--- title: "ПК40Н2М-6.4 — Quenched and tempered steels" description: "ПК40Н2М-6.4 in GOST: material number 1.6511, also listed as 36CrNiMo4. It is a material in the category Quenched and tempered steels." canonical: https://steelequivalents.com/materials/gost/pk40n2m-6-4 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/pk40n2m-6-4.md cs: https://steelequivalents.com/cs/materiály/gost/pk40n2m-6-4.md de: https://steelequivalents.com/de/werkstoffe/gost/pk40n2m-6-4.md es: https://steelequivalents.com/es/materiales/gost/pk40n2m-6-4.md fr: https://steelequivalents.com/fr/matériaux/gost/pk40n2m-6-4.md hu: https://steelequivalents.com/hu/anyagok/gost/pk40n2m-6-4.md it: https://steelequivalents.com/it/materiali/gost/pk40n2m-6-4.md nl: https://steelequivalents.com/nl/materialen/gost/pk40n2m-6-4.md pl: https://steelequivalents.com/pl/materiały/gost/pk40n2m-6-4.md pt: https://steelequivalents.com/pt/materiais/gost/pk40n2m-6-4.md ru: https://steelequivalents.com/ru/материалы/gost/пк40н2м-6.4.md tr: https://steelequivalents.com/tr/malzemeler/gost/pk40n2m-6-4.md zh: https://steelequivalents.com/zh/材料/gost/pk40n2m-6-4.md ja: https://steelequivalents.com/ja/材料/gost/pk40n2m-6-4.md ar: https://steelequivalents.com/ar/المواد/gost/pk40n2m-6-4.md ko: https://steelequivalents.com/ko/재료/gost/pk40n2m-6-4.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/pk40n2m-6-4.md hi: https://steelequivalents.com/hi/सामग्री/gost/pk40n2m-6-4.md content_hash: sha256:2663e2b53bd9ec402f3523cbaf04210c62e0a620b6416f3ced94dd944ada361b 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/pk40n2m-6-4 > Canonical URL: https://steelequivalents.com/materials/gost/pk40n2m-6-4 > 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 · 91 designations # ПК40Н2М-6.4 ПК40Н2М-6.4 is a designation in GOST for the material held under material number 1.6511, also listed as 36CrNiMo4. It is a material in the category Quenched and tempered steels. We list 91 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, SAE AMS, JIS, GOST, UNI, ČSN, PN, SRPS, MSZ, AS / NZS, STAS and BDS. - [*Material no.* **1.6511**](/materials/material-no/1.6511 "Material no.: 1.6511") - [*Category* **Quenched and tempered steels · 133 grades**](/categories/quenched-and-tempered-steels "Category: Quenched and tempered steels · 133 grades") - *Designations* **91** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=9e303002-ec5f-4677-8b35-d4feabf13b86&designation=3cae5c0f-e1c1-42bd-ad7a-df1d60de17c8 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/pk40n2m-6-4.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 36CrNiMo4 This grade’s own name](/materials/din-en/36crnimo4 "DIN / EN 36CrNiMo4") - [UNS G98400 This grade’s own name](/materials/uns/g98400 "UNS G98400") - [AISI / SAE 9840 This grade’s own name · 2 grades on that route](/materials/aisi-sae/9840 "AISI / SAE 9840") ## About Quenched and tempered steels Quenched and tempered steels are heat-treated steels designed to combine high strength with useful toughness and ductility. They are used for heavily loaded components such as shafts, gears, fasteners and structural machine parts where resistance to mechanical stress is required. