A36 Steel

A36 steel is a standard structural steel grade specified by ASTM for its strength, weldability, and versatility. It is a low-carbon, hot-rolled steel that is commonly used in construction and fabrication. Known for its consistent performance and affordability, it is one of the most commonly used structural steel grades in the United States. It typically has a rough, mill-scale surface due to the hot-rolling process. It is available in a broad range of shapes and thicknesses to meet just about any project requirement.

When it comes to what this type of steel is made of, A36 is classified as a low-carbon steel, which plays a big role in how it’s used and how it performs. With a maximum carbon content of 0.26%, this grade is easier to weld and shape than higher-carbon alternatives. It also includes manganese, phosphorus, and sulfur in controlled amounts, each contributing to the steel’s overall strength and machinability.

Here’s a quick breakdown of A36 steel’s composition:

• Minimum Yield Strength: 36,000 psi
• Tensile Strength: 58,000–80,000 psi (typical range)‍
• Density: 0.284 lb/in³‍
• Melting Point: ~2,600°F (1,427°C)