--- title: "2Х18Н9 — Stainless steels" description: "2Х18Н9 in GOST: material number 1.4300, also listed as X 12 CrNi 18 8. Category: Stainless steels. Designations recorded for this grade: 76." canonical: https://steelequivalents.com/materials/gost/2kh18n9 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/gost/2kh18n9.md cs: https://steelequivalents.com/cs/materiály/gost/2kh18n9.md de: https://steelequivalents.com/de/werkstoffe/gost/2kh18n9.md es: https://steelequivalents.com/es/materiales/gost/2kh18n9.md fr: https://steelequivalents.com/fr/matériaux/gost/2kh18n9.md hu: https://steelequivalents.com/hu/anyagok/gost/2kh18n9.md it: https://steelequivalents.com/it/materiali/gost/2kh18n9.md nl: https://steelequivalents.com/nl/materialen/gost/2kh18n9.md pl: https://steelequivalents.com/pl/materiały/gost/2kh18n9.md pt: https://steelequivalents.com/pt/materiais/gost/2kh18n9.md ru: https://steelequivalents.com/ru/материалы/gost/2х18н9.md tr: https://steelequivalents.com/tr/malzemeler/gost/2kh18n9.md zh: https://steelequivalents.com/zh/材料/gost/2kh18n9.md ja: https://steelequivalents.com/ja/材料/gost/2kh18n9.md ar: https://steelequivalents.com/ar/المواد/gost/2kh18n9.md ko: https://steelequivalents.com/ko/재료/gost/2kh18n9.md pt-br: https://steelequivalents.com/pt-br/materiais/gost/2kh18n9.md hi: https://steelequivalents.com/hi/सामग्री/gost/2kh18n9.md content_hash: sha256:9397d171faf92469da513961d6c88bc9dbfd3ec9f2e5cb27192a536bb5f6193d 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/2kh18n9 > Canonical URL: https://steelequivalents.com/materials/gost/2kh18n9 > 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 · 76 designations # 2Х18Н9 2Х18Н9 is a designation in GOST for the material held under material number 1.4300, also listed as X 12 CrNi 18 8. It is a material in the category Stainless steels. We list 76 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, SAE AMS, JIS, GB, GOST, UNI, SS, ČSN, PN and ABNT NBR. - [*Material no.* **1.4300**](/materials/material-no/1.4300 "Material no.: 1.4300") - [*Category* **Stainless steels · 468 grades**](/categories/stainless-steels "Category: Stainless steels · 468 grades") - *Designations* **76** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=6449c2d9-f361-40d5-a425-88fc13436d3f&designation=ad1c9630-85fc-4cc7-bc64-796a56f98d16 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/2kh18n9.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [UNS S30200 This grade’s own name · 4 grades on that route](/materials/uns/s30200 "UNS S30200") - [AISI / SAE 302 This grade’s own name · 5 grades on that route](/materials/aisi-sae/302 "AISI / SAE 302") ## About Stainless steels Stainless steels are corrosion-resistant alloy steels whose chromium content promotes a protective passive surface film. They are used for equipment, structures and components exposed to moisture, chemicals or hygienic service, with different alloy compositions selected for corrosion resistance, strength, formability or weldability. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 76 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 · 1 - [X 12 CrNi 18 8 This grade’s own name Withdrawn](/materials/din-en/x-12-crni-18-8 "DIN / EN X 12 CrNi 18 8") UNS United States · 2 - [S30200 This grade’s own name](/materials/uns/s30200 "UNS S30200") - [S30302 Indicative](/materials/uns/s30302 "UNS S30302") AISI / SAE United States · 6 - [301 Indicative](/materials/aisi-sae/301 "AISI / SAE 301") - [302 This grade’s own name](/materials/aisi-sae/302 "AISI / SAE 302") - [303 Indicative](/materials/aisi-sae/303 "AISI / SAE 303") - [30302 Indicative](/materials/aisi-sae/30302 "AISI / SAE 30302") - [Gr.302 Indicative](/materials/aisi-sae/gr-302 "AISI / SAE Gr.302") - [S30200 Indicative](/materials/uns/s30200 "AISI / SAE S30200") ASTM United States · 20 - [A240 Indicative](/materials/astm/a240 "ASTM A240") - [A264 Indicative](/materials/astm/a264 "ASTM A264") - [A276 