--- title: "20NC11 — Case hardening steels" description: "20NC11 in AFNOR: material number 1.5752, also listed as 14NiCr14. Category: Case hardening steels. Designations recorded for this grade: 53." canonical: https://steelequivalents.com/materials/afnor/20nc11 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/afnor/20nc11.md cs: https://steelequivalents.com/cs/materiály/afnor/20nc11.md de: https://steelequivalents.com/de/werkstoffe/afnor/20nc11.md es: https://steelequivalents.com/es/materiales/afnor/20nc11.md fr: https://steelequivalents.com/fr/matériaux/afnor/20nc11.md hu: https://steelequivalents.com/hu/anyagok/afnor/20nc11.md it: https://steelequivalents.com/it/materiali/afnor/20nc11.md nl: https://steelequivalents.com/nl/materialen/afnor/20nc11.md pl: https://steelequivalents.com/pl/materiały/afnor/20nc11.md pt: https://steelequivalents.com/pt/materiais/afnor/20nc11.md ru: https://steelequivalents.com/ru/материалы/afnor/20nc11.md tr: https://steelequivalents.com/tr/malzemeler/afnor/20nc11.md zh: https://steelequivalents.com/zh/材料/afnor/20nc11.md ja: https://steelequivalents.com/ja/材料/afnor/20nc11.md ar: https://steelequivalents.com/ar/المواد/afnor/20nc11.md ko: https://steelequivalents.com/ko/재료/afnor/20nc11.md pt-br: https://steelequivalents.com/pt-br/materiais/afnor/20nc11.md hi: https://steelequivalents.com/hi/सामग्री/afnor/20nc11.md content_hash: sha256:59e41ecca913ee807bcadc609bef9c2b752a8dcf2d914c25c39626724cc15825 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/afnor/20nc11 > Canonical URL: https://steelequivalents.com/materials/afnor/20nc11 > 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. AFNOR · France · 53 designations # 20NC11 20NC11 is a designation in AFNOR for the material held under material number 1.5752, also listed as 14NiCr14. It is a material in the category Case hardening steels. We list 53 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS, AFNOR, ISO, JIS, GB, GOST, UNI, ČSN, PN, STN, SRPS, MSZ and BDS. - [*Material no.* **1.5752**](/materials/material-no/1.5752 "Material no.: 1.5752") - [*Category* **Case hardening steels · 60 grades**](/categories/case-hardening-steels "Category: Case hardening steels · 60 grades") - *Designations* **53** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=c34ca995-e0f2-4a38-93b3-130eab5cf4aa&designation=a8f6477d-e8c8-4847-bca3-194762abc082 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/20nc11.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 15NiCr13 This grade’s own name · 2 grades on that route](/materials/din-en/15nicr13 "DIN / EN 15NiCr13") - [UNS G33106 This grade’s own name · 2 grades on that route](/materials/uns/g33106 "UNS G33106") - [AISI / SAE 3310 This grade’s own name · 3 grades on that route](/materials/aisi-sae/3310 "AISI / SAE 3310") ## About Case hardening steels Case hardening steels are steels designed to develop a hard, wear-resistant surface while retaining a tough and ductile core. They are used for components such as gears, shafts and other machine parts exposed to contact wear and cyclic loading. