Difference between Q195, Q215, Q235 & Q275 steel

Jul. 10, 2018

Difference between Q195, Q215, Q235

Here we show the difference between Q195, Q215, Q235 & Q275 steel, these series steel all belong to Chinese standard carbon structural steel, the lising below shows the difference of chemical composition and mechanical properties.

Chinese Standard Carbon Structural Steel Specification

		Chemical Composition
Steel Series	Steel Grade	C % (≤)	Si % (≤)	Mn (≤)	P (≤)	S (≤)
Q195	Q195	0.12	0.3	0.5	0.035	0.04
Q215 Series	Q215A	0.15	0.35	1.2	0.045	0.05
Q215 Series	Q215B	0.15	0.35	1.2	0.045	0.045
Q235 Series	Q235A	0.22	0.35	1.4	0.045	0.05
	Q235B	0.2	0.35	1.4	0.045	0.045
	Q235C	0.17	0.35	1.4	0.04	0.04
	Q235D	0.17	0.35	1.4	0.035	0.035
Q275 Series	Q275A	0.24	0.35	1.5	0.045	0.05
	Q275B	0.21	0.35	1.5	0.045	0.045
	Q275C	0.2	0.35	1.5	0.04	0.04
	Q275D	0.2	0.35	1.5	0.035	0.035

	Mechanical Properties (N/mm2 = Mpa)
Grade	Yield Strength	Tensile Strength
Q195	195	315-430
Q215	215	335-450
Q235	235	370-500
Q275	275	410-540

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