St44-3 1.0144 - DIN 17100-1980

Grade	St44-3
Germany W-Nr.	1.0144
Corresponding Standard	DIN 17100-1980 Steels for General Structural Purposes Quality Standard
Classification	Carbon Steel

St44-3 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	-	-	-	-	-
Maximum Value	0.2	0.55	1.6	0.04	0.04

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.

St44-3 Mechanical Properties

thickness t mm	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
t＜3	430~580	≥275	12~18
3≤t≤16	410~540	≥275	20~22
16＜t≤40	410~540	≥265	20~22
40＜t≤63	410~540	≥255	19~21
63＜t≤80	410~540	≥245	18~20
80＜t≤100	410~540	≥235	18~20

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.
DIN EN 10025-2-2019	Grade Germany W-Nr.

1 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China

Taiwan, China

Japan

South Korea

United States

International Organization for Standardization

Germany

France

Russia

Sweden

United Kingdom

ISC

CNS

JIS

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

GOST

BS EN/BS

Q275
(C5)

U12752

SS490

SS490
(SS50)

SS490

K02901

Fe430A

S275J2G3
S275J2G4
(St44-3N)

1.0144
1.0145
1.0055

S275J2G3
S275J2G4

Ст5кп-2
Ст5кп
БСт5кп-2

1430

S275J2G3
S275J2G4
(43D)

2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel

China	United States	International Organization for Standardization	Germany	France	European Standard		Russia	United Kingdom
GB	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
Q275	A578Gr.70	E275C	St44-3 St44-3U	E28-3	S275J0 Fe430C	1.0143	St4ps St4sp	43C

St44-3 Corresponding Standards(Same grade name, different standards)

1	DIN 17100-1980
	St44-3 1.0144
2	DIN 1652-2-1990
	St44-3 1.0144

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