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KS · South Korea · 1 designation

STSY317

STSY317 is a grade designated under KS. Its recorded composition includes C ≤ 0.08%, Cr 18.5–20.5%, Mn 1–2.5%, Ni 13–15% and Mo 3–4%. No cross-standard equivalents are recorded for this grade yet.

Chemical composition

8 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 60.5 %Cr — 19.5 %Ni — 14 %Mo — 3.5 %Traces & impurities · 2.5 %

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

Element% by weight
≤ 0.08
≤ 0.65
1–2.5
≤ 0.03
≤ 0.03
18.5–20.5
3–4
13–15
CarbonSiliconManganesePhosphorusSulfurChromiumMolybdenumNickel
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.

ElementAs publishedsource text, verbatimMin% by weightMax% by weightBound
Cmax 0.080.080Max
Simax 0.650.650Max
Pmax 0.030.030Max
Smax 0.030.030Max
Cr18.5 - 20.518.50020.500Range
Mn1 - 2.51.0002.500Range
Ni13 - 1513.00015.000Range
Mo3 - 43.0004.000Range

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

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.