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 53 designations · 16 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 · 3 - [1.5752 Indicative](/materials/material-no/1.5752 "DIN / EN 1.5752") - [14NiCr14 This grade’s own name Withdrawn](/materials/din-en/14nicr14 "DIN / EN 14NiCr14") - [15NiCr13 This grade’s own name](/materials/din-en/15nicr13 "DIN / EN 15NiCr13") UNS United States · 1 - [G33106 This grade’s own name](/materials/uns/g33106 "UNS G33106") AISI / SAE United States · 13 - [3310 This grade’s own name](/materials/aisi-sae/3310 "AISI / SAE 3310") - [3310H Indicative](/materials/aisi-sae/3310h "AISI / SAE 3310H") - [3310RH This grade’s own name](/materials/aisi-sae/3310rh "AISI / SAE 3310RH") - [3312 This grade’s own name](/materials/aisi-sae/3312 "AISI / SAE 3312") - [3316 This grade’s own name](/materials/aisi-sae/3316 "AISI / SAE 3316") - [3415 Indicative](/materials/aisi-sae/3415 "AISI / SAE 3415") - [9314 Indicative](/materials/aisi-sae/9314 "AISI / SAE 9314") - [E3310 Indicative](/materials/aisi-sae/e3310 "AISI / SAE E3310") - [E3310X Indicative](/materials/aisi-sae/e3310x "AISI / SAE E3310X") - [E3316 This grade’s own name](/materials/aisi-sae/e3316 "AISI / SAE E3316") - [E9315 This grade’s own name](/materials/aisi-sae/e9315 "AISI / SAE E9315") - [G33106 Indicative](/materials/uns/g33106 "AISI / SAE G33106") - [P 6 Indicative](/materials/aisi-sae/p-6 "AISI / SAE P 6") BS United Kingdom · 5 - [36A Indicative](/materials/bs/36a "BS 36A") - [655H13 Indicative](/materials/bs/655h13 "BS 655H13") - [655M13 Indicative](/materials/bs/655m13 "BS 655M13") - [A12 EN 36A Indicative](/materials/bs/a12-en-36a "BS A12 EN 36A") - [EN36A Indicative](/materials/bs/en36a "BS EN36A") AFNOR France · 6 - [12NC15 Indicative](/materials/afnor/12nc15 "AFNOR 12NC15") - [13NiCr14 Indicative](/materials/afnor/13nicr14 "AFNOR 13NiCr14") - [14 NC 11 Indicative](/materials/afnor/14nc11 "AFNOR 14 NC 11") - [14 NC 12 Indicative](/materials/afnor/14-nc-12 "AFNOR 14 NC 12") - [16NC11 Indicative](/materials/afnor/16nc11 "AFNOR 16NC11") - **20NC11 Indicative** ISO International · 1 - [15NiCr13 Indicative](/materials/din-en/15nicr13 "ISO 15NiCr13") JIS Japan · 2 - [SNC815 Indicative](/materials/jis/snc815 "JIS SNC815") - [SNC815H Indicative](/materials/jis/snc815h "JIS SNC815H") GB China · 2 - [12CrNi3 Indicative](/materials/gb/12crni3 "GB 12CrNi3") - [20CrNi3A Indicative](/materials/gb/20crni3a "GB 20CrNi3A") GOST Russia / CIS · 12 - [12ChN3A Indicative](/materials/gost/12chn3a "GOST 12ChN3A") - [12ChN3A-sh Indicative](/materials/gost/12chn3a-sh "GOST 12ChN3A-sh") - [12HN3A Indicative](/materials/pn/12hn3a "GOST 12HN3A") - [12HN3A-sh Indicative](/materials/gost/12hn3a-sh "GOST 12HN3A-sh") - [12HN3A-sz Indicative](/materials/gost/12hn3a-sz "GOST 12HN3A-sz") - [12KH2N4А Indicative](/materials/gost/12kh2n4a "GOST 12KH2N4А") - [12KhN3A Indicative](/materials/gost/12khn3a "GOST 12KhN3A") - [12KhN3A-sh Indicative](/materials/gost/12khn3a-sh "GOST 12KhN3A-sh") - [12XH3A-ш Indicative](/materials/gost/12xh3a-sh "GOST 12XH3A-ш") - [12XН3А Indicative](/materials/gost/12xn3a "GOST 12XН3А") - [12Х2Н4А Indicative](/materials/gost/12kh2n4a "GOST 12Х2Н4А") - [20XH3A Indicative](/materials/gost/20xh3a "GOST 20XH3A") UNI Italy · 1 - [16 NiCr 11 Indicative](/materials/uni/16nicr11 "UNI 16 NiCr 11") ČSN Czechia · 1 - [16420 Indicative](/materials/csn/16420 "ČSN 16420") PN Poland · 2 - [12H2N4A Indicative](/materials/pn/12h2n4a "PN 12H2N4A") - [12HN3A Indicative](/materials/pn/12hn3a "PN 12HN3A") STN