St70-2 1.0070 1.0632 - DIN 17100-1980

Grade	St70-2
Germany W-Nr.	1.0070
Old Grade
Corresponding Standard	DIN 17100-1980 Steels for General Structural Purposes Quality Standard
Classification	Carbon Steel

St70-2 Chemical Element Composition Content (%)

Component	P	S	N
Minimum Value	-	-	-
Maximum Value	0.05	0.05	0.009

①For product thickness t >100mm，C content according to the agreement
②For every 0.005% decrease in P below the specified maximum value, N may be increased by 0.001%. The nitrogen (N) content shall not exceed 0.012% in the ladle analysis and 0.014% in the product analysis.
③The content may not exceed 0.55%Si and 1 .60% Mn in the ladle analysis or 0.60%Si and 1 .70% Mn in the sample analysis.

St70-2 Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
t＜3	690~900	≥365	3~8
3≤t≤16	670~830	≥355	10~11
16＜t≤40	670~830	≥355	10~11
40＜t≤63	670~830	≥345	9~10
63＜t≤80	670~830	≥335	8~9
80＜t≤100	670~830	≥325	8~9

① Tensile test values apply to longitudinal specimens for steel with a width < 600 mm; for steel with a width ≥ 600 mm, transverse specimens shall be used.
② U=hot-rolled, non-heat-treated; N=normalized.
③ Impact energy absorption: The average of three tests is taken as the test result. The minimum average value is 23 or 27 J, and only one individual value is allowed to be up to 30% below the maximum (average) value.

New and Old Grade Replacement List

Corresponding Standard	Grade
DIN 17100-1980	Grade Germany W-Nr. Old Grade
DIN EN 10025-2-2019	Grade Germany W-Nr.

Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	International Organization for Standardization	Germany		France	European Standard		Russia	Sweden	United Kingdom
GB	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
Q390C	Fe690 FeE690	St70-2	1.0070	A70 A70-2	E360 Fe690-2①	1.0070	S375	1655-00 1655-01	E360

St70-2 Corresponding Standards(Same grade name, different standards)

1	DIN 17100-1980
	St70-2 1.0070 (1.0632)
2	DIN 1652-1963
	St70-2 1.0633
3	DIN 1652-2-1990
	St70-2 1.0070

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