Q235B-ASTM A36 Carbon Coil/Sheet for industry

Q235B Carbon Steel Coil
Payment Term:TT,L/C,etc
Price Term:Ex-Work,FOB,CNF,CFR,etc
Package:Standard export package,such as wooden box or as required.
Samples:Free samples are provided but the freight is borne by the buyer

Carbon Steel Description
Thickness(mm) Hot Rolled Thickness:2.75mm-100mmCold Rolled Thickness:0.2mm-3mm
Width(mm) 45mm-2200mm, As Your Request
Length 1-12m,as Your Request
Tolerance ±1%
Technique Hot rolled / cold rolled
Delivery Time 8-14 days upon receipt of the deposit
Package Standard Export Packing or As Customers Requirement

Product Introduction

Q235B is a commonly used low carbon structural steel in China. It belongs to the category of carbon structural steel, and its chemical composition and mechanical properties are regulated by the Chinese national standard GB/T 700-2006. Q235B is equivalent to ASTM A36 in the United States, DIN St37-2 in Germany, and S235JR in European standards.

The “Q” in Q235B stands for “yield strength” and the number “235” represents the minimum yield strength in megapascals (MPa). The letter “B” indicates that the steel grade has a minimum impact test value of 27 Joules at a temperature of 20°C.

Q235B carbon steel has the following general characteristics:

1)Low Carbon Content: The carbon content in Q235B is generally less than 0.22%, making it a low carbon steel suitable for welding and forming processes.

2)Good Weldability: Q235B can be easily welded using common welding methods such as arc welding, resistance welding, and gas welding.

3)High Strength: Although it is a low carbon steel, Q235B has relatively high tensile strength, with a yield strength of 235 MPa and a tensile strength of 370-500 MPa.

4)Excellent Plasticity: Q235B exhibits good plasticity, allowing it to be formed into various shapes and structures without fracturing.

5)Wide Application: Q235B is widely used in general structural and engineering purposes, including construction, bridges, machinery manufacturing, transportation equipment, and other industries where strength and durability are required.

Q235B Steel Chemical Composition:

Element Composition (%)
Carbon (C) 0.12-0.20
Silicon (Si) 0.30
Manganese (Mn) 0.30-0.70
Phosphorus (P) ≤0.045
Sulfur (S) ≤0.045
Iron (Fe) Balance


Q235B has a wide range of applications in various industries due to its good mechanical properties and affordability. Some common applications of Q235B include:

1)Construction: Q235B is extensively used in the construction industry for various structural components, such as beams, columns, and frameworks. It is suitable for both residential and commercial construction projects.

2)Bridges: Q235B is commonly used for bridge construction, including the fabrication of bridge girders, piers, and structural supports. Its high strength and good weldability make it suitable for bridge applications.

3)Machinery Manufacturing: Q235B is employed in the manufacturing of machinery and equipment components, such as frames, chassis, and structural parts. Its versatility and easy machinability make it a preferred choice for various machinery applications.

4)Automotive Industry: Q235B is utilized in the automotive industry for the production of components like car frames, chassis, and structural parts. Its high strength and good formability make it suitable for automotive applications.

5)Railway Vehicles: Q235B is also used in the manufacturing of railway vehicles, including railcar bodies, underframes, and structural components. Its mechanical properties and durability meet the requirements of the railway industry.

6)Storage Tanks: Q235B is sometimes employed in the construction of storage tanks for storing liquids or gases. Its weldability and strength make it suitable for this application.

7)General Fabrication: Q235B is widely utilized in general fabrication processes where a low carbon steel with good mechanical properties is required. It can be formed, welded, and machined to create various structures and components.

Classification By Size:

The length is generally 2440mm, 2000mm, 3050mm, 4000mm, 3000mm, and the thickness is distinguished by cold rolling and hot rolling. Cold rolling mainly has thickness 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm. The main thickness of hot rolling is 3.0mm, 4.0mm, 6.0mm, 8.0mm, 10.0mm, and the width is generally 1000mm, 1219mm, 1500mm.Please contact customer service for general specifications.

Hot-rolled products have excellent properties such as high strength, good toughness, easy processing and good weldability, so they are widely used in manufacturing industries such as steel, construction, machinery, boilers, and pressure vessels. Application range: (1) After annealing, it is processed into ordinary cold rolling; (2) The galvanizing unit with pre-annealing treatment device processes galvanizing; (3) Panels that basically do not need to be processed.

Hot-rolled coils (in the form of flat plates or coils) generally have a thickness of 2.0-13.5mm, of which the price of 2.0-3.0mm hot coils gradually decreases from thin to thick; most steel mills have a basic price of 3.1mm-13.5mm Equivalent, the price of 3.1-4.0mm and 9.5mm-13.5mm hot plate coils in some manufacturers and markets may be higher than the price of 4.0mm-9.5mm plates. Hot plate coils represent products with a thickness of 5.5mm. Under normal circumstances, the price of flat plates is slightly higher than the price of coils.

Why choose us?

*Top 20 companies in steel industry trade volume.

*Customized processing steel one-stop purchase.

*Exports of steel exceeded tens of billions for 5 consecutive years.

**We have a complete set of testing equipment, such as ut & ET, hydraulic testing equipment, spectrometer, scanning electron microscope, etc, and have passed SGS TUV

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