--- title: "A 693 — 9 equivalent grades, compared" description: "The designation A 693 is carried by 9 different grades. Compare them on the elements that actually differ, then open the one your print means." canonical: https://steelequivalents.com/materials/astm/a693 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/astm/a693.md cs: https://steelequivalents.com/cs/materiály/astm/a693.md de: https://steelequivalents.com/de/werkstoffe/astm/a693.md es: https://steelequivalents.com/es/materiales/astm/a693.md fr: https://steelequivalents.com/fr/matériaux/astm/a693.md hu: https://steelequivalents.com/hu/anyagok/astm/a693.md it: https://steelequivalents.com/it/materiali/astm/a693.md nl: https://steelequivalents.com/nl/materialen/astm/a693.md pl: https://steelequivalents.com/pl/materiały/astm/a693.md pt: https://steelequivalents.com/pt/materiais/astm/a693.md ru: https://steelequivalents.com/ru/материалы/astm/a693.md tr: https://steelequivalents.com/tr/malzemeler/astm/a693.md zh: https://steelequivalents.com/zh/材料/astm/a693.md ja: https://steelequivalents.com/ja/材料/astm/a693.md ar: https://steelequivalents.com/ar/المواد/astm/a693.md ko: https://steelequivalents.com/ko/재료/astm/a693.md pt-br: https://steelequivalents.com/pt-br/materiais/astm/a693.md hi: https://steelequivalents.com/hi/सामग्री/astm/a693.md content_hash: sha256:41f6c8bde9733b7013cdfabb46aaaf1c7ee1b66ca6e90a2092203598947c3da6 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/astm/a693 > Canonical URL: https://steelequivalents.com/materials/astm/a693 > 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. ASTM · United States · 9 grades # A 693 The designation A 693 is carried by 9 different grades. Compare them on the elements that actually differ, then open the one your print means. - *Matching grades* **9** - [*Category* **Others · 1754 grades**](/categories/others "Category: Others · 1754 grades") - [*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") - [*Category* **Stainless steels · 468 grades**](/categories/stainless-steels "Category: Stainless steels · 468 grades") [Search](/search "Steel grade search")[Inquiry](/inquiry "Inquiry") ## Which of the 9 do you want? This name is carried by several grades. The elements shown are the ones whose values actually differ across the set — the ones that decide the question. Values are the source text verbatim; an em dash means no value on file for that element on that grade, not zero. | Grade | Material no. | Category | Designations | Cr% | Ni% | C% | Al% | Si% | P% | |---|---|---|---|---|---|---|---|---|---| | [1.4504](/materials/material-no/1.4504 "1.4504") | [1.4504](/materials/material-no/1.4504 "1.4504") 1.4 | [Others](/categories/others "Others") | 17 | 16,0-17,25 | 6,50-7,75 | ≤0,09 | 0,75-1,25 | ≤0,50 | 0,025 | | [X3CrNiMoAl13-8-2](/materials/din-en/x3crnimoal13-8-2 "X3CrNiMoAl13-8-2") | [1.4534](/materials/material-no/1.4534 "1.4534") 1.4 | [Special steels for aviation and aerospace](/categories/special-steels-for-aviation-and-aerospace "Special steels for aviation and aerospace") | 15 | 12,25-13,25 | 7,50-8,50 | ≤0,05 | 0,80-1,35 | ≤0,10 | 0,01 | | [X4CrNiCuNb16-4](/materials/din-en/x4crnicunb16-4 "X4CrNiCuNb16-4") | [1.4540](/materials/material-no/1.4540 "1.4540") 1.4 | [Others](/categories/others "Others") | 26 | 15,0-17,0 | 3,50-5,00 | ≤0,06 | — | ≤1,00 | — | | [1.4542](/materials/material-no/1.4542 "1.4542") | [1.4542](/materials/material-no/1.4542 "1.4542") 1.4 | [Stainless steels](/categories/stainless-steels "Stainless steels") | 48 | 15,0-17,0 | 3,00-5,00 | ≤0,07 | — | ≤0,70 | 0,04 | | [X5CrNiCu15-5](/materials/din-en/x5crnicu15-5 "X5CrNiCu15-5") | [1.4545](/materials/material-no/1.4545 "1.4545") 1.4 | [Special steels for aviation and aerospace](/categories/special-steels-for-aviation-and-aerospace "Special steels for aviation and aerospace") | 12 | 15,0-15,5 | 3,00-5,50 | ≤0,07 | — | ≤1,00 | 0,03 | | [X5CrNiCuNb17-4-4](/materials/din-en/x5crnicunb17-4-4 "X5CrNiCuNb17-4-4") | [1.4548](/materials/material-no/1.4548 "1.4548") 1.4 | [Special steels for aviation and aerospace](/categories/special-steels-for-aviation-and-aerospace "Special steels for aviation and aerospace") | 21 | 15,0-17,5 | 3,00-5,00 | ≤0,07 | — | ≤1,00 | 0,025 | | [S17700](/materials/uns/s17700 "S17700") | [1.4564](/materials/material-no/1.4564 "1.4564") 1.4 | [Special steels for aviation and aerospace](/categories/special-steels-for-aviation-and-aerospace "Special steels for aviation and aerospace") | 15 | 16,0-18,0 | 6,50-7,75 | ≤0,09 | 0,75-1,50 | ≤1,00 | 0,04 | | [1.4568](/materials/material-no/1.4568 "1.4568") | [1.4568](/materials/material-no/1.4568 "1.4568") 1.4 | [Stainless steels](/categories/stainless-steels "Stainless steels") | 42 | 16,0-18,0 | 6,50-7,80 | ≤0,09 | 0,70-1,50 | ≤0,70 | 0,04 | | [S46500](/materials/uns/s46500 "S46500") | — | | 5 | — | — | — | — | — | — | ## Not sure which one your print means? 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 "Inquiry")