Q235B Mild Carbon Steel Plate/Sheet

Q235B steel plate has certain elongation, strength, good toughness and castability, is easy to press and weld, and is widely used in the manufacturing of general mechanical parts. It is mainly used for welding structural parts with high quality requirements in construction and bridge engineering

Products Details

Product Introduction

Q235B steel can be manufactured into various structural steel parts, it is vastly used in many different industries for a variety of applications. it is also used in many bridge construction. Buildings are frequently constructed withQ235B steel because of its high strength and toughness. Further more, Q235B steel is also used in fields of automotive, construction, heavy equipment, and oil and gas industries.

Chemical Composition

Mechanical Property

Mechanical Properties



Tensile Strength, Ultimate

400 - 550 MPa

58000 - 79800 psi

Tensile Strength, Yield

250 MPa

36300 psi

Elongation at Break (in 200 mm)



Elongation at Break (in 50 mm)



Modulus of Elasticity

200 GPa

29000 ksi

Bulk Modulus (typical for steel)

140 GPa

20300 ksi

Poissons Ratio



Shear Modulus

79.3 GPa

11500 ks

Product Display

Q235B Hot Rolled Steel Plate

Chemical Composition



Carbon, C

0.25 - 0.290 %

Copper, Cu


Iron, Fe


Manganese, Mn


Phosphorous, P


Silicon, Si


Sulfur, S


Product Advantage

Q235Bbelongs to general low carbon steel, steel product with low carbon content less than 0.3%, it is considerably soft for easy forming, machining, welding. Heat treatment has less effect onQ235B steel material. It contains some other elements including alloy element: manganese, sulfur, phosphorus and silicon. Iron and these elements together forms unique mechanical property of Q235B, unlike stainless steel with nickel and chromium element, it doesn’t show good corrosion resistance. If you need corrosion resistant property, having it painted with a layer of plating is a good choice.

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