AFNOR · France · 3 designations

NK 15 CAT

NK 15 CAT is a designation in AFNOR for the material held under material number 2.4674, also listed as G-NiCo15Cr10AlTiMo. It is a material in the category Nickel and cobalt alloys. We list 3 designations recorded for this grade, in the standards DIN / EN, BS and AFNOR.

Material no. 2.4674
Category Nickel and cobalt alloys · 87 grades
Designations 3

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If you came for one of these

The most-used names for this grade.

DIN / ENG-NiCo15Cr10AlTiMoThis grade’s own name

About Nickel and cobalt alloys

Nickel and cobalt alloys are metallic materials whose properties are developed through nickel-, cobalt-, or combined alloying systems. They are characterised by strong resistance to corrosion, oxidation, wear, and loss of strength at elevated temperatures, making them suitable for turbine components, chemical-processing equipment, and other demanding high-temperature applications.

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

Also known as

3 designations · 3 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

G-NiCo15Cr10AlTiMoThis grade’s own name

BSUnited Kingdom · 1

HC 204Indicative

AFNORFrance · 1

NK 15 CATIndicative

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

Chemical composition

16 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 60.4 %Co — 15 %Cr — 9.5 %Al — 5.5 %Traces & impurities · 9.6 %

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

Element	% by weight
	0.15–0.2
	≤ 0.2
	≤ 0.2
	0.015
	8–11
	2–4
	Balance
	0.7–1.2
	13–17
	≤ 0.2
	5–6
	4.5–5 —
	0.01–0.02 —
	≤ 0.002
	0.03–0.09
	≤ 1

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
B	0,010-0,020	0.010	0.020	Range
C	0,15-0,20	0.150	0.200	Range
Al	5,00-6,00	5.000	6.000	Range
Si	≤0,20	—	0.200	Max
S	0,015	0.015	0.015	Exact
Ti	4,50-5,00	4.500	5.000	Range
V	0,70-1,20	0.700	1.200	Range
Cr	8,00-11,0	8.000	11.000	Range
Mn	≤0,20	—	0.200	Max
Fe	≤1,00	—	1.000	Max
Co	13,0-17,0	13.000	17.000	Range
Ni	Rest/Bal.	53.873	66.595	Balance
Cu	≤0,20	—	0.200	Max
Zr	0,03-0,09	0.030	0.090	Range
Mo	2,00-4,00	2.000	4.000	Range
Pb	(≤0,002)	—	0.002	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.

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 / Co 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.

NiCr20Co13Mo4Ti3Al2.4654

Ni Rest/Bal. · Co 12,0-15,0