GOST · Russia / CIS · 3 designations

ЭП-389

ЭП-389 is a designation in GOST for the grade also listed as Sv-08Kh25N13BTYu. We list 3 designations recorded for this grade, in the standards GOST.

Designations 3

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If you came for one of these

The most-used names for this grade.

GOSTSv-08Kh25N13BTYuThis grade’s own name

Also known as

3 designations · 1 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.

GOSTRussia / CIS · 3

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 — 58.3 %Cr — 25 %Ni — 13 %Nb — 0.9 %Traces & impurities · 2.9 %

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

Element	% by weight
	≤ 0.1
	0.6–1
	≤ 0.55
	≤ 0.03
	≤ 0.02
	24–26
	12–14
	0.4–0.9
	0.5–0.9
	0.7–1.1

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	max 0.1	—	0.100	Max
Al	0.4 - 0.9	0.400	0.900	Range
Si	0.6 - 1	0.600	1.000	Range
P	max 0.03	—	0.030	Max
S	max 0.02	—	0.020	Max
Ti	0.5 - 0.9	0.500	0.900	Range
Cr	24 - 26	24.000	26.000	Range
Mn	max 0.55	—	0.550	Max
Ni	12 - 14	12.000	14.000	Range
Nb	0.7 - 1.1	0.700	1.100	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: Mo.

Physical & mechanical properties

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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