ASTM A36 Steel Flat Bars

ASTM A36 Steel Flat Bars
ASTM A36 is a carbon structural steel grade widely used in construction and manufacturing. With a maximum carbon content of 0.3%, it offers excellent weldability, formability, and machinability. Mechanical properties include a minimum yield strength of 250 MPa (36 ksi) and tensile strength of 400-550 MPa, ensuring reliable performance under static and dynamic loads.Applications span structural frameworks, bridge components, machinery bases, and general fabrication. The material’s low cost, corrosion resistance through galvanization, and compatibility with bolting/riveting make it a staple in commercial buildings, industrial equipment, and infrastructure projects.
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◉ Key Attributes

Product nameASTM A36 Steel Flat Bars
StandardASTM, AISI, EN, DIN, JIS, GB
GrateA36, S235JR, S355JR,St37-2, SS400, Q235, Q195,Q345
Techniquehot rolled, slitted, round edge
SizeWidthThicknessLength
10-200mm1.5-30mm6m, 9m, 12m or customized
ApplicationConstruction/Shipbuilding/Machinery manufacturing/Steel structure
Features1. High quality
2.High dimensional accuracy
3. High utilization rate of material
4. Saving cost price
Packing Details1. Iron sheet in both ends
2.All wrapped packing with plastic woven bag
3.Loose package
4.As the requirement of customer.
SizeLengthWeight
(lbs/ft)
1/8" x 1/2"240.00"0.213
1/8" x 5/8"240.00"0.266
1/8" x 3/4"240.00"0.319
1/8" x 7/8"240.00"0.372
1/8" x 1"240.00"0.425
1/8" x 1-1/4"240.00"0.531
1/8" x 1-1/2"240.00"0.638
1/8" x 1-3/4"240.00"0.744
1/8" x 2"240.00"0.850
1/8" x 2-1/2"240.00"1.060
1/8" x 3"240.00"1.280
1/8" x 3-1/2"240.00"1.490
1/8" x 4"240.00"1.700
1/8" x 4-1/2"240.00"1.913
1/8" x 5"240.00"2.125
1/8" x 6"240.00"2.550
1/8" x 8"240.00"3.333
1/8" x 10"240.00"4.250
1/8" x 12"240.00"5.000
3/16" x 1/2"240.00"0.319


◉ Product Details

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Product Introduction


ASTM A36 steel flat bars are a cornerstone of the construction and manufacturing industries, prized for their versatility and cost-effectiveness. As a low-carbon structural steel, A36 contains less than 0.3% carbon, which grants it exceptional weldability and machinability. These bars are typically produced via a hot-rolling process, resulting in a characteristic blue-grey, slightly rough surface finish with rounded edges.

Mechanically, A36 is defined by a minimum yield strength of 36,000 psi and a tensile strength range of 58,000 to 80,000 psi. Its high ductility allows it to be easily bent, drilled, and formed into various shapes without sacrificing structural integrity. While it lacks the high corrosion resistance of stainless steel, it is frequently galvanized or painted to enhance durability in outdoor environments.


About Us


Zhongxi (Shandong) Metal Technology Co., Ltd. is a professional steel manufacturing enterprise integrating R&D, production, sales, and service. The factory boasts advanced production equipment and an intelligent management system, with an annual export volume exceeding 300,000 tons. With high-quality products and excellent customer service, our sales network covers numerous countries and regions in the United States, Europe, Southeast Asia, the Middle East, Africa, and South America.

Our main products include carbon steel (carbon steel coils, carbon steel plates, carbon steel pipes, carbon steel wire), structural steel (angle steel, channel steel, I-beams, H-beams, round steel, flat steel, square steel, hexagonal steel), stainless steel (stainless steel coils, stainless steel plates, stainless steel pipes), galvanized steel (galvanized coils, galvanized plates, galvanized pipes), PPGI, PPGL, billets, reinforcing bars, tinplate, and other products.

Adhering to the principle of "Quality First, Reputation Supreme," we are committed to providing customers with high-quality and sufficient products. If you are interested in our products or wish to discuss custom orders, please feel free to contact us. We look forward to establishing successful business relationships with new customers around the world in the near future.

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Advantages of A36 Steel Flat Bars


1. Exceptional Weldability & Fabrication: A36 is a low-carbon steel (typically <0.3%), making it easy to weld, cut, and form without requiring complex heat treatments.

2. Cost-Effectiveness: Due to its common, hot-rolled production, A36 is relatively inexpensive, offering high value for general structural projects.

3. Versatile Mechanical Properties: It has a minimum yield strength of 36,000 psi (250 MPa) and an ultimate tensile strength of 58,000-80,000 psi (400-550 MPa), providing strong, reliable support for beams, braces, and frameworks.

4. High Ductility and Machinability: A36 has about 20%-23% elongation, making it highly malleable for forming, with a high machinability rating.

5. Wide Availability: Due to its popularity, A36 flat bars are readily available in numerous thicknesses and widths for, repairs, structural, framing, and manufacturing needs.


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Quality Control


We have our own Physical & Chemical Testing Center Lab to guarantee our product quality. Our test items & instrument fully meet international standards.


Application of A36 Steel Flat Bars


1. Construction & Structural Engineering: Used for building frames, supporting bridges, and general structural reinforcements.

2. Fabrication & Manufacturing: Ideal for creating brackets, braces, gussets, base plates, and machine frames.

3. Machinery & Equipment: Commonly used in the construction of heavy machinery, trailers, agricultural equipment, and industrial components.

4. General Purpose Fabrication: Suitable for welding, riveting, or bolting, often used in making racks, supports, and decorative or functional metal parts.


Contact Us


As a leading company, Zhongxi Metal is known for our excellent product quality and professional services, providing our customers with a reliable partner. We have a global sales network that can meet the needs of customers in different countries and regions.If you need more information about us or have any other needs, please feel free to contact us. We look forward to working with you to create a better future.


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