ASTM A36 plates VS ASTM A572 grade50 plates

ASTM A36 plates VS ASTM A572 grade50 plates

ASTM A36 and ASTM A572 are two commonly used structural steel plate standards. Due to their excellent performance, they are widely used in various fields, such as industrial manufacturing, bridge and building construction. ASTM A572 consists of five different grades: 42, 50, 55, 60, and 65, each with slightly different chemical and mechanical properties.

Chemical composition contrast:

The carbon content of A36 steel plate is between 0.5% and 0.25%, which is a steel plate with low carbon content. Due to its low carbon content, the texture is softer, the ductility is strong, and it can be processed into a variety of structural shapes.
A572 grade50 steel plate is also a mild steel plate, but it contains more alloying elements, making it higher strength, is a high-strength low-alloy steel plate. This steel plate has the characteristics of high strength and high toughness, so it is very suitable for structural applications that need to withstand high stress, such as Bridges, construction, structural engineering and other fields.

Comparison of mechanical properties:

	Yield strength	Tensile strength	Elongation A/%
A36	250Mpa	400-500Mpa	23
A572 grade50	345Mpa	450Mpa	18

Due to the higher content of alloying elements in A572 sheet, compared with A36, A572 has higher strength, which makes A572 have stronger yield strength, and A36 sheet has fewer alloying elements and lower carbon content, so it has good ductility.

Comparison of application fields:
A36 steel plate is suitable for ordinary building steel structures, and lightweight structural components, etc., suitable for low-stress, conventional structure applications. The A572 grade50 steel plate is suitable for high-strength building structures and high-load mechanical parts, etc., and is suitable for high-pressure environments requiring high strength and high durability.

Machinability:

A36 steel has good weldability, machinability and formability, while A572 is slightly inferior to A36, but A572 performs well in high-strength application scenarios.

Conclusion
Both ASTM A36 and ASTM A572 Grade 50 are excellent structural steel standards that should be weighed against the specific needs of the project (strength, cost, processability, etc.).