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 91 designations · 19 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 · 2 - [1.6511 Indicative](/materials/material-no/1.6511 "DIN / EN 1.6511") - [36CrNiMo4 This grade’s own name](/materials/din-en/36crnimo4 "DIN / EN 36CrNiMo4") UNS United States · 2 - [G43400 Indicative](/materials/uns/g43400 "UNS G43400") - [G98400 This grade’s own name](/materials/uns/g98400 "UNS G98400") AISI / SAE United States · 6 - [4340 Indicative](/materials/aisi-sae/4340 "AISI / SAE 4340") - [9840 This grade’s own name](/materials/aisi-sae/9840 "AISI / SAE 9840") - [G43400 Indicative](/materials/uns/g43400 "AISI / SAE G43400") - [G43406 Indicative](/materials/uns/g43406 "AISI / SAE G43406") - [G98400 Indicative](/materials/uns/g98400 "AISI / SAE G98400") - [Gr.9840 Indicative](/materials/aisi-sae/gr-9840 "AISI / SAE Gr.9840") ASTM United States · 1 - [A829 Indicative](/materials/astm/a829 "ASTM A829") BS United Kingdom · 10 - [110 Indicative](/materials/bs/110 "BS 110") - [34CrNiMo6 Indicative](/materials/din-en/34crnimo6 "BS 34CrNiMo6") - [36NiCrMo4 Indicative](/materials/uni/36nicrmo4 "BS 36NiCrMo4") - [708M40 Indicative](/materials/bs/708m40 "BS 708M40") - [816M40 Indicative](/materials/bs/816m40 "BS 816M40") - [817A37 Indicative](/materials/bs/817a37 "BS 817A37") - [817M37 Indicative](/materials/bs/817m37 "BS 817M37") - [817M40 Indicative](/materials/bs/817m40 "BS 817M40") - [818M40 Indicative](/materials/bs/818m40 "BS 818M40") - [EN 110 Indicative](/materials/bs/en-110 "BS EN 110") AFNOR France · 7 - [35NCD2 Indicative](/materials/afnor/35ncd2 "AFNOR 35NCD2") - [35NCD5 Indicative](/materials/afnor/35ncd5 "AFNOR 35NCD5") - [35NCD6 Indicative](/materials/afnor/35ncd6 "AFNOR 35NCD6") - [36CrNiMo4 Indicative](/materials/din-en/36crnimo4 "AFNOR 36CrNiMo4") - [36NiCrMo4 Indicative](/materials/uni/36nicrmo4 "AFNOR 36NiCrMo4") - [40NCD3 Indicative](/materials/afnor/40ncd3 "AFNOR 40NCD3") - [42CD4TS Indicative](/materials/afnor/42cd4ts "AFNOR 42CD4TS") UNE Spain · 5 - [35NiCrMo4 Indicative](/materials/une/35nicrmo4 "UNE 35NiCrMo4") - [36CrNiMo4 Indicative](/materials/din-en/36crnimo4 "UNE 36CrNiMo4") - [42CrMo4 Indicative](/materials/din-en/42crmo4 "UNE 42CrMo4") - [F.1280 Indicative](/materials/une/f-1280 "UNE F.1280") - [F.1280-35NiCrMo4 Indicative](/materials/une/f-1280-35nicrmo4 "UNE F.1280-35NiCrMo4") ISO International · 1 - [36CrNiMo4 Indicative](/materials/din-en/36crnimo4 "ISO 36CrNiMo4") SAE AMS United States / Aerospace · 5 - [6359 Indicative](/materials/ams/6359 "SAE AMS 6359") - [6409 Indicative](/materials/ams/6409 "SAE AMS 6409") - [6414 Indicative](/materials/ams/6414 "SAE AMS 6414") - [6415 Indicative](/materials/ams/6415 "SAE AMS 6415") - [6454 Indicative](/materials/ams/6454 "SAE AMS 6454") JIS Japan · 3 - [SCNM439 Indicative](/materials/jis/scnm439 "JIS SCNM439") - [SNCM439 Indicative](/materials/ks/sncm439 "JIS SNCM439") - [SNCM447 Indicative](/materials/jis/sncm447 "JIS SNCM447") GOST Russia / CIS · 31 - [36ChNM Indicative](/materials/gost/36chnm "GOST 36ChNM") - [36KhNM Indicative](/materials/gost/36khnm "GOST 36KhNM") - [40G2 Indicative](/materials/gost/40g2 "GOST 40G2") - [40KhN2L Indicative](/materials/gost/40khn2l "GOST 40KhN2L") - [40KHN2MA Indicative](/materials/gost/40khn2ma "GOST 40KHN2MA") - [40KHN2MА Indicative](/materials/gost/40khn2ma "GOST 40KHN2MА") - [40KHN2SMA-VD Indicative](/materials/gost/40khn2sma-vd "GOST 40KHN2SMA-VD") - [40KhN2VA Indicative](/materials/gost/40khn2va "GOST 40KhN2VA") - [40KHSN2MА Indicative](/materials/gost/40khsn2ma "GOST 40KHSN2MА") - [40ХН2МА Indicative](/materials/gost/40khn2ma "GOST 40ХН2МА") - [40ХН2МА-Ш Indicative](/materials/gost/40khn2ma-sh "GOST 40ХН2МА-Ш") - [40ХНВА Indicative](/materials/gost/40khnva "GOST 40ХНВА") - [40ХНМА Indicative](/materials/gost/40khnma "GOST 40ХНМА") - [EI-643-VD Indicative](/materials/gost/ei643-vd "GOST EI-643-VD") - [PK40G2 Indicative](/materials/gost/pk40g2 "GOST PK40G2") - [PK40Kh2 Indicative](/materials/gost/pk40kh2 "GOST PK40Kh2") - [PK40KhN2G Indicative](/materials/gost/pk40khn2g "GOST PK40KhN2G") - [PK40N2M Indicative](/materials/gost/pk40n2m "GOST PK40N2M") - [ПК40Г2-7.4 Indicative](/materials/gost/pk40g2-7-4 "GOST ПК40Г2-7.4") - **ПК40Н2М-6.4 Indicative** - [ПК40Н2М-6.8 Indicative](/materials/gost/pk40n2m-6-8 "GOST ПК40Н2М-6.8") - [ПК40Н2М-7.2 Indicative](/materials/gost/pk40n2m-7-2 "GOST ПК40Н2М-7.2") - [ПК40Н2М-7.6 Indicative](/materials/gost/pk40n2m-7-6 "GOST ПК40Н2М-7.6") - [ПК40Х2-6.4 Indicative](/materials/gost/pk40kh2-6-4 "GOST ПК40Х2-6.4") - [ПК40Х2-6.8 Indicative](/materials/gost/pk40kh2-6-8 "GOST ПК40Х2-6.8") - [ПК40Х2-7.4 Indicative](/materials/gost/pk40kh2-7-4 "GOST ПК40Х2-7.4") - [ПК40ХН2Г-6.4 Indicative](/materials/gost/pk40khn2g-6-4 "GOST ПК40ХН2Г-6.4") - [ПК40ХН2Г-6.8 Indicative](/materials/gost/pk40khn2g-6-8 "GOST ПК40ХН2Г-6.8") - [ПК40ХН2Г-7.4 Indicative](/materials/gost/pk40khn2g-7-4 "GOST ПК40ХН2Г-7.4") - [ст.40ХН2МА Indicative](/materials/gost/st-40khn2ma "GOST ст.40ХН2МА") - [ЭИ643-ВД Indicative](/materials/gost/ei643-vd "GOST ЭИ643-ВД") UNI Italy · 6 - [35NiCrMo6KB Indicative](/materials/uni/35nicrmo6kb "UNI 35NiCrMo6KB") - [36NiCrMo4 Indicative](/materials/uni/36nicrmo4 "UNI 36NiCrMo4") - [38NiCrMo4 Indicative](/materials/uni/38nicrmo4 "UNI 38NiCrMo4") - [38NiCrMo4KB Indicative](/materials/uni/38nicrmo4kb "UNI 38NiCrMo4KB") - [40NiCrMo7 Indicative](/materials/uni/40nicrmo7 "UNI 40NiCrMo7") - [KB Indicative](/materials/uni/kb "UNI KB") ČSN Czechia · 4 - [16 XXX NN Indicative](/materials/csn/16-xxx-nn "ČSN 16 XXX NN") - [16341 Indicative](/materials/csn/16341 "ČSN 16341") - [16342 Indicative](/materials/csn/16342 "ČSN 16342") - [16343 Indicative](/materials/csn/16343 "ČSN 16343") PN Poland · 2 - [36HNM Indicative](/materials/pn/36hnm "PN 36HNM") - [40HNMA Indicative](/materials/pn/40hnma "PN 40HNMA") SRPS Serbia · 1 - [Č.5430 Indicative](/materials/srps/c-5430 "SRPS Č.5430") MSZ Hungary · 1 - [36CrNiMo4 Indicative](/materials/din-en/36crnimo4 "MSZ 36CrNiMo4") AS / NZS Australia / New Zealand · 1 - [4340 Indicative](/materials/aisi-sae/4340 "AS / NZS 4340") STAS Romania · 1 - [T35MoCrNi08 Indicative](/materials/stas/t35mocrni08 "STAS T35MoCrNi08") BDS Bulgaria · 2 - [36CrNiMo4 Indicative](/materials/din-en/36crnimo4 "BDS 36CrNiMo4") - [40ChN2MA Indicative](/materials/bds/40chn2ma "BDS 40ChN2MA") Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here. ## Chemical composition 8 elements on file · weight % What this alloy is Fe Cr Ni Mn Iron — the balance, never listed by a standard — 96.2 % Cr — 1.1 % Ni — 1.1 % Mn — 0.7 % Traces & impurities · 1.