350 Grade Mild Steel Plate

Mild Steel Plate is a piece of flattened steel made from low carbon steel. 350 grade plate is a medium strength structural Steel Plate with 350 megapascals (MPa) yield strength. The yield strength represents how much stress or pressure can be applied to the material before it begins to change shape.

What Is Mild Steel Plate?

Steel is mostly composed of iron. Depending on different amounts of carbon content, there are low-carbon steel (also called mild steel or plain carbon steel), medium-carbon steel, and higher carbon steel.

The following chart shows the differences and characteristics of the three steel types:

From the above chart, mild steel is a steel type that contains 0.05%-0.25% carbon. Due to its malleability and ductility, the material is easy to form and machine. Mild steel parts are generally very suitable for stamping, forging. Mild steel is widely used in tools, automotive body parts, construction, and infrastructure.

Mechanical Properties Of Mild Steel

As you could judge from the chart above, mild steel has lower carbon content than other carbon steel. The mild steel has a mere carbon content of 0.25%.

Mild steel has great impact strength, great ductility and weldability, good malleability with cold-forming possibilities. With these properties, CNC-machining mild steel is easier than CNC-machining other types of steel.

The major disadvantage of mild steel is that it has a relatively low tensile strength, which means it’ll break more easily than other types of steel.

Fortunately, a heat-treatment process called carburizing can be used to improve tensile strength. Carburizing is a surface-hardening process that heats the mild steel to a certain temperature then cools down the steel, which makes the steel hardened on the surface when keeping the core of the steel soft and ductile.