What is Mild Steel? How to prevent corrosion of mild steel?


Mild Steel is low-carbon type of steel, commonly used in construction. It is an alloy, created by combination of iron and carbon and it has been used for centuries in various production as tools, automatives and even buildings. Let’s take a closer look at What is Mild Steel? How to prevent corrosion of mild steel? And why it has become so popular.

What is Mild steel?

Mild steel is an alloy composed mostly of iron and carbon. It also contains small amount of manganese, phosphorus, sulfur, and silicon. This combination makes it highly malleable and ductile while still maintain its strength and hardness. Its low cost makes it ideal for many projects that require structural integrity without breaking the bank.

Composition of Mild Steel

Mild steel has long been a staple material in the manufacturing industry due to its versatility and strength. Its composition is primarily made up of iron and carbon, with a maximum limit of 0.25% carbon content. Low carbon allows for superior weldability and formability compared to other high carbon steels. However, the disadvantage of its low carbon content is that mild steel is not as hard as other steels and can be susceptible to corrosion.

Properties of Mild Steel

Mild Steel is known for its strength and durability. It also has good weldability and machinability, making it easy to fabricate into different shapes and sizes. It is ideal for use in many industries, such as aerospace, construction, and automotive manufacturing. The durability of Mild Steel also means that it can be used to create structures withstand heavy loads or harsh weather conditions.

Another benefit of Mild Steel is cost effectiveness compared to other metals. Because Mild Steel contains fewer alloys, its price per pound tends to be lower than other materials like stainless steel or aluminium. This makes it an attractive option for those looking for a budget-friendly solution without sacrificing quality or performance.

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Melting point of mild steel

Mild steel is a popular choice for buildings and structural elements, due largely to its malleability and durability. But what really sets it apart from other materials is its high melting point of 1350oC-1530oC (2462oF-2786oF). It become the ideal material for applications that require strength in areas exposed to high temperatures. It also excels as a construction material in areas prone to fires since it will take longer to melt than other metals and offers better protection against flames.

Versatility of Mild Steel

Mild Steel also stands out from other due to its versatility; given its malleability, it can be bent into almost any shape desired without compromising its structural integrity or durability. This makes it perfect for creating custom parts for various purposes, such as furniture frames, automotive parts, pipes, etc., where the desired shape cannot be achieved through traditional means such as cutting or welding. For this reason, Mild Steel is highly sought after by both industrial companies and everyday consumers

Uses of Mild Steel


Mild steel is one of the most popular materials used in construction. It is strong and durable, making it an ideal choice for a variety of applications, such as beams, columns, and support structures.


Mild steel is also often used in the construction of machinery. Its strength and durability make it an ideal material for a variety of components, such as gears, shafts, and bearings.

Automotive Applications

Mild steel is also commonly used in the automotive industry. Its properties make it an ideal material for a number of applications, such as body panels, frames, and suspension components.


Mild steel is often used in the construction of pipelines. Its resistance to corrosion makes it an ideal material for transporting a variety of liquids, including oil and gas.

Storage Tanks

Mild steel is also commonly used in the construction of storage tanks. Its resistance to corrosion and its strength make it an ideal material for storing a variety of liquids, including water and chemicals.

Pressure Vessels

Mild steel is also often used in the construction of pressure vessels. Its resistance to high temperatures and pressures makes it an ideal material for containing a variety of liquids and gases under extreme conditions.

Electrical Applications

Mild steel is also sometimes used in electrical applications. Its conductivity makes it an ideal material for electrical wiring and other components that need to carry an electrical current.

Welding Rods

Mild steel is also commonly used as a welding rod. Its properties make it an ideal material for welding, as it can be easily joined to other metals without requiring too much heat.

Products of Mild Steel

Welding Rods & Bushings

Two popular products made from mild steel are welding rods and bushings. Welding rods are used in welding processes to join two pieces of metal together using extreme heat (above 800°C) to melt the metals together, creating a solid bond between them after cooling down again. Bushings are used in machinery as bearings because they possess excellent mechanical properties that enable them to withstand high loads while spinning smoothly at low speeds with little friction required by other types of bearings.

