S235B - ISO 683-18-2014

Grade	S235B
Corresponding Standard	ISO 683-18-2014 Heat-treatable Steels, Alloy Steels and Free-Cutting Steels - Part 18: Bright Steel Products
Classification	Alloy Steel

S235B Chemical Element Composition Content (%)

	Component	C	Mn	P	S ^①	Cu ^③	N ^②
t≤40mm	Minimum Value	-	-	-	-	-	-
t≤40mm	Maximum Value	0.17	1.4	0.04	0.04	0.55	0.012

	Component	C	Mn	P	S ^①	Cu ^③	N ^②
40mm＜t≤100mm	Minimum Value	-	-	-	-	-	-
40mm＜t≤100mm	Maximum Value	0.2	1.4	0.04	0.04	0.55	0.012

① For long products. the max. S content may be increased for improved machinablility ba 0,005 % by agreement if the steel is treated to modify the sulphide morphology and if the chemical composition shows min 0,0020 % Ca.
② The maximum value for nitrogen does not apply if the chemical composition shows a minimum total Al content of 0,020 % or, alternalively, minimum 0,015 % acid soluble Al or if s ufficient other N-binding elements are present. In this case, the N-binding elements shall be mentioned in the inspection document.
③ Cu contenl above 0,40 % can cause hot shortness during hot forming.

S235B Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
5≤t≤10	Cold drawn (+C)	470~840	≥355	≥8
10＜t≤16	Cold drawn (+C)	420~770	≥300	≥9
16＜t≤40	Cold drawn (+C)	390~730	≥260	≥10
40＜t≤63	Cold drawn (+C)	380~670	≥235	≥11
63＜t≤100	Cold drawn (+C)	360~640	≥215	≥11
16＜t≤100	As-rolled + peeled (+SH)	360~510			107~152

Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	International Organization for Standardization	European Standard
GB	ISO	EN	Numerical Grade
Q235B	S235B	S235JRC	1.0122

S235B Corresponding Standards(Same grade name, different standards)

1	ISO 630-2-2011
	S235B
2	ISO 683-18-2014
	S235B
3	ISO 630-2-2021
	S235B

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!