Indicative](/materials/astm/a276 "ASTM A276") - [A313 Indicative](/materials/astm/a313 "ASTM A313") - [A314 Indicative](/materials/astm/a314 "ASTM A314") - [A368 Indicative](/materials/astm/a368 "ASTM A368") - [A473 Indicative](/materials/astm/a473 "ASTM A473") - [A478 Indicative](/materials/astm/a478 "ASTM A478") - [A479 Indicative](/materials/astm/a479 "ASTM A479") - [A480 Indicative](/materials/astm/a480 "ASTM A480") - [A492 Indicative](/materials/astm/a492 "ASTM A492") - [A493 Indicative](/materials/astm/a493 "ASTM A493") - [A511 Indicative](/materials/astm/a511 "ASTM A511") - [A554 Indicative](/materials/astm/a554 "ASTM A554") - [A580 Indicative](/materials/astm/a580 "ASTM A580") - [A666 Indicative](/materials/astm/a666 "ASTM A666") - [F1669 Indicative](/materials/astm/f1669 "ASTM F1669") - [F2215 Indicative](/materials/astm/f2215 "ASTM F2215") - [F599 Indicative](/materials/astm/f599 "ASTM F599") - [F899 Indicative](/materials/astm/f899 "ASTM F899") BS United Kingdom · 3 - [302S25 Indicative](/materials/bs/302s25 "BS 302S25") - [302S26 Indicative](/materials/bs/302s26 "BS 302S26") - [304S21 Indicative](/materials/bs/304s21 "BS 304S21") AFNOR France · 4 - [Z10CN18-09 Indicative](/materials/afnor/z10cn18-09 "AFNOR Z10CN18-09") - [Z10CNF18-09 Indicative](/materials/afnor/z10cnf18-09 "AFNOR Z10CNF18-09") - [Z12CN17-07 Indicative](/materials/afnor/z12cn17-07 "AFNOR Z12CN17-07") - [Z6CN18-09 Indicative](/materials/afnor/z6cn18-09 "AFNOR Z6CN18-09") UNE Spain · 4 - [F.3507 Indicative](/materials/une/f-3507 "UNE F.3507") - [F.3508 Indicative](/materials/une/f-3508 "UNE F.3508") - [F.3517 Indicative](/materials/une/f-3517 "UNE F.3517") - [X10CrNi18-09 Indicative](/materials/uni/x10crni18-09 "UNE X10CrNi18-09") SAE AMS United States / Aerospace · 16 - [5358 Indicative](/materials/ams/5358 "SAE AMS 5358") - [5500 Indicative sheet](/materials/ams/5500 "SAE AMS 5500") - [5515 Indicative sheet strip](/materials/ams/5515 "SAE AMS 5515") - [5516 Indicative plate sheet strip](/materials/ams/5516 "SAE AMS 5516") - [5600 Indicative sheet](/materials/ams/5600 "SAE AMS 5600") - [5636 Indicative bar](/materials/ams/5636 "SAE AMS 5636") - [5637 Indicative bar](/materials/ams/5637 "SAE AMS 5637") - [5688 Indicative](/materials/ams/5688 "SAE AMS 5688") - [5693 Indicative](/materials/ams/5693 "SAE AMS 5693") - [5866 Indicative](/materials/ams/5866 "SAE AMS 5866") - [5903 Indicative](/materials/ams/5903 "SAE AMS 5903") - [5904 Indicative](/materials/ams/5904 "SAE AMS 5904") - [5905 Indicative](/materials/ams/5905 "SAE AMS 5905") - [5906 Indicative](/materials/ams/5906 "SAE AMS 5906") - [6693 Indicative](/materials/ams/6693 "SAE AMS 6693") - [7241 Indicative](/materials/ams/7241 "SAE AMS 7241") JIS Japan · 2 - [STC52C Indicative](/materials/jis/stc52c "JIS STC52C") - [SUS 302 Indicative](/materials/jis/sus302 "JIS SUS 302") GB China · 1 - [1Cr18Ni9 Indicative](/materials/gb/1cr18ni9 "GB 1Cr18Ni9") GOST Russia / CIS · 9 - [08Ch18N10 Indicative](/materials/gost/08ch18n10 "GOST 08Ch18N10") - [12KH18N9 Indicative](/materials/gost/12kh18n9 "GOST 12KH18N9") - [12Х18Н9 Indicative](/materials/gost/12kh18n9 "GOST 12Х18Н9") - [17KH18N9 Indicative](/materials/gost/17kh18n9 "GOST 17KH18N9") - [17Х18Н9 Indicative](/materials/gost/17kh18n9 "GOST 17Х18Н9") - **2Х18Н9 Indicative** - [PKh18N9T Indicative](/materials/gost/pkh18n9t "GOST PKh18N9T") - [PRKh18N9 Indicative](/materials/gost/prkh18n9 "GOST PRKh18N9") - [Х18Н9 Indicative](/materials/gost/kh18n9 "GOST Х18Н9") UNI Italy · 3 - [X10CrNi18-09 Indicative](/materials/uni/x10crni18-09 "UNI X10CrNi18-09") - [X10CrNi18-10 Indicative](/materials/uni/x10crni18-10 "UNI X10CrNi18-10") - [X15CrNi18-09 Indicative](/materials/uni/x15crni18-09 "UNI X15CrNi18-09") SS Sweden · 1 - [2331 Indicative](/materials/ss/2331 "SS 2331") ČSN Czechia · 2 - [17 242 Indicative](/materials/csn/17242 "ČSN 17 242") - [17241 Indicative](/materials/csn/17241 "ČSN 17241") PN Poland · 1 - [1H18N9 