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.32–0.4 | | Si | ≤ 0.4 | | Mn | 0.5–0.8 | | P | 0.035 | | S | 0.035 | | Cr | 0.9–1.2 | | Mo | 0.15–0.3 | | Ni | 0.9–1.2 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Molybdenum 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 | 0,32-0,40 | 0.320 | 0.400 | Range | | Si | ≤0,40 | — | 0.400 | Max | | P | 0,035 | 0.035 | 0.035 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | 0,90-1,20 | 0.900 | 1.200 | Range | | Mn | 0,50-0,80 | 0.500 | 0.800 | Range | | Ni | 0,90-1,20 | 0.900 | 1.200 | Range | | Mo | 0,15-,30 | 0.150 | 0.300 | 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 computed from composition · °C Predicted Ae3 766 °C Predicted Ae1 731 °C Predicted Acm 607 °C Predicted Bs 515 °C These four temperatures are a CALCULATION from this grade's own composition, using the published Li, Niebuhr, Meekisho & Atteridge (1998) model — never a measurement, and computed from the UPPER BOUND of each element's specified range, not a mid-range figure. Where this grade also has a measured transformation point (Ac1, Ac3, Ar1, Ar3) on file, it is shown separately, in Physical & mechanical properties, and is never replaced by the predicted figures here — Ae (predicted, equilibrium) and Ac/Ar (measured, on heating or cooling) are different physical quantities and can differ by tens of degrees; a mismatch between the two is not an error in either. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 713 °C Exact Transformation point Ac3 780 °C Exact · Ac3(Acm) Transformation point Ar3 710 °C Exact · Ar3(Arcm) Transformation point Ar1 627 °C Exact Weldability difficult to weld As published: hard weldability. Flake sensitivity susceptible As published: predisposed Temper brittleness susceptible As published: predisposed 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 6 conditions · 41 values By thickness**Quenched and tempered** source `steelnumber` | Thickness mm | ReH N/mm² | Rm N/mm² | A% | |---|---|---|---| | ≤ 8 | 900 | 1100 | 10 | | 8 – 20 | 800 | 1000 | 11 | | 20 – 50 | 700 | 900 | 12 | | 50 – 80 | 600 | 800 | 13 | | ≤ 160 | — | 750 | 14 | | 160 – 330 | — | 700 | 15 | | 330 – 660 | — | 650 | 16 | By dimension**Quenching 820°C, water, Drawing 600°C, water** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | KCU kJ/m² | |---|---|---|---|---|---| | Ø 50 | 770 | 590 | 18 | 57 | 680 | | Ø 75 | 730 | 540 | 18 | 54 | 590 | | Ø 100 | 720 | 490 | 18 | 56 | 290 | By dimension**Quenching and drawing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | Ø 25 | 660 | 380 | 12 | 40 | By delivery state**no delivery state stated** source `splav` | Delivery state | HB | |---|---| | (annealing) , GOST 4543-71 | 217 | By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | |---|---| | Soft annealed | 241 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Elastic modulus GPa | |---|---|---| | 20 | 7.8 | 212 | 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. ## Similar grades — and why Selection rule, stated so you can disagree with it: same number class 1.6, a shared category, and a published range for Cr / Ni 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. [28NiCrMo4 1.6513 Cr 1,00-1,30 · Ni 1,00-1,30 - ΔCr 0.10 - ΔNi 0.10 - 1 designations](/materials/din-en/28nicrmo4 "28NiCrMo4")[33NiCrMo6 1.6567 Cr 0,85-1,15 · Ni 1,20-1,60 - ΔCr 0.05 - ΔNi 0.35 - 1 designations](/materials/din-en/33nicrmo6 "33NiCrMo6")[41SiNiCrMoV7-6 1.6928 Cr 0,60-1,00 · Ni 1,20-1,70 - ΔCr 0.25 - ΔNi 0.40 - 7 designations](/materials/din-en/41sinicrmov7-6 "41SiNiCrMoV7-6") ## 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=9e303002-ec5f-4677-8b35-d4feabf13b86&designation=3cae5c0f-e1c1-42bd-ad7a-df1d60de17c8 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/pk40n2m-6-4.pdf "Datasheet as PDF")