--- title: "16NCD13 — Special steels for aviation and aerospace" description: "16NCD13 in AFNOR: material number 1.6657, also listed as 14NiCrMo13-4. It is a material in the category Special steels for aviation and aerospace." canonical: https://steelequivalents.com/materials/afnor/16ncd13 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/afnor/16ncd13.md cs: https://steelequivalents.com/cs/materiály/afnor/16ncd13.md de: https://steelequivalents.com/de/werkstoffe/afnor/16ncd13.md es: https://steelequivalents.com/es/materiales/afnor/16ncd13.md fr: https://steelequivalents.com/fr/matériaux/afnor/16ncd13.md hu: https://steelequivalents.com/hu/anyagok/afnor/16ncd13.md it: https://steelequivalents.com/it/materiali/afnor/16ncd13.md nl: https://steelequivalents.com/nl/materialen/afnor/16ncd13.md pl: https://steelequivalents.com/pl/materiały/afnor/16ncd13.md pt: https://steelequivalents.com/pt/materiais/afnor/16ncd13.md ru: https://steelequivalents.com/ru/материалы/afnor/16ncd13.md tr: https://steelequivalents.com/tr/malzemeler/afnor/16ncd13.md zh: https://steelequivalents.com/zh/材料/afnor/16ncd13.md ja: https://steelequivalents.com/ja/材料/afnor/16ncd13.md ar: https://steelequivalents.com/ar/المواد/afnor/16ncd13.md ko: https://steelequivalents.com/ko/재료/afnor/16ncd13.md pt-br: https://steelequivalents.com/pt-br/materiais/afnor/16ncd13.md hi: https://steelequivalents.com/hi/सामग्री/afnor/16ncd13.md content_hash: sha256:aaae06f76981f29d8dba3fb34638a74a982ab199ba3738213b589ab8a26739cf 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/16ncd13 > Canonical URL: https://steelequivalents.com/materials/afnor/16ncd13 > 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 · 40 designations # 16NCD13 16NCD13 is a designation in AFNOR for the material held under material number 1.6657, also listed as 14NiCrMo13-4. It is a material in the category Special steels for aviation and aerospace. We list 40 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, SAE AMS, JIS, GOST, UNI, ČSN, PN, MSZ, BDS and ÖNORM. - [*Material no.* **1.6657**](/materials/material-no/1.6657 "Material no.: 1.6657") - [*Category* **Special steels for aviation and aerospace · 39 grades**](/categories/special-steels-for-aviation-and-aerospace "Category: Special steels for aviation and aerospace · 39 grades") - *Designations* **40** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=8907a2a2-54a0-43e8-9710-31b3952ef011&designation=f9ad73d0-c52a-4c21-afe1-f5b2efac1d07 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/16ncd13.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN 14NiCrMo13-4 This grade’s own name](/materials/din-en/14nicrmo13-4 "DIN / EN 14NiCrMo13-4") - [UNS H93100 This grade’s own name](/materials/uns/h93100 "UNS H93100") - [AISI / SAE 9310H This grade’s own name](/materials/aisi-sae/9310h "AISI / SAE 9310H") ## About Special steels for aviation and aerospace Special steels for aviation and aerospace are engineered steels designed to provide controlled mechanical properties and reliable performance in demanding service. Their alloying and heat-treatment capabilities support components that require a combination of strength, toughness and fatigue resistance, including aircraft structures and engine parts. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 40 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 · 2 - [1.6657 Indicative](/materials/material-no/1.6657 "DIN / EN 1.6657") - [14NiCrMo13-4 This grade’s own name](/materials/din-en/14nicrmo13-4 "DIN / EN 14NiCrMo13-4") UNS United States · 3 - [G93106 Indicative](/materials/uns/g93106 "UNS G93106") - [H93100 This grade’s own name](/materials/uns/h93100 "UNS H93100") - [H93106 This grade’s own name](/materials/uns/h93106 "UNS H93106") AISI / SAE United States · 6 - [9310 Indicative](/materials/aisi-sae/9310 "AISI / SAE 9310") - [9310H This grade’s own name](/materials/aisi-sae/9310h "AISI / SAE 9310H") - [9310RH This grade’s own name](/materials/aisi-sae/9310rh "AISI / SAE 9310RH") - [E9310 Indicative](/materials/aisi-sae/e9310 "AISI / SAE E9310") - [E9310H This grade’s own name](/materials/aisi-sae/e9310h "AISI / SAE E9310H") - [EX1 This grade’s own name](/materials/aisi-sae/ex1 "AISI / SAE EX1") ASTM United States · 1 - [A322 Indicative](/materials/astm/a322 "ASTM A322") BS United Kingdom · 6 - [36C Indicative](/materials/bs/36c "BS 36C") - [832H13 Indicative](/materials/bs/832h13 "BS 832H13") - [832M13 Indicative](/materials/bs/832m13 "BS 832M13") - [835M15 Indicative](/materials/bs/835m15 "BS 835M15") - [EN36C