GB · China · 1 designation

4CrMnSiMoV

4CrMnSiMoV is a grade designated under GB. Its recorded composition includes C 0.35–0.45%, Si 0.8–1.1%, Cr 1.3–1.5%, Mn 0.8–1.1% and Mo 0.4–0.6%. No cross-standard equivalents are recorded for this grade yet. Recorded mechanical properties include HB ≤ 255.

Designations 1

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Chemical composition

8 elements on file · weight %

What this alloy is

Iron — the balance, never listed by a standard — 95.5 %Cr — 1.4 %Si — 1 %Mn — 1 %Traces & impurities · 1.2 %

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

Element	% by weight
	0.35–0.45
	0.8–1.1
	0.8–1.1
	≤ 0.025
	≤ 0.02
	1.3–1.5
	0.4–0.6
	0.2–0.4

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	0.35-0.45	0.350	0.450	Range
Si	0.8-1.1	0.800	1.100	Range
P	≤0.025	—	0.025	Max
S	≤0.02	—	0.020	Max
V	0.2-0.4	0.200	0.400	Range
Cr	1.3-1.5	1.300	1.500	Range
Mn	0.8-1.1	0.800	1.100	Range
Mo	0.4-0.6	0.400	0.600	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: Ni.

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.

Properties by condition

0 conditions · 0 values

1 further values are held for this grade under a condition the source did not name — a bound with no quantity attached. They are withheld rather than shown against a guessed condition.

Heat treatment

GB /T 1299-2025

Single operationTest specimen

Quenching870–930 °C
Cooling Oil

Supply condition

AnnealingSupply condition

Conditions the standard permits on delivery. No temperature or medium is published for these, so no order and no alternation is implied.

Source: www.caishuku.com

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