Indicative](/materials/pn/1h18n9 "PN 1H18N9") ABNT NBR Brazil · 1 - [302 Indicative](/materials/aisi-sae/302 "ABNT NBR 302") 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 Cr Ni Mn Iron — the balance, never listed by a standard — 69.8 % Cr — 18 % Ni — 9 % Mn — 2 % Traces & impurities · 1.2 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.12 | | Si | ≤ 1 | | Mn | ≤ 2 | | P | 0.045 | | S | 0.03 | | Cr | 17–19 | | Ni | 8–10 | 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 | ≤0,12 | — | 0.120 | Max | | Si | ≤1,00 | — | 1.000 | Max | | P | 0,045 | 0.045 | 0.045 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | Cr | 17,0-19,0 | 17.000 | 19.000 | Range | | Mn | ≤2,00 | — | 2.000 | Max | | Ni | 8,00-10,0 | 8.000 | 10.000 | 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 Weldability readily weldable As published: without limitations. 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 · 73 values By delivery state**no delivery state stated** source `splav` | Delivery state | Rm N/mm² | Re N/mm² | A5% | Z% | HB | |---|---|---|---|---|---| | Pipe cooling strain, GOST 9941-81 | 549 | — | 37 | — | — | | Pipe hot strain, GOST 9940-81 | 529 | — | 40 | — | — | | Bar cold-worked , GOST 18907-73 | 880 – 930 | — | — | — | — | | Bar, GOST 18907-73 | 640 – 880 | — | 20 | — | — | | Forging, GOST 25054-81 | 490 | 196 | 35 – 40 | 40 – 48 | — | | Sheet thin cold-worked , GOST 5582-75 | 930 – 1230 | — | 13 | — | — | | Sheet thin cold-worked , GOST 4986-79 | 980 | — | 3 – 5 | — | — | | 12KH18N9 ( 12Х18Н9 ) , Forging GOST 25054-81 | — | — | — | — | 179 | By delivery state**no delivery state stated** source `steeljis` | Delivery state | Rm N/mm² | Re N/mm² | A% | Z% | |---|---|---|---|---| | Bars/Rods | 520 | 205 | 40 | 60 | By dimension**Quenching 1050 - 1100°C,Cooling air** source `splav` | Dimension mm | Rm N/mm² | Re N/mm² | A5% | Z% | |---|---|---|---|---| | Ø 60 | 490 | 196 | 45 | 55 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | Re N/mm² | A5% | |---|---|---|---| | Sheet trick, GOST 7350-77 | 530 | 215 | 38 | By heat-treated condition**no delivery state stated** source `splav` | Heat-treated condition | Rm N/mm² | Re N/mm² | A5% | |---|---|---|---| | Sheet thin, GOST 5582-75 | 540 | 195 | 38 | 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) | Specific heat capacity J/(kg·K) | Electrical resistivity nΩ·m | |---|---|---|---|---|---|---| | 20 | 7.9 | 205 | — | 15 | — | 725 | | 100 | 7.86 | 202 | 16.6 | 16.3 | 504 | 792 | | 200 | 7.82 | 197 | 17 | 17.5 | — | 860 | | 300 | 7.78 | 190 | 17.2 | 18.8 | — | 920 | | 400 | 7.74 | 181 | 17.5 | 21.3 | — | 976 | | 500 | 7.69 | 173 | 17.9 | 23 | — | 1028 | | 600 | 7.65 | 160 | 18.2 | 26.8 | — | 1070 | | 700 | 7.6 | 150 | 18.6 | 25.9 | — | 1117 | | 800 | 7.56 | — | 18.9 | — | — | — | | 900 | — | — | 19.3 | — | — | — | 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 1.4, 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. [1.4305 1.4305 Cr 17,0-19,0 · Ni 8,00-10,0 - ΔCr 0.00 - ΔNi 0.00 - 77 designations](/materials/material-no/1.4305 "1.4305")[X9CrNi18-9 1.4325 Cr 17,0-19,0 · Ni 8,00-10,0 - ΔCr 0.00 - ΔNi 0.00 - 51 designations](/materials/din-en/x9crni18-9 "X9CrNi18-9")[X3CrNiCu18-9-4 1.4567 Cr 17,0-19,0 · Ni 8,50-10,5 - ΔCr 0.00 - ΔNi 0.50 - 16 designations](/materials/din-en/x3crnicu18-9-4 "X3CrNiCu18-9-4")[1.4301 1.4301 Cr 17,5-19,5 · Ni 8,00-10,5 - ΔCr 0.50 - ΔNi 0.25 - 170 designations](/materials/material-no/1.4301 "1.4301")[1.4307 1.4307 Cr 17,5-19,5 · Ni 8,00-10,5 - ΔCr 0.50 - ΔNi 0.25 - 88 designations](/materials/material-no/1.4307 "1.4307")[X15CrNiMn18-8 1.4370 Cr 17,2-19,8 · Ni 7,60-9,40 - ΔCr 0.50 - ΔNi 0.50 - 1 designations](/materials/din-en/x15crnimn18-8 "X15CrNiMn18-8") ## 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=6449c2d9-f361-40d5-a425-88fc13436d3f&designation=ad1c9630-85fc-4cc7-bc64-796a56f98d16 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/gost/2kh18n9.pdf "Datasheet as PDF")