What is the difference between stainless steel and mild steel | Stainless steel blog (2024)

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Interesting facts Marketing manager·February 3, 2021·comments from

Steel is an integral, classified and essential material in the development of the industrial world. Ranging from carbon steel to stainless steel, numerous types and grades are sourced all over the world. Mild steel belongs to one of a wide range. Iron is alloyed with carbon to form mild steel.

Chemical composition

Mild steel is basically steel with a low carbon content. It contains approximately 0.05% to 0.25% carbon by weight. It is basically non-alloy steel and does not contain chromium, molybdenum or any other alloying element. The chemical composition distinguishes its properties from alloy steel.

Physical Characteristics

Mild steel is tough, machinable and weldable. It can be easily cut, machined and shaped into various industrially oriented shapes. Mild steel is not strengthened by heat treatment. The absence of alloying elements makes it more susceptible to corrosion.

How is mild steel made?

The formation of mild steel involves a combination of iron ore and coal in the presence of lime and fused together in a blast furnace. Molten iron is then formed. Molten iron contains impurities and must be eradicated. Basic Oxygen Steel (BOS) and Electric Arc Furnace (EAF) are the two common alternative methods for burning impurities. This step is called primary steel production. Then the secondary steelmaking process begins, where adjustments are made to achieve the chemical composition of mild steel. Steel is then poured to solidify into the desired shapes. The mild steel plates are formed into various products by hot rolling or cold drawing.

USE OF MOLTEN STEEL

Carbon steel is positioned as the leading element in steel production. Mild steel has some impressive properties, such as high tensile strength and impact strength. Mild steel is widely used in various industries. It is the most common type of steel used.

Some common uses are as follows:

  • Construction – Mild steel is widely used in construction because it is economical to weld and machine. It can withstand shock loads and is widely used in construction, such as buildings and bridges.
  • Machine applications - such as car production. It is easily accessible for cutting and welding.
  • Knives – Carbon steel knives stay sharp longer and are easier to sharpen. Professional chefs prefer knives with a high carbon content because they require a lot of precision knife work in the kitchen.
  • Fencing - Mild steel can be adjusted to different shapes and provides visual appeal.
  • Pipelines, poles, wire and nails are commonly constructed from mild steel.

The difference between stainless steel and mild steel

Steel is the phenomenal term that is part of a wide variety of metal products. Stainless steel and mild steel are clearly distinguishable, as are their applications.

Alloy element

This is the most important characteristic to determine the factor. Stainless steel has chromium, nickel and molybdenum as alloying elements, while mild steel is alloyed with carbon. This base composition is responsible for creating the difference in corrosion resistance, weldability, cost, applications, etc.

Stainless steel

Chromium is the alloying element in stainless steel and reacts with oxygen in the atmosphere to form a protective layer called chromium oxide. This layer offers significant corrosion resistance. On the contrary, Mild Steel does not contain chromium. The iron content in mild steel reacts with moisture in the air to form iron oxide, which is essentially rust. Stainless steel offers significant resistance to corrosion, while mild steel does not, requiring an additional coating that prevents rust.Stainless steel is stronger than mild steel.

Hardness

Stainless steel exhibits more hardness than mild steel because stainless steel contains chromium and nickel.

Ductility

Ductility is the ability to undergo deformation with cracks. Mild steel has a low carbon content and is tougher than stainless steel.

Weldability

Mild steel is more weldable than stainless steel.

Magnetisering

Mild steel exhibits permanent magnetization as the iron content increases. Conversely, stainless steel is not characterized by the presence of a magnetic field.

production

Mild steel is easy to cut or bend, while stainless steel requires machinery and engineering.

Aesthetics

Stainless steel has more shine and visual appeal than mild steel.

Cleaning and maintenance

Stainless steel requires less maintenance than mild steel

Application

Mild steel is widely used in construction and automobiles. Due to its corrosion resistance, stainless steel is widely used in commercial food processing equipment, chemical storage and manufacturing, surgical equipment, marine use, etc.

To live

The service life is longer for stainless steel because mild steel corrodes easily without proper maintenance.

Cost

Cost is a major consideration when it comes to choosing between stainless steel and mild steel. The alloying elements, manufacturing process and skilled workers are required to produce stainless steel. On the other hand, mild steel is an economical metal.

In short, stainless steel and mild steel exhibit characteristic, unparalleled qualities. The type of steel to choose depends on comprehensive needs. At Ambica Steels, our technical solutions expert group is always ready for questions and consultation.

What is the difference between stainless steel and mild steel | Stainless steel blog (2024)

FAQs

What is the difference between stainless steel and mild steel | Stainless steel blog? ›

Stainless Steel provides considerable resistance towards corrosion, whereas Mild steel does not, it requires further coating preventing rust. Stainless steel is more strengthen than Mild steel. Stainless Steel exhibits more hardness than mild steel, as Stainless steel contains chromium and nickel.

