DIN / EN · Europe · 6 designations

GX10NiCrSiNb32-20

GX10NiCrSiNb32-20 is a designation in DIN / EN for the material held under material number 1.4859, also listed as GX10NiCrNb32-20. It is a material in the category Heat-resistant cast steels. We list 6 designations recorded for this grade, in the standards DIN / EN, UNS, AISI / SAE, BS and JIS.

Material no. 1.4859
Category Heat-resistant cast steels · 82 grades
Designations 6

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If you came for one of these

The most-used names for this grade.

UNSN08151This grade’s own name

About Heat-resistant cast steels

Heat-resistant cast steels are cast ferrous alloys formulated for service at elevated temperatures, where resistance to softening and thermal degradation is important. They are used for furnace components, heat-treatment equipment and other high-temperature plant parts that require cast shapes and dependable mechanical performance during heating.

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

Also known as

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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.

DIN / ENEurope · 2

GX10NiCrNb32-20This grade’s own nameWithdrawn
GX10NiCrSiNb32-20This grade’s own name

UNSUnited States · 1

N08151This grade’s own name

AISI / SAEUnited States · 1

N08151Indicative

BSUnited Kingdom · 1

Thermax 532Indicative

JISJapan · 1

SCH 34Indicative

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 — 42.8 %Ni — 32 %Cr — 20 %Mn — 2 %Traces & impurities · 3.2 %

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

Element	% by weight
	0.05–0.15
	0.5–1.5
	≤ 2
	0.04
	0.03
	19–21
	≤ 0.5
	31–33
	≤ 0.5
	0.5–1.5

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	0,05-0,15	0.050	0.150	Range
Si	0,50-1,50	0.500	1.500	Range
P	0,04	0.040	0.040	Exact
S	0,03	0.030	0.030	Exact
Cr	19,0-21,0	19.000	21.000	Range
Mn	≤2,00	—	2.000	Max
Ni	31,0-33,0	31.000	33.000	Range
Cu	≤0,50	—	0.500	Max
Nb	0,50-1,50	0.500	1.500	Range
Mo	≤0,50	—	0.500	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

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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