High Tensile Steel Plate

High strength high tensile steel plates are steels with low carbon content. This kind of carbon structural steel has very good tensile strength, good toughness, plasticity and processing property, and are widely used in structural assemblies where welding process is involved.

ST52-3 steel is a structural steel that can be readily welded and it has the mechanical properties of 355 N/mm² for yield strength and 490 – 630 N/mm² for tensile strength respectively. It possesses excellent cold forming properties comparing to its low carbon equivalent. ST52-3 is equivalent to S355JR and S355J2.

We supply two kinds of high strength high tensile steel, namely ST52-3 and Wel-Ten 780E.

General Applications:-
  • Structural assemblies (good weldability)
  • piping
  • pressure vessels
  • civilian construction and underground engineering
  • bridge structures
  • marine structures
  • container manufacturing
  • automotive and machine mahufacturing

ST52-3 Weldable High Strength Steel

Chemical Composition (%) C Si Mn P S
0.20  max. 0.15-0.20 1.60 max. 0.04 0.04
Nearest Equivalent AISI 1024 JIS 3106 / SM490 Weekstoff 1.0553

Wel-Ten 780E Weldable High Strength Steel

Chemical Composition (%) C Si Mn Cr Mo Cu Ni B V
0.16 0.35 0.60-1.50 0.80 0.15-0.60 0.15-1.50 0.1 0.005 0.10 max.
Nearest Equivalent ASTM A514 A517 WES HW 685 ISO E690