DIN / EN · Europe · 1 designation

GX130CrSi29

GX130CrSi29 is a material in the category Heat-resistant cast steels, held under material number 1.4777. Its recorded composition includes C 1.2–1.4%, Si 1–2.5%, Cr 27–30%, Mn 0.5–1% and Ni 1%. No cross-standard equivalents are recorded for this grade yet. Its recorded density is 7.85 g/cm³.

Material no. 1.4777
Category Heat-resistant cast steels · 82 grades
Designations 1

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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.

Chemical composition

8 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 66.1 %Cr — 28.5 %Si — 1.8 %C — 1.3 %Traces & impurities · 2.3 %

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

Element	% by weight
	1.2–1.4 —
	1–2.5
	0.5–1
	0.035
	0.03
	27–30
	≤ 0.5
	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
C	1,20-1,40	1.200	1.400	Range
Si	1,00-2,50	1.000	2.500	Range
P	0,035	0.035	0.035	Exact
S	0,03	0.030	0.030	Exact
Cr	27,0-30,0	27.000	30.000	Range
Mn	0,50-1,00	0.500	1.000	Range
Ni	1	1.000	1.000	Exact
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.

Similar grades — and why

Selection rule, stated so you can disagree with it: same number class 1.4, a shared category, and a published range for Cr / Si 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.

GX40CrSi281.4776

Cr 27,0-30,0 · Si 1,00-2,50