Chemical composition(%)

Mechanical properties

Advantages of ASTM A36: 

High International Recognition: Adhering to the American ASTM standard, it is a globally recognized benchmark grade for ordinary carbon structural steel, achieving full recognition in North America, Europe, Southeast Asia, and the Middle East. Excellent Machining Performance: Low-carbon design, excellent weldability, high-quality welding without preheating, weld joint strength consistent with the base material, no risk of weld cracking, suitable for secondary processing needs of export products such as steel structures and hardware processing; Excellent cold working performance, easily achieving bending, stamping, cutting, and rolling operations; thick steel plates are not easily deformed during cold working, strong adaptability to downstream processing. Outstanding Cost-Effectiveness: No alloying elements added, simple smelting process, production cost far lower than low-alloy high-strength steel plates such as SM490YA and Q355, affordable pricing, and balanced comprehensive performance, meeting most general structural needs. Ample stock available, flexible production scheduling, rapid response to foreign trade orders, shortening delivery cycles.

Disadvantages of ASTM A36:

Limited Strength:As a common carbon steel, its tensile strength and yield strength are significantly lower than low-alloy high-strength steel plates such as SM490YA and Q355. It is unsuitable for medium-to-heavy-load structures such as bridges and engineering machinery.

Poor Corrosion Resistance:** Lacking added alloying elements for corrosion protection, it has weak resistance to atmospheric and seawater corrosion. It is prone to rusting during open-air storage or long-distance sea transport. For export, it requires anti-corrosion treatment such as painting or galvanizing.

Insufficient Low-Temperature Toughness:** Without mandatory low-temperature impact testing, it is prone to brittleness at low temperatures. It is unsuitable for extremely cold regions such as Northern Europe and Northern Russia. For such regions, it is recommended to use the low-temperature improved version of ASTM A36.

Advantages of Our Factory in Producing ASTM A36 Steel Plates

Our factory strictly adheres to ASTM standards in production, deeply aligning with the core requirements of ASTM A36 steel. We also incorporate the "same line, same standard, same quality" management philosophy, ensuring product quality meets both domestic production standards and overseas acceptance standards, achieving consistent quality for both domestic and international markets. Relying on mature smelting processes, we precisely control the content of basic elements such as C, Si, and Mn, and strictly control the content of P and S impurities (P≤0.040%, S≤0.050%), eliminating excess impurities and solving the pain points of inaccurate element control and large batch fluctuations common among ordinary manufacturers. Each batch of products comes with a complete original material certificate (MTC), clearly indicating core information such as chemical composition, mechanical properties, and furnace batch number, which can be verified through third-party testing. We employ advanced hot rolling technology combined with refined production control and optimized rolling parameters to ensure a smooth, inclusion-free, and crack-free steel plate surface, meeting appearance quality standards. Simultaneously, we improve cold working performance. Through process optimization, we reduce cold working deformation of thick steel plates, easily enabling bending, stamping, cutting, and rolling operations.