Mild steel pipe

Mild steel pipe has a variety of uses and applications in both industrial and residential settings. Not only does mild steel pipe last for years with proper maintenance, but it is often less expensive and easier to handle than other materials. Mild steel pipe is highly customizable, as it can easily be conformed to any shape or design for even the most complex projects. Additionally, its resistance to rust, general wear and tear, and extreme temperatures makes it a very reliable material for many uses. For these reasons, mild steel pipe continues to be one of the most dependable metals used in construction today.

Mild steel sheets

Mild steel sheets, or MS sheets, are durable and low-cost, making them one of the most popular types of steel alloys. They are often used for construction, vehicle manufacturing, and other industrial applications. MS sheets have excellent strength-to-weight ratios, which makes them ideal for a range of structural or mechanical projects that require a light but strong material. The weathering properties of these sheets make them resistant to oxidation and surface corrosion. Furthermore, mild steel does not become brittle in extreme temperatures. Due to their durability and cost-effectiveness, mild steel sheets remain a top choice among metalworking professionals.

Mild steel angle bars

Mild steel angle bars are a widely used type of construction material due to their unique capability to be molded into different sizes, shapes, and thicknesses. They offer versatility in construction as well as providing strength and stability to structures. With a mild steel angle bar, there is also the option of galvanized coating, which increases its corrosion resistance, significantly extending the lifespan of the material. Mild Steel Angle Bars provide an economical solution that can be used for various applications such as framework and bracing for machinery, buildings, transportation components, posts, and poles. Their tough structure gives them impressive strength and durability, thus making it one of the most sought-after construction materials in the market today.

Benefits of Mild Steel

Mild steel has some tremendous advantages over other metals, such as aluminum or stainless steel. It is much less expensive than its counterparts which makes it ideal for large projects that require significant amounts of material but have tight budgets. Additionally, mild steel can be welded easily, which means that even complex projects can be completed quickly with minimal effort. Finally, mild steel is highly resistant to wear and tear, which means it can handle tough conditions without breaking down or becoming damaged easily.

How to prevent corrosion of Mild Steel

Use Coatings

One of the most effective ways to prevent corrosion of mild steel is to apply coatings such as paint or powder coatings. Layers create a barrier between the metal surface and the environment, preventing moisture and oxygen from coming into contact with the metal. The type of coating that you choose will depend on the specific application of your project. You may opt for a powder coating if durability and longevity are important. If aesthetics is important or the project is indoors, paint may be a better choice.

Control the Environment

Corrosion is accelerated in environments with high humidity and moisture. One way to prevent decay is to control the setting where the mild steel is located. This can be done by ensuring proper ventilation, installing dehumidifiers, and keeping the metal dry. If the project is outdoors, consider using covers to protect the mild steel from rain and snow.

Galvanize the Mild Steel

Galvanizing is another effective way to prevent the corrosion of mild steel. This involves coating the mild steel with a layer of zinc, which acts as a sacrificial anode. The zinc will corrode instead of the mild steel, protecting it from degradation. Galvanizing is often used for outdoor applications such as fences, guardrails, and light poles. It is important to note that galvanized mild steel should not be welded because it can release toxic fumes.

Use Stainless Steel Instead

If you need a material that is more resistant to corrosion, you may opt for stainless steel instead. Stainless steel has a higher chromium content, making it more rust and corrosion-resistant. However, it can be more expensive than mild steel, so it may not always be the most cost-effective solution.

Regular Maintenance

Regular maintenance and cleaning can go a long way in preventing the corrosion of mild steel. This involves removing dirt, grime, and other debris that can accumulate on the surface of the metal, leading to decay. Gentle cleaners and solvents can be used to remove surface contaminants. Harsh chemicals and abrasive cleaners should be avoided as they can damage the metal surface.


Preventing corrosion of mild steel is not always easy, but it is essential to maintaining the integrity and longevity of your projects. By using coatings, controlling the environment, galvanizing the mild steel, opting for stainless steel, and conducting regular maintenance, you can protect your benign steel investments from corrosion for years.

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