World of Steel® - Flat Bar

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Home> Learning Center> Chinese Steel Grades> Flat Bar

Flat Bar

Quality: Q235B, Q345B, SS400, S275JR, S235JR, ASTM A36

Chemical Composition & Mechanical Properties refer to the table:

	Chemical Composition %					Mechanical Properties
Steel Brand	C	Si	Mn	P	S	Elongation %	Yield Strength Mpa	Tensile Strength Mpa
Q235B	0.12-0.20	<=0.30	0.30-0.70	<=0.045	<=0.045	>=25	>=235	375-500
Q345B	<=0.20	<=0.55	1.00-1.60	<=0.040	<=0.040	>=21	>=345	470-630
SS400	/	/	/	<=0.050	<=0.050	>=21	>=245	>=400
S275JR	<=0.21	/	<=1.5	<=0.035	<=0.035	/	>=275	380-540
S235JR	<=0.20	/	/	<=0.045	<=0.045	/	>=235	290-510

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