UNS · United States · 4 designations

N07500

N07500 is a designation in UNS for the material held under material number 2.4983, also listed as NiCr18Co. It is a material in the category High-temperature steels. We list 4 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE and AFNOR.

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If you came for one of these

The most-used names for this grade.

About High-temperature steels

High-temperature steels are steels designed to retain useful strength and structural stability during exposure to elevated temperatures. Their alloying systems provide resistance to oxidation, creep and loss of mechanical properties during prolonged heating, making them suitable for furnace components, heat exchangers, boilers and other hot-service equipment.

This describes the material class as a whole. Always confirm the individual grade against the standard before ordering.

Also known as

4 designations · 4 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.

DIN / ENEurope · 1

NiCr18CoThis grade’s own name

UNSUnited States · 1

N07500This grade’s own name

AISI / SAEUnited States · 1

684This grade’s own name

AFNORFrance · 1

NCK 19 DATIndicative

Every designation on file is listed — no truncation, no “+ n more”. Each one is itself a route that leads back here.

Chemical composition

12 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 51.6 %Cr — 18.5 %Co — 18.5 %Mo — 4 %Traces & impurities · 7.4 %

Logarithmic scale, 0.01 % to 100 % — every value here compares directly, decade by decade.

Element	% by weight
	≤ 0.15
	≤ 0.5
	≤ 1
	0.02
	0.01
	17–20
	3–5
	Balance
	17–20
	2.5–3.2 —
	2.5–3.2 —
	≤ 4

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	≤0,15	—	0.150	Max
Al	2,50-3,20	2.500	3.200	Range
Si	≤0,50	—	0.500	Max
P	0,02	0.020	0.020	Exact
S	0,01	0.010	0.010	Exact
Ti	2,50-3,20	2.500	3.200	Range
Cr	17,0-20,0	17.000	20.000	Range
Mn	≤1,00	—	1.000	Max
Fe	≤4,00	—	4.000	Max
Co	17,0-20,0	17.000	20.000	Range
Ni	Rest/Bal.	42.920	57.970	Balance
Mo	3,00-5,00	3.000	5.000	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: Ni.

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.

Similar grades — and why

Selection rule, stated so you can disagree with it: same number class 2.4, a shared category, and a published range for Ni / Cr 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.

NiCr20CoMo2.4982

Ni Rest/Bal. · Cr 18,0-21,0