--- title: "16MnNb — composition, equivalents and standards" description: "16MnNb: 1 equivalent designations across 1 standards, with the recorded chemical composition shown next to the source text." canonical: https://steelequivalents.com/materials/gb/16mnnb language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gb/16mnnb.md cs: https://steelequivalents.com/cs/materiály/gb/16mnnb.md de: https://steelequivalents.com/de/werkstoffe/gb/16mnnb.md es: https://steelequivalents.com/es/materiales/gb/16mnnb.md fr: https://steelequivalents.com/fr/matériaux/gb/16mnnb.md hu: https://steelequivalents.com/hu/anyagok/gb/16mnnb.md it: https://steelequivalents.com/it/materiali/gb/16mnnb.md nl: https://steelequivalents.com/nl/materialen/gb/16mnnb.md pl: https://steelequivalents.com/pl/materiały/gb/16mnnb.md pt: https://steelequivalents.com/pt/materiais/gb/16mnnb.md ru: https://steelequivalents.com/ru/материалы/gb/16mnnb.md tr: https://steelequivalents.com/tr/malzemeler/gb/16mnnb.md zh: https://steelequivalents.com/zh/材料/gb/16mnnb.md ja: https://steelequivalents.com/ja/材料/gb/16mnnb.md ar: https://steelequivalents.com/ar/المواد/gb/16mnnb.md ko: https://steelequivalents.com/ko/재료/gb/16mnnb.md pt-br: https://steelequivalents.com/pt-br/materiais/gb/16mnnb.md hi: https://steelequivalents.com/hi/सामग्री/gb/16mnnb.md content_hash: sha256:dd4013e90a7f1caaff213ec384bee45fb6eb48532721ceb1de0609b2bbd70bdf 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/gb/16mnnb > Canonical URL: https://steelequivalents.com/materials/gb/16mnnb > 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. GB · China · 1 designation # 16MnNb 16MnNb is a grade designated under GB. Its recorded composition includes C 0.12–0.2%, Si 0.2–0.55%, Cr ≤ 0.3%, Mn 1–1.4% and Ni ≤ 0.3%. No cross-standard equivalents are recorded for this grade yet. - *Designations* **1** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=ed59d0f9-9252-4d11-b7a9-175fb95cf715&designation=b26c489a-2c32-43d4-bedd-730685b86255 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/16mnnb.pdf "Datasheet as PDF") ## Chemical composition 9 elements on file · weight % What this alloy is Fe Mn Si Cr Iron — the balance, never listed by a standard — 97.2 % Mn — 1.2 % Si — 0.4 % Cr — 0.3 % Traces & impurities · 0.9 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.12–0.2 | | Si | 0.2–0.55 | | Mn | 1–1.4 | | P | ≤ 0.045 | | S | ≤ 0.045 | | Cr | ≤ 0.3 | | Ni | ≤ 0.3 | | Cu | ≤ 0.3 | | Nb | 0.015–0.05 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Nickel Copper Niobium 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 | 0.12-0.2 | 0.120 | 0.200 | Range | | Si | 0.2-0.55 | 0.200 | 0.550 | Range | | P | ≤0.045 | — | 0.045 | Max | | S | ≤0.045 | — | 0.045 | Max | | Cr | ≤0.3 | — | 0.300 | Max | | Mn | 1-1.4 | 1.000 | 1.400 | Range | | Ni | ≤0.3 | — | 0.300 | Max | | Cu | ≤0.3 | — | 0.300 | Max | | Nb | 0.015-0.05 | 0.015 | 0.050 | 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. ## 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=ed59d0f9-9252-4d11-b7a9-175fb95cf715&designation=b26c489a-2c32-43d4-bedd-730685b86255 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gb/16mnnb.pdf "Datasheet as PDF")