--- title: "1.4984 — High-temperature steels / aviation variant" description: "1.4984 is the material number of the grade also listed as S31600. It is a material in the category High-temperature steels / aviation variant." canonical: https://steelequivalents.com/materials/material-no/1.4984 language: en robots: index, follow og_type: website type: material-detail language_alternates: en: https://steelequivalents.com/materials/material-no/1.4984.md cs: https://steelequivalents.com/cs/materiály/číslo-materiálu/1.4984.md de: https://steelequivalents.com/de/werkstoffe/werkstoff-nr/1.4984.md es: https://steelequivalents.com/es/materiales/número-de-material/1.4984.md fr: https://steelequivalents.com/fr/matériaux/numéro-de-matériau/1.4984.md hu: https://steelequivalents.com/hu/anyagok/anyagszám/1.4984.md it: https://steelequivalents.com/it/materiali/numero-materiale/1.4984.md nl: https://steelequivalents.com/nl/materialen/materiaalnummer/1.4984.md pl: https://steelequivalents.com/pl/materiały/numer-materiału/1.4984.md pt: https://steelequivalents.com/pt/materiais/número-do-material/1.4984.md ru: https://steelequivalents.com/ru/материалы/номер-материала/1.4984.md tr: https://steelequivalents.com/tr/malzemeler/malzeme-numarası/1.4984.md zh: https://steelequivalents.com/zh/材料/材料编号/1.4984.md ja: https://steelequivalents.com/ja/材料/材料番号/1.4984.md ar: https://steelequivalents.com/ar/المواد/رقم-المادة/1.4984.md ko: https://steelequivalents.com/ko/재료/재료번호/1.4984.md pt-br: https://steelequivalents.com/pt-br/materiais/número-do-material/1.4984.md hi: https://steelequivalents.com/hi/सामग्री/सामग्री-संख्या/1.4984.md content_hash: sha256:20631c1f1fccc6c56013a7660a23cd84eead53aeca729a1f203bc3f7ca322d74 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/material-no/1.4984 > Canonical URL: https://steelequivalents.com/materials/material-no/1.4984 > 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. Material number · Europe · 64 designations # 1.4984 1.4984 is the material number of the grade also listed as S31600. It is a material in the category High-temperature steels / aviation variant. We list 64 designations recorded for this grade, in the standards UNS, AISI / SAE, ASTM, SAE AMS and ABNT NBR. - ***Material no.* **1.4984**** - [*Category* **High-temperature steels / aviation variant · 12 grades**](/categories/high-temperature-steels-aviation-variant "Category: High-temperature steels / aviation variant · 12 grades") - *Designations* **64** [Search](/search "Steel grade search")[Inquiry](/inquiry?material=d2e631b4-b322-4267-a235-5e63954aa481 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4984.pdf "Datasheet as PDF") ## About High-temperature steels / aviation variant High-temperature aviation steels are heat-resistant materials designed to retain strength and structural stability during prolonged exposure to elevated temperatures. Their alloying provides resistance to creep, oxidation, and thermal degradation, making them suitable for aircraft engine and other hot-section components. This describes the material class as a whole. Always confirm the individual grade against the standard before ordering. ## Also known as 64 designations · 5 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. UNS United States · 2 - [S31600 Indicative](/materials/uns/s31600 "UNS S31600") - [S31603 Indicative](/materials/uns/s31603 "UNS S31603") AISI / SAE United States · 2 - [30316 Indicative](/materials/aisi-sae/30316 "AISI / SAE 30316") - [316 Indicative](/materials/aisi-sae/316 "AISI / SAE 316") ASTM United States · 52 - [A 167 Indicative](/materials/astm/a167 "ASTM A 167") - [A 479 Indicative](/materials/astm/a479 "ASTM A 479") - [A1012 Indicative](/materials/astm/a1012 "ASTM A1012") - [A1022 Indicative](/materials/astm/a1022 "ASTM A1022") - [A1049 Indicative](/materials/astm/a1049 "ASTM A1049") - [A182 Indicative](/materials/aisi-sae/a182 "ASTM A182") - [A193 Indicative](/materials/astm/a193 "ASTM A193") - [A194 Indicative](/materials/astm/a194 "ASTM A194") - [A213 Indicative](/materials/astm/a213 "ASTM