Characteristics of St3sp-brand steel

 

St3sp is a standard-grade carbon steel used in load-bearing elements of welded and non-welded structures and components. Its chemical composition conforms to the DSTU 2651 and GOST 380 standards.

Classification: Standard-grade structural carbon steel.

Product: Load-bearing elements of welded and non-welded structures and components used in positive temperatures.

 

Chemical composition of St3sp steel, %

С

Si

 Mn

P

S

Ni

Cr

N

Cu

As

0.14-0.22

0.15-0.3
0,4-0,65
<0.04
<0.05
<0.03

<0.3

<0.008

<0.3

<0.08

 

Mechanical properties of St3sp steel

Standard

Minimum yield strength, ReH (MPa)

Ultimate tensile strength, Rm (MPa)

Minimum elongation ratio σ, %

GOST 14637

370-480

245

25

DSTU 8803

370-480

245

25

 

Analogues to St3sp steel

US

A284Gr.D, A57036, A573Gr.58, A611Gr.C, GradeC, K01804, K02001, K02301, K02502, K02601, K02701, K02702, M1017

Germany

1.0038, 1.0116, DC03, Fe360B, Fe360D1, RSt37-2, RSt37-3, S235J0, S235J2G3, S235JR, S235JRG2, St37-2, St37-3, St37-3G

Japan

SS330, SS34, SS400

France

E24-2, E24-2NE, E24-3, E24-4, S235J0, S235J2G3, S235J2G4, S235JRG2

UK

1449-2723CR, 1449-3723CR, 3723HR, 40B, 40C, 40D, 4360-40B, 4360-40D, 4449-250, 722M24, Fe360BFU, Fe360D1FF, HFS3, HFS4, HFW3, HFW4, S235J2G3, S235JR, S235JRG2

EU

Fe37-3FN, Fe37-3FU, Fe37B1FN, Fe37B1FU, Fe37B3FN, Fe37B3FU, S235, S235J0, S235J2G3, S235JR, S235JRG2

Italy

Fe360B, Fe360BFN, Fe360C, Fe360CFN, Fe360D, Fe360DFF, Fe37-2, S235J0, S235J2G3, S235J2G4, S235JRG2

Belgium

FE360BFN, FE360BFU, FED1FF

Spain

AE235BFN, AE235BFU, AE235D, Fe360BFN, Fe360BFU, Fe360D1FF, S235J2G3, S235JRG2

China

Q235, Q235A, Q235A-B, Q235A-Z, Q235B, Q235B-Z, Q235C

Sweden

1312, 1313

Bulgaria

BSt3ps, BSt3sp, Ew-08AA, S235J2G3, S235JRG2, WSt3ps, WSt3sp

Hungary

Fe235BFN, Fe235D, S235J2G3, S235JRG2

Poland

St3S, St3SX, St3V, St3W

Romania

OL37.1, OL37.2, OL37.4

Czech Republic

11375, 11378

Finland

FORM300H, RACOLD03F, RACOLD215S

Austria

RSt360B

 

Application

St3sp steel is used in load-bearing elements of welded and non-welded structures and components that are used in positive temperatures. It is used to make thick- and thin-sheeted products, rolled and shaped profiles (channel sections, I-beams, angle bars, strips, scopes, mountings, etc). It is also used for pipes for various uses and with different cross-sections, forgings, stampings and other metal components. It is used in civil and industrial construction, and in above-ground, overground and underground railways.

 

Welding

St3sp steel can be welded without preheating and subsequent heat treatment. However, for components with gauges over 3.6 cm, it is advisable to heat the material to 100°C and subsequently heat-treat it.

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