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GB · China · 1 designation

ML20Mn

ML20Mn is a grade designated under GB. Its recorded composition includes C 0.18–0.23%, Si ≤ 0.1%, P ≤ 0.03%, S ≤ 0.035% and Mn 0.7–1%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include Rm ≤ 500 N/mm².

Chemical composition

6 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 98.8 %Mn — 0.9 %C — 0.2 %Si — 0.1 %Traces & impurities · 0.1 %

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

Element% by weight
0.18–0.23
≤ 0.1
0.7–1
≤ 0.03
≤ 0.035
≥ 0.02
CarbonSiliconManganesePhosphorusSulfurAluminium
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
C0.18-0.230.1800.230Range
Al≥0.020.020Min
Si≤0.10.100Max
P≤0.030.030Max
S≤0.0350.035Max
Mn0.7-10.7001.000Range

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

Not enough recorded composition to predict a transformation temperature for this grade — missing: Ni, Cr, Mo.

Physical & mechanical properties

Rm≤500N/mm²Max

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.