--- title: "LW 19 — Stainless steels" description: "LW 19 in BS: material number 1.4512, also listed as X2CrTi12. It is a material in the category Stainless steels. Designations recorded for this grade: 27." canonical: https://steelequivalents.com/materials/bs/lw-19 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/bs/lw-19.md cs: https://steelequivalents.com/cs/materiály/bs/lw-19.md de: https://steelequivalents.com/de/werkstoffe/bs/lw-19.md es: https://steelequivalents.com/es/materiales/bs/lw-19.md fr: https://steelequivalents.com/fr/matériaux/bs/lw-19.md hu: https://steelequivalents.com/hu/anyagok/bs/lw-19.md it: https://steelequivalents.com/it/materiali/bs/lw-19.md nl: https://steelequivalents.com/nl/materialen/bs/lw-19.md pl: https://steelequivalents.com/pl/materiały/bs/lw-19.md pt: https://steelequivalents.com/pt/materiais/bs/lw-19.md ru: https://steelequivalents.com/ru/материалы/bs/lw-19.md tr: https://steelequivalents.com/tr/malzemeler/bs/lw-19.md zh: https://steelequivalents.com/zh/材料/bs/lw-19.md ja: https://steelequivalents.com/ja/材料/bs/lw-19.md ar: https://steelequivalents.com/ar/المواد/bs/lw-19.md ko: https://steelequivalents.com/ko/재료/bs/lw-19.md pt-br: https://steelequivalents.com/pt-br/materiais/bs/lw-19.md hi: https://steelequivalents.com/hi/सामग्री/bs/lw-19.md content_hash: sha256:622d43997cf767cf41cbc979be7abb9c7c21ca1e7cc72bab5a3bb6e805a9e8a1 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/bs/lw-19 > Canonical URL: https://steelequivalents.com/materials/bs/lw-19 > 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. BS · United Kingdom · 27 designations # LW 19 LW 19 is a designation in BS for the material held under material number 1.4512, also listed as X2CrTi12. It is a material in the category Stainless steels. We list 27 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, ASTM, BS, AFNOR, UNE, ISO, JIS, UNI and ABNT NBR. - [*Material no.* **1.4512**](/materials/material-no/1.4512 "Material no.: 1.4512") - [*Category* **Stainless steels · 468 grades**](/categories/stainless-steels "Category: Stainless steels · 468 grades") - *Designations* **27** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=2bdd6459-7b15-4792-825f-db13a27b12c2&designation=7b426f6b-f527-4504-b331-76fb2fd6afe0 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/lw-19.pdf "Datasheet as PDF") ## If you came for one of these The most-used names for this grade. - [DIN / EN X2CrTi12 This grade’s own name · 2 grades on that route](/materials/din-en/x2crti12 "DIN / EN X2CrTi12") - [UNS S40900 This grade’s own name · 2 grades on that route](/materials/uns/s40900 "UNS S40900") - [AISI / SAE 409 This grade’s own name · 2 grades on that route](/materials/aisi-sae/409 "AISI / SAE 409") ## 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 27 designations · 11 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 - [X2CrTi12 This grade’s own name](/materials/din-en/x2crti12 "DIN / EN X2CrTi12") - [X6CrTi12 This grade’s own name Withdrawn](/materials/din-en/x6crti12 "DIN / EN X6CrTi12") UNS United States · 1 - [S40900 This grade’s own name](/materials/uns/s40900 "UNS S40900") AISI / SAE United States · 3 - [409 This grade’s own name](/materials/aisi-sae/409 "AISI / SAE 409") - [51409 Indicative](/materials/aisi-sae/51409 "AISI / SAE 51409") - [S40900 Indicative](/materials/uns/s40900 "AISI / SAE S40900") ASTM United States · 6 - [A1012 Indicative](/materials/astm/a1012 "ASTM A1012") - [A268 