What is DIN 17100 ST37-2 Steel Plate?

DIN 17100 ST37-2 steel plate is a widely used low-carbon structural steel originally specified under the German DIN 17100 standard. Known for its excellent weldability, formability, and cost-effectiveness, ST37-2 steel plate has been a popular choice for structural and engineering applications for decades. Although DIN 17100 has largely been replaced by modern European standards, ST37-2 steel plate remains a familiar grade in the global steel market and is still frequently referenced by buyers, engineers, and manufacturers.
The designation "ST37-2" has a specific meaning. "ST" stands for structural steel, while "37" refers to the approximate minimum tensile strength class of the material. The suffix "-2" indicates a particular quality level with improved impact properties compared to the basic ST37 grade. In modern European standards, ST37-2 steel plate is generally considered equivalent to S235JR under EN 10025.
One of the key advantages of ST37-2 steel plate is its low carbon content, typically around 0.17% to 0.20%. This composition provides excellent weldability and cold-forming characteristics, allowing the material to be easily cut, bent, drilled, and fabricated without special processing requirements. As a result, it is widely used in manufacturing and construction industries.
Mechanically, ST37-2 steel plate offers a minimum yield strength of approximately 235 MPa and a tensile strength ranging from 360 MPa to 510 MPa, depending on thickness and production conditions. These properties provide sufficient strength for many general structural applications while maintaining good ductility and toughness.
ST37-2 steel plate is commonly used in building structures, steel frames, bridges, machinery components, storage tanks, shipbuilding, transportation equipment, and industrial fabrication projects. Because of its versatility and affordability, it is often selected for projects where high-strength alloy steels are not required.
From a buyer's perspective, important factors to consider include material certification, dimensional tolerances, surface quality, and compliance with project specifications. Many international customers also request mill test certificates (MTCs) and third-party inspections to verify product quality before shipment.
In conclusion, DIN 17100 ST37-2 steel plate is a reliable and economical structural steel material with excellent fabrication properties and broad industrial applications. Its combination of good mechanical performance, easy processing, and global availability continues to make it a preferred choice for construction and engineering projects worldwide.