Slovakia · 1 - [16 420 Indicative](/materials/csn/16420 "STN 16 420") SRPS Serbia · 1 - [Č.5426 Indicative](/materials/srps/c-5426 "SRPS Č.5426") MSZ Hungary · 1 - [~BNC 2 Indicative](/materials/msz/bnc2 "MSZ ~BNC 2") BDS Bulgaria · 1 - [12Ch2N4A Indicative](/materials/bds/12ch2n4a "BDS 12Ch2N4A") 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 Cr Mn Iron — the balance, never listed by a standard — 94.8 % Ni — 3.3 % Cr — 0.8 % Mn — 0.6 % Traces & impurities · 0.6 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.14–0.2 | | Si | ≤ 0.4 | | Mn | 0.4–0.7 | | P | 0.025 | | S | 0.035 | | Cr | 0.6–0.9 | | Ni | 3–3.5 | 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 | 0,14-0,20 | 0.140 | 0.200 | Range | | Si | ≤0,40 | — | 0.400 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | 0,60-0,90 | 0.600 | 0.900 | Range | | Mn | 0,40-0,70 | 0.400 | 0.700 | Range | | Ni | 3,00-3,50 | 3.000 | 3.500 | 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 Transformation point Ac1 745 °C Exact Transformation point Ac3 800 °C Exact · Ac3(Acm) Transformation point Ar3 675 °C Exact · Ar3(Arcm) Transformation point Ar1 625 °C Exact Weldability weldable with restrictions As published: limited 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 7 conditions · 24 values By delivery state**Treated to improve shearability** source `steelnumber` | Delivery state | HB | |---|---| | Treated to improve shearability | 255 | By delivery state**Soft annealed** source `steelnumber` | Delivery state | HB | |---|---| | Soft annealed | 229 | By delivery state**Treated to hardness range** source `steelnumber` | Delivery state | HB | |---|---| | Treated to hardness range | 179 – 229 | By delivery state**Treated to ferrite-pearlite structure and hardness range** source `steelnumber` | Delivery state | HB | |---|---| | Treated to ferrite-pearlite structure and hardness range | 166 – 217 | By dimension**Quenching and drawing** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | KCU kJ/m² | |---|---|---|---|---|---| | Ø 15 | 1130 | 930 | 10 | 50 | 880 | By delivery state**no delivery state stated** source `splav` | Delivery state | HB | |---|---| | (annealing) , GOST 4543-71 | 269 | At temperature**no delivery state stated** source `splav` | Temperature °C | Density g/cm³ | Elastic modulus GPa | Thermal expansion coefficient 10^-6/K | Thermal conductivity W/(m·K) | |---|---|---|---|---| | 20 | 7.84 | 200 | — | — | | 100 | 7.82 | — | 11 | 25 | | 200 | — | — | 12 | — | | 300 | 7.76 | — | 13 | — | | 400 | 7.71 | — | 14.7 | 19 | | 500 | — | — | 15.3 | — | | 600 | 7.63 | — | 15.6 | — | 3 further values are held for this grade under a condition the source did not name — a bound with no quantity attached. They are withheld rather than shown against a guessed condition. 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 1.5, a shared category, and a published range for Ni / Cr 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. [1.5752 1.5752 Ni 3,00-3,50 · Cr 0,60-0,90 - ΔNi 0.00 - ΔCr 0.00 - 49 designations](/materials/material-no/1.5752 "1.5752") ## 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=c34ca995-e0f2-4a38-93b3-130eab5cf4aa&designation=a8f6477d-e8c8-4847-bca3-194762abc082 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/20nc11.pdf "Datasheet as PDF")