d 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/sbpd1080-1230 > Canonical URL: https://steelequivalents.com/materials/jis/sbpd1080-1230 > 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 # SBPD1080/1230 SBPD1080/1230 is a grade designated under JIS. Its recorded composition includes P ≤ 0.03%, S ≤ 0.035% and Cu ≤ 0.3%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm 1230 N/mm², Re 1080 N/mm² and A 5%. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=0d972be1-66b9-4025-8237-f61c3fd442d8&designation=3f55729c-409c-4050-9174-5f0bc9b6f6d5 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jis/sbpd1080-1230.pdf "Datasheet as PDF") ## Chemical composition 3 elements on file · weight % What this alloy is Fe Cu S P Iron — the balance, never listed by a standard — 99.6 % Cu — 0.3 % S — 0 % P — 0 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | P | ≤ 0.03 | | S | ≤ 0.035 | | Cu | ≤ 0.3 | Phosphorus Sulfur Copper 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 | |---|---|---|---|---| | P | max 0.03 | — | 0.030 | Max | | S | max 0.035 | — | 0.035 | Max | | Cu | 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 Not enough recorded composition to predict a transformation temperature for this grade — missing: C, Mn, 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=0d972be1-66b9-4025-8237-f61c3fd442d8&designation=3f55729c-409c-4050-9174-5f0bc9b6f6d5 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/jis/sbpd1080-1230.pdf "Datasheet as PDF")