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
Designations 64

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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 namerecorded in our sources as this grade’s own designation under that standard.

Indicativetaken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering.

Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.

UNSUnited States · 2

AISI / SAEUnited States · 2

SAE AMSUnited States / Aerospace · 7

ABNT NBRBrazil · 1

316Indicative

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

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
	0.04–0.1
	0.3–0.6
	≤ 1.5
	0.045
	0.03
	15.5–17.5
	1.6–2
	15.5–17.5

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 publishedsource 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

Density7,85g/cm³Exact

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.

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