Indicative](/materials/bs/en36c "BS EN36C") - [S157 Indicative](/materials/bs/s157 "BS S157") AFNOR France · 2 - **16NCD13 Indicative** - [16NiCrMo13 Indicative](/materials/afnor/16nicrmo13 "AFNOR 16NiCrMo13") UNE Spain · 4 - [131 Indicative](/materials/une/131 "UNE 131") - [14NiCrMo131 Indicative](/materials/une/14nicrmo131 "UNE 14NiCrMo131") - [F.1569 Indicative](/materials/une/f-1569 "UNE F.1569") - [F.1569-14NiCrMo Indicative](/materials/une/f-1569-14nicrmo "UNE F.1569-14NiCrMo") SAE AMS United States / Aerospace · 3 - [6260 Indicative](/materials/ams/6260 "SAE AMS 6260") - [6265 Indicative](/materials/ams/6265 "SAE AMS 6265") - [6267 Indicative](/materials/ams/6267 "SAE AMS 6267") JIS Japan · 1 - [SNCM815 Indicative](/materials/jis/sncm815 "JIS SNCM815") GOST Russia / CIS · 5 - [14ChN3M Indicative](/materials/gost/14chn3m "GOST 14ChN3M") - [14HN3M Indicative](/materials/gost/14hn3m "GOST 14HN3M") - [14KhN3M Indicative](/materials/gost/14khn3m "GOST 14KhN3M") - [18KH2N4MА Indicative](/materials/gost/18kh2n4ma "GOST 18KH2N4MА") - [18Х2Н4МА Indicative](/materials/gost/18kh2n4ma "GOST 18Х2Н4МА") UNI Italy · 2 - [15NiCrMo13 Indicative](/materials/uni/15nicrmo13 "UNI 15NiCrMo13") - [16NiCrMo12 Indicative](/materials/uni/16nicrmo12 "UNI 16NiCrMo12") ČSN Czechia · 1 - [16720 Indicative](/materials/csn/16720 "ČSN 16720") PN Poland · 1 - [18H2N4WA Indicative](/materials/pn/18h2n4wa "PN 18H2N4WA") MSZ Hungary · 1 - [~BNCMo 2 Indicative](/materials/msz/bncmo-2 "MSZ ~BNCMo 2") BDS Bulgaria · 1 - [18Ch2N4MA Indicative](/materials/bds/18ch2n4ma "BDS 18Ch2N4MA") ÖNORM Austria · 1 - [BOHLERM130 Indicative](/materials/onorm/bohlerm130 "ÖNORM BOHLERM130") 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 Ni Cr Mn Iron — the balance, never listed by a standard — 94.5 % Ni — 3.3 % Cr — 1 % Mn — 0.4 % Traces & impurities · 0.8 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.11–0.17 | | Si | ≤ 0.4 | | Mn | 0.3–0.6 | | P | 0.025 | | S | 0.035 | | Cr | 0.8–1.1 | | Mo | 0.2–0.3 | | Ni | 3–3.5 | 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 | 0,11-0,17 | 0.110 | 0.170 | Range | | Si | ≤0,40 | — | 0.400 | Max | | P | 0,025 | 0.025 | 0.025 | Exact | | S | 0,035 | 0.035 | 0.035 | Exact | | Cr | 0,80-1,10 | 0.800 | 1.100 | Range | | Mn | 0,30-0,60 | 0.300 | 0.600 | Range | | Ni | 3,00-3,50 | 3.000 | 3.500 | Range | | Mo | 0,20-0,30 | 0.200 | 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 This grade's composition falls outside the published model's validated range (a low-alloy composition window), so no transformation temperature is predicted here. ## Physical & mechanical properties Density 7,85 g/cm³ Exact Transformation point Ac1 700 °C Exact Transformation point Ac3 810 °C Exact · Ac3(Acm) Transformation point Ar3 400 °C Exact · Ar3(Arcm) Transformation point Ar1 350 °C Exact Weldability difficult to weld As published: hard weldability. Flake sensitivity susceptible As published: predisposed Temper brittleness not susceptible As published: not 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 8 conditions · 36 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 | 241 | By delivery state**Treated to hardness range** source `steelnumber` | Delivery state | HB | |---|---| | Treated to hardness range | 187 – 241 | 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 | 835 | 12 | 50 | 980 | 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 | 7.95 | 200 | — | — | | 100 | 7.93 | 165 | 11.7 | 36 | | 200 | 7.9 | 141 | 12.2 | 36 | | 300 | 7.86 | — | 12.7 | 35 | | 400 | 7.83 | 139 | 13.1 | 35 | | 500 | 7.8 | — | 13.5 | 34 | | 600 | 7.76 | — | 13.9 | 33 | | 700 | — | — | — | 32 | | 800 | — | — | — | 30 | At temperature**no delivery state stated** source `steelnumber` | Temperature °C | Rm N/mm² | |---|---| | 200 | 1200 | 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. ## Heat treatment Supply condition - Soft annealing Steel product Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied. Source: [www.caishuku.com](https://www.caishuku.com/detail/azhlNWIxMTk5MzA_ "Source: www.caishuku.com") ## 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 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. [G93150 1.6658 Ni 3,00-3,50 · Cr 0,80-1,10 - ΔNi 0.00 - ΔCr 0.00 - 2 designations](/materials/uns/g93150 "G93150") ## 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=8907a2a2-54a0-43e8-9710-31b3952ef011&designation=f9ad73d0-c52a-4c21-afe1-f5b2efac1d07 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/afnor/16ncd13.pdf "Datasheet as PDF")