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KS · South Korea · 1 designation

STBH340

STBH340 is a grade designated under KS. Its recorded composition includes C ≤ 0.18%, Si ≤ 0.35%, P ≤ 0.035%, S ≤ 0.035% and Mn 0.3–0.6%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm 340 N/mm², Re 175 N/mm² and A 27–35%.

Chemical composition

5 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 99 %Mn — 0.4 %Si — 0.4 %C — 0.2 %Traces & impurities · 0.1 %

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

Element% by weight
≤ 0.18
≤ 0.35
0.3–0.6
≤ 0.035
≤ 0.035
CarbonSiliconManganesePhosphorusSulfur
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 0.180.180Max
Simax 0.350.350Max
Pmax 0.0350.035Max
Smax 0.0350.035Max
Mn0.3 - 0.60.3000.600Range

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: Ni, Cr, 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.