St50-2 1.0050 1.0532 - DIN 17100-1980

Grade	St50-2
Germany W-Nr.	1.0050
Old Grade
Corresponding Standard	DIN 17100-1980 Steels for General Structural Purposes Quality Standard
Classification	Carbon Steel

St50-2 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.

St50-2 Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
t＜3	490~660	≥295	10~16
3≤t≤16	470~610	≥295	18~20
16＜t≤40	470~610	≥285	18~20
40＜t≤63	470~610	≥275	17~19
63＜t≤80	470~610	≥265	16~18
80＜t≤100	470~610	≥255	16~18

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.

1 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	Japan	Germany	France	European Standard		Russia	Sweden
GB	JIS	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS
Q275 Q275Z	SS500	St50-2	A50-2 A60-2	E295 Fe490-2①	1.0050	S285 St5ps St5sp	1550-00 1550-01

2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	Germany	France	European Standard
GB	DIN EN/DIN	NF EN/NF	EN	Numerical Grade
Q275	St50-2 St50-2KG	A50-2	E295GC Fe490-2	1.0533

St50-2 Corresponding Standards(Same grade name, different standards)

1	DIN 17100-1980
	St50-2 1.0050 (1.0532)
2	DIN 1652-1963
	St50-2 1.0533
3	DIN 1652-2-1990
	St50-2 1.0050
4	Q/BQB 130-2003
	St 50-2

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