What are the common properties of low-alloy steel grades St52-3, St50-2, S355JR, S355J2, S355NL, A572 Grade 60, A633 Grade A, Q345B, and SM490A?

TAGS: strength | steel | nmm² |

All of the steel grades listed have low alloy content, meaning that they have a low percentage of alloying elements such as chromium, molybdenum, and nickel in their composition. As a result, these steel grades are less expensive than high alloy steels while still exhibiting desirable mechanical properties for a variety of applications.

St52-3, St50-2, S355JR, S355J2, and S355NL are all European standard low alloy steels that are commonly used in structural applications. They have high strength and good toughness, making them suitable for use in machinery, construction, and transportation equipment. These steel grades have a minimum yield strength of 355 N/mm², indicating their exceptional strength.

A572 Grade 60 is an American standard low alloy steel commonly used in bridges, buildings, and construction equipment. This grade has a yield strength of 415 N/mm² and a tensile strength of 520-680 N/mm², making it an excellent choice for high-stress applications.

A633 Grade A is a low alloy steel that is commonly used in offshore structures and shipbuilding. It has high strength and good ductility, making it suitable for use in harsh environments. This steel grade has a minimum yield strength of 290 N/mm² and a tensile strength of 435-570 N/mm².

Q345B is a Chinese standard low alloy steel commonly used in construction and manufacturing. It has a minimum yield strength of 345 N/mm² and a tensile strength of 470-630 N/mm², making it ideal for use in a wide range of applications.

SM490A is a Japanese standard low alloy steel commonly used in the construction of ships, bridges, and buildings. This grade has a minimum yield strength of 325 N/mm² and a tensile strength of 490-610 N/mm², making it suitable for use in high-stress applications where strength and toughness are required.

while the steel grades listed vary in their specific mechanical properties, they are all low alloy steels with high strength and good toughness. These properties make these steels ideal for use in a wide range of applications across various industries.