Structural Steels

Structural Steels offers a range of products tailored for construction and engineering applications. S355J2/S355J2G3/1.0577 is a low-carbon, high-strength structural steel suitable for various engineering uses, while 16/20MnCr5 is a manganese-chromium alloy steel commonly utilized in gear and bearing manufacturing. Each product aligns with the high standards of building and engineering requirements.

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S355J2 steel/S355J2G3 steel/1.0577​ steel

Material Classification

Carbon manganese, high yield non-alloy steel.

Meaning of S355J2

“S” for Structural steel; “355” for minimum yield strength of 355 MPa (≤ 16mm thickness); “J2” for 27J impact energy at -20°C (-4°F).

Weldability

Excellent; readily weldable to other weldable steel.

Core Material Properties

Good cold-forming due to low carbon equivalent; typically supplied in a normalized condition.

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Chemical Composition

CSiMnPSCuCrNi
0.20%0.55%1.60%0.025%0.025%0.55%0.30%0.30%

Product Information

ProcessHot rolled/forged
Size16-1200 mm
LengthRods 6/9/12 meter, any length, customized fixed-length, multiple length
Surface ConditionBlack surface, Rough turned, Peeling, Grinding
Heat TreatmentNormalized, Annealed, Quenching and Tempered, FP, SR
Delivery TimeWithin 7 days
UTSEP1921-84 D/d, EN10028-3 or ASTM A388
Stock≥3500 mt
Size6mm-16mm
As customers’ required, we also provide cold drawn material

Heat Treatment

1 +A: Annealed (full/soft/spheroidizing)

2 +N: Normalized

3 +NT: Normalized and tempered

4 +QT: Quenched and tempered (water/oil)

Applications

S355J2G3 steel is a carbon manganese ,high yield non alloy steel. It is called S355 because of the average minimum yield for this material is 355 Mpa.As a structural steel,it has excellent strength and weldability.It can be readily welded to other weldable steel. For its low carbon equivalent, it possesses good cold-forming properties. S355J2G3 is generally supplied in a normalized condition.

16steel/20MnCr5 steel

Material Classification

European carburized, case hardening steel.

Primary Applications

Gears, worms, sealing bushings, and other components.

Key Features

Good hardenability and machinability; high surface hardness post heat treatment; notable low-temperature impact toughness.

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Chemical Composition

CMnSiCrSP
0.14-0.19%1.00-1.30%0.15-0.40%0.80-1.10%lowlow

Product Information

ProcessHot rolled/forged
Size16-1200 mm
LengthRods 6/9/12 meter, any length, customized fixed-length, multiple length
Surface ConditionBlack surface, Rough turned, Peeling, Grinding
Heat TreatmentNormalized, Annealed, Quenching and Tempered, FP, SR
Delivery TimeWithin 7 days
UTSEP1921-84 D/d, EN10028-3 or ASTM A388
Stock≥2000 mt
Size6mm-16mm
As customers’ required, we also provide cold drawn material

Heat Treatment

1 +A: Annealed (full/soft/spheroidizing)

2 +N: Normalized

3 +NT: Normalized and tempered

4 +QT: Quenched and tempered (water/oil)

Applications

EN 1.7131 steel (16MnCr5 material) is an European standard carburized steel (case hardening steel) with good hardenability and machinability. For larger cross-section parts, high surface hardness and wear resistance can be obtained after heat treatment, and low-temperature impact toughness is also high.

20MnCr5 steel (1.7147 material) is an European standard carburized steel (case hardening steel) with high strength and toughness and good hardenability. The quenching deformation is small, the low temperature toughness and the machinability are good, but the welding performance is low. It’s generally used after carburizing quenching or quenching and tempering.