SAE AMS · United States / Aerospace · 10 designations

5545

5545 is a designation in SAE AMS for the material held under material number 2.4973, also listed as NiCr19CoMo. It is a material in the category Nickel and cobalt alloys. We list 10 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, AFNOR, SAE AMS and GB.

Material no. 2.4973
Category Nickel and cobalt alloys · 87 grades
Designations 10

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If you came for one of these

The most-used names for this grade.

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

10 designations · 6 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

NiCr19CoMoThis grade’s own name

UNSUnited States · 1

N07041This grade’s own name

AISI / SAEUnited States · 1

683This grade’s own name

AFNORFrance · 1

NC 19KDTIndicative

SAE AMSUnited States / Aerospace · 4

5545Indicativeplatesheetstrip
5712Indicativebar
5713Indicativebar
5800Indicativewire

GBChina · 2

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

Chemical composition

10 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 54.9 %Cr — 19 %Co — 11 %Mo — 9.8 %Traces & impurities · 5.4 %

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

Element	% by weight
	≤ 0.12
	≤ 0.5
	≤ 0.1
	18–20
	9–10.5
	Balance
	10–12
	1.4–1.8
	2.8–3.3
	≤ 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	≤0,12	—	0.120	Max
Al	1,40-1,80	1.400	1.800	Range
Si	≤0,50	—	0.500	Max
Ti	2,80-3,30	2.800	3.300	Range
Cr	18,0-20,0	18.000	20.000	Range
Mn	≤0,10	—	0.100	Max
Fe	≤5,00	—	5.000	Max
Co	10,0-12,0	10.000	12.000	Range
Ni	Rest/Bal.	46.680	58.800	Balance
Mo	9,00-10,5	9.000	10.500	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.

NiCo20Cr20MoTi2.4650

Ni Rest/Bal. · Cr 19,0-21,0