Indicative](/materials/astm/a268 "ASTM A268") - [A651 Indicative](/materials/astm/a651 "ASTM A651") - [A791 Indicative](/materials/astm/a791 "ASTM A791") - [A803 Indicative](/materials/astm/a803 "ASTM A803") - [TP409 Indicative](/materials/astm/tp409 "ASTM TP409") BS United Kingdom · 3 - [409S Indicative](/materials/bs/409s "BS 409S") - [409S19 Indicative](/materials/bs/409s19 "BS 409S19") - **LW 19 Indicative** AFNOR France · 2 - [Z3CT12 Indicative](/materials/afnor/z3ct12 "AFNOR Z3CT12") - [Z6CT12 Indicative](/materials/afnor/z6ct12 "AFNOR Z6CT12") UNE Spain · 1 - [F.3121 Indicative](/materials/une/f-3121 "UNE F.3121") ISO International · 1 - [X6CrTi12 Indicative](/materials/din-en/x6crti12 "ISO X6CrTi12") JIS Japan · 5 - [SUH 409 Indicative](/materials/jis/suh-409 "JIS SUH 409") - [SUH 409L Indicative](/materials/jis/suh409l "JIS SUH 409L") - [SUS 409LTB Indicative](/materials/jis/sus409ltb "JIS SUS 409LTB") - [SUS 409TB Indicative](/materials/jis/sus409tb "JIS SUS 409TB") - [SUS409L Indicative](/materials/jis/sus409l "JIS SUS409L") UNI Italy · 2 - [X2CrTi12 Indicative](/materials/din-en/x2crti12 "UNI X2CrTi12") - [X6CrTi12 Indicative](/materials/din-en/x6crti12 "UNI X6CrTi12") ABNT NBR Brazil · 1 - [409 Indicative](/materials/aisi-sae/409 "ABNT NBR 409") 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 Si Mn Iron — the balance, never listed by a standard — 86.4 % Cr — 11.5 % Si — 1 % Mn — 1 % Traces & impurities · 0.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | ≤ 0.03 | | Si | ≤ 1 | | Mn | ≤ 1 | | P | 0.04 | | S | 0.015 | | Cr | 10.5–12.5 | | Ti | 6x(C+N)≤0,65 | Carbon Silicon Manganese Phosphorus Sulfur Chromium Titanium 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 | ≤0,03 | — | 0.030 | Max | | Si | ≤1,00 | — | 1.000 | Max | | P | 0,04 | 0.040 | 0.040 | Exact | | S | 0,015 | 0.015 | 0.015 | Exact | | Ti | 6x(C+N)≤0,65 | — | 0.650 | No numeric bound | | Cr | 10,5-12,5 | 10.500 | 12.500 | Range | | Mn | ≤1,00 | — | 1.000 | Max | 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: Ni, Mo. ## Physical & mechanical properties Density 7,7 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. ## Properties by condition 1 conditions · 3 values By delivery state**no delivery state stated** source `steeljis` | Delivery state | Rm N/mm² | Re N/mm² | A% | |---|---|---|---| | Plate/Sheet | 360 | 175 | 22 | 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 / Si 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. [1.4003 1.4003 Cr 10,5-12,5 · Si ≤1,00 - ΔCr 0.00 - ΔSi 0.00 - 15 designations](/materials/material-no/1.4003 "1.4003")[X3CrNiCuTiNb12-9 1.4543 Cr 11,0-12,5 · Si ≤0,50 - ΔCr 0.25 - ΔSi 0.25 - 2 designations](/materials/din-en/x3crnicutinb12-9 "X3CrNiCuTiNb12-9")[1.4006 1.4006 Cr 11,5-13,5 · Si ≤1,00 - ΔCr 1.00 - ΔSi 0.00 - 145 designations](/materials/material-no/1.4006 "1.4006")[X13CrMo13 1.4119 Cr 11,0-14,0 · Si ≤0,60 - ΔCr 1.00 - ΔSi 0.20 - 2 designations](/materials/din-en/x13crmo13 "X13CrMo13")[GX7CrNiMo12-1 1.4008 Cr 12,0-13,5 · Si ≤1,00 - ΔCr 1.25 - ΔSi 0.00 - 7 designations](/materials/din-en/gx7crnimo12-1 "GX7CrNiMo12-1")[X29CrS13 1.4029 Cr 12,0-13,5 · Si ≤1,00 - ΔCr 1.25 - ΔSi 0.00 - 20 designations](/materials/din-en/x29crs13 "X29CrS13") ## 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=2bdd6459-7b15-4792-825f-db13a27b12c2&designation=7b426f6b-f527-4504-b331-76fb2fd6afe0 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/bs/lw-19.pdf "Datasheet as PDF")