GOST · Russia / CIS · 3 designations

ДИ-21

ДИ-21 is a designation in GOST for the grade also listed as 08KH17N6T. 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.

GOST08KH17N6TThis 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Withdrawndesignation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once.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

9 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 74.8 %Cr — 17.3 %Ni — 6 %Si — 0.8 %Traces & impurities · 1.2 %

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

Element	% by weight
	≤ 0.08
	≤ 0.8
	≤ 0.8
	≤ 0.035
	≤ 0.02
	16.5–18
	5.5–6.5
	0.15–0.35
	≤ 0.003

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	max 0.003	—	0.003	Max
C	max 0.08	—	0.080	Max
Si	max 0.8	—	0.800	Max
P	max 0.035	—	0.035	Max
S	max 0.02	—	0.020	Max
Ti	0.15 - 0.35	0.150	0.350	Range
Cr	16.5 - 18	16.500	18.000	Range
Mn	max 0.8	—	0.800	Max
Ni	5.5 - 6.5	5.500	6.500	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: 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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