A213") - [A240 Indicative](/materials/astm/a240 "ASTM A240") - [A249 Indicative](/materials/astm/a249 "ASTM A249") - [A264 Indicative](/materials/astm/a264 "ASTM A264") - [A269 Indicative](/materials/astm/a269 "ASTM A269") - [A270 Indicative](/materials/astm/a270 "ASTM A270") - [A271 Indicative](/materials/astm/a271 "ASTM A271") - [A276 Indicative](/materials/astm/a276 "ASTM A276") - [A312 Indicative](/materials/astm/a312 "ASTM A312") - [A313 Indicative](/materials/astm/a313 "ASTM A313") - [A314 Indicative](/materials/astm/a314 "ASTM A314") - [A320 Indicative](/materials/nbn/a320 "ASTM A320") - [A336 Indicative](/materials/astm/a336 "ASTM A336") - [A358 Indicative](/materials/astm/a358 "ASTM A358") - [A368 Indicative](/materials/astm/a368 "ASTM A368") - [A376 Indicative](/materials/astm/a376 "ASTM A376") - [A403 Indicative](/materials/astm/a403 "ASTM A403") - [A409 Indicative](/materials/astm/a409 "ASTM A409") - [A430 Indicative](/materials/astm/a430 "ASTM A430") - [A580 Indicative](/materials/astm/a580 "ASTM A580") - [A632 Indicative](/materials/astm/a632 "ASTM A632") - [A666 Indicative](/materials/astm/a666 "ASTM A666") - [A688 Indicative](/materials/astm/a688 "ASTM A688") - [A793 Indicative](/materials/astm/a793 "ASTM A793") - [A813 Indicative](/materials/astm/a813 "ASTM A813") - [A814 Indicative](/materials/astm/a814 "ASTM A814") - [A826 Indicative](/materials/astm/a826 "ASTM A826") - [A831 Indicative](/materials/astm/a831 "ASTM A831") - [A943 Indicative](/materials/astm/a943 "ASTM A943") - [A965 Indicative](/materials/astm/a965 "ASTM A965") - [A988 Indicative](/materials/astm/a988 "ASTM A988") - [F 138 Indicative](/materials/astm/f-138 "ASTM F 138") - [F1667 Indicative](/materials/astm/f1667 "ASTM F1667") - [F2215 Indicative](/materials/astm/f2215 "ASTM F2215") - [F2281 Indicative](/materials/astm/f2281 "ASTM F2281") - [F3184 Indicative](/materials/astm/f3184 "ASTM F3184") - [F593 Indicative](/materials/astm/f593 "ASTM F593") - [F594 Indicative](/materials/astm/f594 "ASTM F594") - [F738 Indicative](/materials/astm/f738 "ASTM F738") - [F836 Indicative](/materials/astm/f836 "ASTM F836") - [F837 Indicative](/materials/astm/f837 "ASTM F837") - [F879 Indicative](/materials/astm/f879 "ASTM F879") - [F899 Indicative](/materials/astm/f899 "ASTM F899") - [F957 Indicative](/materials/astm/f957 "ASTM F957") SAE AMS United States / Aerospace · 7 - [5507 Indicative coil sheet](/materials/ams/5507 "SAE AMS 5507") - [5524 Indicative](/materials/ams/5524 "SAE AMS 5524") - [5573 Indicative](/materials/ams/5573 "SAE AMS 5573") - [5648 Indicative bar](/materials/ams/5648 "SAE AMS 5648") - [5653 Indicative bar](/materials/ams/5653 "SAE AMS 5653") - [5690 Indicative](/materials/ams/5690 "SAE AMS 5690") - [5691 Indicative](/materials/ams/5691 "SAE AMS 5691") ABNT NBR Brazil · 1 - [316 Indicative](/materials/aisi-sae/316 "ABNT NBR 316") 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 Cr Ni Mo Iron — the balance, never listed by a standard — 63.1 % Cr — 16.5 % Ni — 16.5 % Mo — 1.8 % Traces & impurities · 2.1 % Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade. | Element | % by weight | |---|---| | C | 0.04–0.1 | | Si | 0.3–0.6 | | Mn | ≤ 1.5 | | P | 0.045 | | S | 0.03 | | Cr | 15.5–17.5 | | Mo | 1.6–2 | | Ni | 15.5–17.5 | 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 | 0,04-0,10 | 0.040 | 0.100 | Range | | Si | 0,30-0,60 | 0.300 | 0.600 | Range | | P | 0,045 | 0.045 | 0.045 | Exact | | S | 0,03 | 0.030 | 0.030 | Exact | | Cr | 15,5-17,5 | 15.500 | 17.500 | Range | | Mn | ≤1,50 | — | 1.500 | Max | | Ni | 15,5-17,5 | 15.500 | 17.500 | Range | | Mo | 1,60-2,00 | 1.600 | 2.000 | Range | - ≥(10xC)≤1,20 - ≥(10xC)≤1,20 - ≥(10xC)≤1,20 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 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. ## 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=d2e631b4-b322-4267-a235-5e63954aa481 "Inquiry")[**Datasheet as PDF** Print-ready A4 document **Generating …** **Download started** **Try again**](/materials/material-no/1.4984.pdf "Datasheet as PDF")