--- title: "ст.40XH — 40NiCr6, 19 equivalent designations" description: "ст.40XH in GOST: material number 1.5711, also listed as 40NiCr6. It is a material in the category Others. Designations recorded for this grade: 19." canonical: https://steelequivalents.com/materials/gost/st-40xh language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/st-40xh.md cs: https://steelequivalents.com/cs/materiály/gost/st-40xh.md de: https://steelequivalents.com/de/werkstoffe/gost/st-40xh.md es: https://steelequivalents.com/es/materiales/gost/st-40xh.md fr: https://steelequivalents.com/fr/matériaux/gost/st-40xh.md hu: https://steelequivalents.com/hu/anyagok/gost/st-40xh.md it: https://steelequivalents.com/it/materiali/gost/st-40xh.md nl: https://steelequivalents.com/nl/materialen/gost/st-40xh.md pl: https://steelequivalents.com/pl/materiały/gost/st-40xh.md pt: https://steelequivalents.com/pt/materiais/gost/st-40xh.md ru: https://steelequivalents.com/ru/материалы/gost/ст.40xh.md tr: https://steelequivalents.com/tr/malzemeler/gost/st-40xh.md zh: https://steelequivalents.com/zh/材料/gost/st-40xh.md ja: https://steelequivalents.com/ja/材料/gost/st-40xh.md ar: https://steelequivalents.com/ar/المواد/gost/st-40xh.md ko: https://steelequivalents.com/ko/재료/gost/st-40xh.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/st-40xh.md hi: https://steelequivalents.com/hi/सामग्री/gost/st-40xh.md content_hash: sha256:aa933d11133fc1dc467388a69110bd5fba12dc83c3f668302a23e475b40b34d1 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/gost/st-40xh > Canonical URL: https://steelequivalents.com/materials/gost/st-40xh > 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. GOST · Russia / CIS · 19 designations # ст.40XH ст.40XH is a designation in GOST for the material held under material number 1.5711, also listed as 40NiCr6. It is a material in the category Others. We list 19 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, JIS, GB and GOST. - [*Material no.* **1.5711**](/materials/material-no/1.5711 "Material no.: 1.5711") - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - *Designations* **19** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=580689b1-870a-4102-8275-a54930ccd38e&designation=ae5aa6d4-671c-4ef4-8ab0-9e7978aeb270 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/st-40xh.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 40NiCr6 This grade’s own name](/materials/din-en/40nicr6 "DIN / EN 40NiCr6") - [UNS G31400 This grade’s own name](/materials/uns/g31400 "UNS G31400") - [AISI / SAE 3140 This grade’s own name · 2 grades on that route](/materials/aisi-sae/3140 "AISI / SAE 3140") ## About Others These are miscellaneous metallic alloys that do not fit a more specific material family and may be based on iron, nickel, cobalt, copper or other alloy systems. They are selected for applications requiring particular combinations of strength, hardness, toughness, wear resistance or resistance to demanding service conditions. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 19 designations · 9 standards · nothing hidden This grade’s own name recorded in our sources as this grade’s own designation under that standard. Indicative taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering. Withdrawn designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once. DIN / EN Europe · 1 - [40NiCr6 This grade’s own name](/materials/din-en/40nicr6 "DIN / EN 40NiCr6") UNS United States · 2 - [G31400 This grade’s own name](/materials/uns/g31400 "UNS G31400") - [K22033 Indicative](/materials/uns/k22033 "UNS K22033") AISI / SAE United States · 4 - [3135 Indicative](/materials/aisi-sae/3135 "AISI / SAE 3135") - [3140 This grade’s own name](/materials/aisi-sae/3140 "AISI / SAE 3140") - [A3141 This grade’s own name](/materials/aisi-sae/a3141 "AISI / SAE A3141") - [X3140 This grade’s own name](/materials/aisi-sae/x3140 "AISI / SAE X3140") ASTM United States · 3 - [3135 3140 Indicative](/materials/astm/3135-3140 "ASTM 3135 3140") - [3140H Indicative](/materials/aisi-sae/3140h "ASTM 3140H") - [AMS 6330E Indicative](/materials/astm/ams-6330e "ASTM AMS 6330E") BS United Kingdom · 3 - [640A35 Indicative](/materials/bs/640a35 "BS 640A35") - [640M40 Indicative](/materials/bs/640m40 "BS 640M40") - [EN111A Indicative](/materials/bs/en111a "BS EN111A") AFNOR France · 2 - [30NC6 Indicative](/materials/afnor/30nc6 "AFNOR 30NC6") - [35NC6 Indicative](/materials/afnor/35nc6 "AFNOR 35NC6") JIS Japan · 1 - [SNC236 Indicative](/materials/jis/snc236 "JIS SNC236") GB China · 1 - [40CrNi Indicative](/materials/gb/40crni "GB 40CrNi") GOST Russia / CIS · 2 - [40XH Indicative](/materials/gost/40xh "GOST 40XH") - **ст.40XH Indicative** Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 7 elements on file · weight % What this alloy is Fe Ni Mn Cr Iron — the balance, never listed by a standard — 96.6 % Ni — 1.3 % Mn — 0.8 % Cr — 0.7 % Traces & impurities · 0.7 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.38–0.43 | | Si | 0.15–0.35 | | Mn | 0.7–0.9 | | P | 0.035 | | S | 0.035 | | Cr | 0.55–0.75 | | Ni | 1.1–1.4 | 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 | 0,38-0,43 | 0.380 | 0.430 | Range | | Si | 0,15-0,35 | 0.150 | 0.350 | Range | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | 0,55-0,75 | 0.550 | 0.750 | Range | | Mn | 0,70-0,90 | 0.700 | 0.900 | Range | | Ni | 1,10-1,40 | 1.100 | 1.400 | 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 Density 7,85 g/cm³ Exact 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. ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.5, a shared category, and a published range for Ni / Mn that overlaps this grade’s. These are neighbours in composition space — they are not equivalents, and none is claimed to be interchangeable with this grade. [15NiCr6-4 1.5807 Ni 1,20-1,60 · Mn 0,60-0,90 - ΔNi 0.15 - ΔMn 0.05 - 1 designations](/materials/din-en/15nicr6-4 "15NiCr6-4")[26 NiCr 6 4 1.5808 Ni 1,20-1,60 · Mn 0,60-0,90 - ΔNi 0.15 - ΔMn 0.05 - 1 designations](/materials/din-en/26-nicr-6-4 "26 NiCr 6 4")[35NiCr6 1.5815 Ni 1,20-1,60 · Mn 0,60-0,90 - ΔNi 0.15 - ΔMn 0.05 - 7 designations](/materials/din-en/35nicr6 "35NiCr6") ## 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=580689b1-870a-4102-8275-a54930ccd38e&designation=ae5aa6d4-671c-4ef4-8ab0-9e7978aeb270 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/st-40xh.pdf "Datasheet as PDF")