ST37-2 Equivalent Grades Worldwide

ST37-2 steel plate is one of the most recognized structural steel grades in the global steel industry. Originally specified under the German DIN 17100 standard, ST37-2 has been widely used in construction, machinery manufacturing, steel structures, and general engineering applications. Although DIN 17100 has been replaced by newer standards, ST37-2 remains a commonly referenced grade, especially in international trade. Understanding its equivalent grades worldwide is essential for buyers, engineers, and procurement professionals sourcing steel from different regions.
The closest modern equivalent to ST37-2 is S235JR under the EN 10025-2 European standard. In fact, S235JR effectively replaced ST37-2 when European steel standards were harmonized. Both grades offer similar chemical composition, yield strength, tensile strength, and fabrication characteristics, making them interchangeable in many structural applications.
In the United States, ASTM A36 is often considered the nearest equivalent to ST37-2. ASTM A36 is a low-carbon structural steel widely used in buildings, bridges, and industrial structures. While ASTM A36 generally provides slightly higher minimum yield strength than ST37-2, the two grades are frequently used as substitutes depending on project requirements.
In China, the most commonly accepted equivalent is Q235B under the GB/T 700 standard. Q235B shares comparable mechanical properties and excellent weldability, making it one of the most widely used structural steel grades in the Chinese market. Many international buyers compare Q235B directly with ST37-2 during procurement.
Other common equivalents include SS400 in the Japanese JIS G3101 standard and Fe360B in older European designation systems. Both grades offer similar strength levels and are commonly used in general structural and fabrication applications.
The following comparison provides a simplified overview of common equivalents:
DIN 17100: ST37-2
EN 10025-2: S235JR
ASTM: A36
GB/T 700: Q235B
JIS G3101: SS400
UNI (Italy): Fe360B
Despite these similarities, buyers should understand that equivalent grades are not always chemically identical. Small differences in carbon content, manganese levels, impact testing requirements, and certification standards may exist. Therefore, when substituting materials, it is important to review technical datasheets, mechanical property requirements, and project specifications carefully.
From a procurement perspective, understanding worldwide equivalents allows buyers to expand sourcing options, reduce supply risks, and compare prices across different markets. It also helps suppliers communicate material alternatives more effectively to international customers.
In conclusion, ST37-2 has several well-established equivalent grades worldwide, including S235JR, ASTM A36, Q235B, and SS400. Knowing these equivalents enables buyers to make informed purchasing decisions while ensuring compliance with engineering and project requirements.