--- title: "STS302 — Stainless steels" description: "STS302: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/ks/sts302 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/ks/sts302.md cs: https://steelequivalents.com/cs/materiály/ks/sts302.md de: https://steelequivalents.com/de/werkstoffe/ks/sts302.md es: https://steelequivalents.com/es/materiales/ks/sts302.md fr: https://steelequivalents.com/fr/matériaux/ks/sts302.md hu: https://steelequivalents.com/hu/anyagok/ks/sts302.md it: https://steelequivalents.com/it/materiali/ks/sts302.md nl: https://steelequivalents.com/nl/materialen/ks/sts302.md pl: https://steelequivalents.com/pl/materiały/ks/sts302.md pt: https://steelequivalents.com/pt/materiais/ks/sts302.md ru: https://steelequivalents.com/ru/материалы/ks/sts302.md tr: https://steelequivalents.com/tr/malzemeler/ks/sts302.md zh: https://steelequivalents.com/zh/材料/ks/sts302.md ja: https://steelequivalents.com/ja/材料/ks/sts302.md ar: https://steelequivalents.com/ar/المواد/ks/sts302.md ko: https://steelequivalents.com/ko/재료/ks/sts302.md pt-br: https://steelequivalents.com/pt-br/materiais/ks/sts302.md hi: https://steelequivalents.com/hi/सामग्री/ks/sts302.md content_hash: sha256:da12120cb98fdd76e9f0f0a3460fd46b8b345a388968cd8343d3f5c108b6586d 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/ks/sts302 > Canonical URL: https://steelequivalents.com/materials/ks/sts302 > 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. KS · South Korea · 1 designation # STS302 STS302 is a material in the category [Stainless steels](/categories/stainless-steels "Stainless steels"). Its recorded composition includes C ≤ 0.15%, Si ≤ 1%, Cr 17–19%, Mn ≤ 2% and Ni 8–10%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm 520 N/mm², Re 205 N/mm², A 40%, HB 187 and Z 60%. - [*Category* **Stainless steels · 468 grades**](/categories/stainless-steels "Category: Stainless steels · 468 grades") - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=d70dcfbf-8f43-4a11-a4b9-e0423c71f34e&designation=959a88c9-ef66-4596-94c1-8bc6a3a92463 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/ks/sts302.pdf "Datasheet as PDF") ## About Stainless steels Stainless steels are corrosion-resistant alloy steels whose chromium content promotes a protective passive surface film. They are used for equipment, structures and components exposed to moisture, chemicals or hygienic service, with different alloy compositions selected for corrosion resistance, strength, formability or weldability. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Chemical composition 7 elements on file · weight % What this alloy is Fe Cr Ni Mn Iron — the balance, never listed by a standard — 69.8 % Cr — 18 % Ni — 9 % Mn — 2 % Traces & impurities · 1.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.15 | | Si | ≤ 1 | | Mn | ≤ 2 | | P | ≤ 0.045 | | S | ≤ 0.03 | | Cr | 17–19 | | Ni | 8–10 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Nickel 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 0.15 | — | 0.150 | Max | | Si | max 1 | — | 1.000 | Max | | P | max 0.045 | — | 0.045 | Max | | S | max 0.03 | — | 0.030 | Max | | Cr | 17 - 19 | 17.000 | 19.000 | Range | | Mn | max 2 | — | 2.000 | Max | | Ni | 8 - 10 | 8.000 | 10.000 | 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: 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. ## Properties by condition 1 conditions · 4 values By delivery state**no delivery state stated** source `steelks` | Delivery state | Rm N/mm² | Re N/mm² | A% | Z% | |---|---|---|---|---| | Bars | 520 | 205 | 40 | 60 | Every figure holds only for the condition on its own row. Values are never merged across conditions or across sources, never averaged, and never interpolated between two rows. An em dash means no value on file — never zero. Figures are converted to the unit in the column header; the source’s own wording is kept and shown where the two differ. ## 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=d70dcfbf-8f43-4a11-a4b9-e0423c71f34e&designation=959a88c9-ef66-4596-94c1-8bc6a3a92463 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/ks/sts302.pdf "Datasheet as PDF")