What is the difference between mild steel and stainless steel? ›

Main alloying element

This is the main factor that distinguishes mild steel from stainless steel. Mild steel is alloyed using carbon whereas stainless steel has chromium as its alloying element. The 2 different alloys produce very different results in corrosion resistance, malleability and ease of fabrication and cost.

Is SS harder than MS? ›

Stainless steel is also fairly harder compared to mild steel. This is because stainless steel is resistant to water based corrosion. Unfortunately, this makes stainless steel less ductile. It is a lot more difficult to weld, unlike mild steel.

Does stainless steel last longer than mild steel? ›

If your project will be exposed to the elements, such as in outdoor furniture or marine applications, stainless steel is the better choice. Strength: Stainless steel is famous for its strength and durability, which generally exceeds that of mild steel. It's the best choice if strength is a priority in your project.

How to tell stainless steel from mild steel? ›

The main difference between the two is in iron content: mild steel is approximately 98% iron, and stainless steel usually contains approximately 90% of iron, depending on the grade. In fact, you're likely to differentiate them visually; one is dull with a matte finish, while the other is often polished and lustrous.

What is the main advantage of using stainless steel instead of mild steel? ›

Stainless Steel provides considerable resistance towards corrosion, whereas Mild steel does not, it requires further coating preventing rust. Stainless steel is more strengthen than Mild steel. Stainless Steel exhibits more hardness than mild steel, as Stainless steel contains chromium and nickel.

Is 304 stainless stronger than mild steel? ›

Stainless Steel is typically stronger than Mild Steel due to the alloy (chromium) it contains. That's why it is used to create objects that should withstand impactful force or frequent usage. Mild steel tensile strength is relatively lower but can undergo strengthening by adding carbon.

How much heavier is stainless steel than mild steel? ›

Stainless steel contains higher amounts of chromium and nickel, which makes it more corrosion-resistant and stronger than mild steel. However, these alloys also make stainless steel less dense than mild steel. On average, stainless steel weighs about 50% less than mild steel.

What is the hardest grade of stainless steel? ›

Type 440C: is the stainless steel that can be heat treated to the highest hardness of any of the stainless steels.

Is there anything better than stainless steel? ›

Carbon steel, on the other hand, has a matte finish and has a higher tensile strength and is harder than stainless steel. This material is used for knives and other bladed instruments that must maintain their cutting edge longer.

Is it better to drill stainless steel or mild steel? ›

In comparison to stainless steel, mild steel is more malleable and ductile, which makes it easier to drill into than stainless steel. When the drill bit is not drilled properly, despite the fact that it is softer, it can still blunt the drill bit.

How to identify mild steel? ›

Look for the dark gray or brownish surface color of carbon steel. Inspect the surface of the metal closely and take note of its color. Identify it as possibly being mild steel if the surface has a dark, dull tone. Keep in mind that freshly-engineered steel looks more bright gray and metallic, but darkens over time.

What is the cheap grade of stainless steel? ›

The cheapest grade of stainless steel is typically 409, which is commonly used in automotive exhaust systems.

What stainless steel has no nickel in it? ›

Martensitic Stainless grades are a group of stainless alloys made to be be corrosion resistant and harden-able (using heat treating). All martensitic grades are straightforward chromium steels without nickel.

Is 304 or 316 stainless better? ›

304 stainless steel vs 316

316 contains a minimum 2.0% molybdenum which makes it much more corrosion resistant than 304 however, as it is a more expensive element, generally makes 316 a more expensive grade of metal.

What's heavier stainless steel or mild steel? ›

Mild steel is much lighter than stainless steel, which is one of the main reasons it's so sought after. Using mild steel for any internal construction purposes is preferable and easier due to its lower weight, as it's also more efficient to transport in bulk, therefore saving on emissions and fuel costs.

How to tell the difference between stainless steel and steel? ›

For example, stainless steel is more burnished and lustrous than carbon steel. Carbon steel, on the other hand, has a more dull, matte finish. Another common way to tell the difference is to check to see if there are any signs of oxidation (red rust).

Will mild steel rust? ›

Mild steel is very reactive and will readily revert back to iron oxide (rust) in the presence of water, oxygen and ions. The readiness of steel to oxidize on exterior exposure means that it must be adequately protected from the elements in order to meet and exceed its design life.

Is mild steel more expensive than stainless steel? ›

Stainless steel is generally considered a more expensive option compared to mild steel due to its superior properties and higher quality. The process of manufacturing stainless steel involves adding chromium and other alloying elements to iron, making it corrosion-resistant, durable, and heat-treatable.

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