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Buy Wholesale AISI 304L Stainless Steel Coil For Your Business

Stainless steel is one of the alloys that has been famous for its versatility in many industries. Its main feature, which is corrosion resistance, makes it famous. Now, AISI 304L stainless steel coil material has different elements like iron, carbon, and Chromium.

Moreover, the alloy is the main base for kitchen accessories, architecture, and medical equipment. The interaction between the environment and its composition prevents corrosion.

Standard stainless steel has 10.5% Chromium and less than 1.2% Carbon. Other elements are added to this mixture depending on the desired enhancement.

With its wide usage, different grades have entered the market throughout the years. These grades also rose due to the unique demand composition for each industry or product. One of the most common grades is 304L stainless steel.

It also has “excellent corrosion resistance and value.” Which makes it famous around the world.

Yaoyi is an excellent supplier and manufacturer of 304L stainless steel coils. We have been producing excellent quality 304L stainless steel coils since 1996. 25 years of production and sales experience has given us a huge deposit of knowledge about stainless steel. When you ask for it, we can provide you with the best quality stainless steel coil solutions based on our experience.

AISI 304L Stainless Steel Coil

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Table of Contents

What is AISI 304L Stainless Steel?

AISI 304L is one of the grades of stainless steel that is globally manufactured. It has eight to 12% of Nickel, 18 to 20% of Chromium, 2% Manganese, 1% Silicon, and 0.03% Carbon. This grade is like the infamous 304 grade but with lower carbon composition. 

The carbon composition affects the steel’s resistance to corrosion. So, 304L’s lower carbon content helps “cut the carbide precipitation during welding.” Making it withstand even the severe corrosive environment.

Moreover, the L in 304L means “low carbon,” while the AISI only means American Iron and Steel Institute. Meaning, the AISI 304L stainless steel grade complies with the professional standard. 

  • We can provide 304L stainless steel with more than semi-hard strength.
  • It can be used in clamps, dentistry and other fields.
  • Thickness: 0.03mm~0.2mm


The ‘L’ in 304L stands for ‘Low Carbon.’ This variant of 304 stainless steel has lower carbon content, which helps in preventing sensitization during welding and other thermal processes.

How To Identify An AISI 304L Stainless Steel?

With its resemblance to other grades, AISI 304L can be mistaken for something else. So, you must know how to identify grade differences. To help you, here are the factors that you can look into to know which one is the AISI 304L stainless steel. 

1. Internal Structure

The AISI 304L grade of stainless steel is an austenitic T 300 series. Austenitic stainless steel has a high percentage of Chromium and Nickel, with a low-carbon mixture. These kinds of stainless steel are also known for their formability and durability. Thus, the austenitic type of steel is the most used grade out of all the others. 

2. Corrosion and Oxidation Resistance

The AISI 304L grade stainless steel has an exemplary corrosion-resistant feature. It can withstand even in a severe environment without getting any damage. With its 18% chromium component, AISI 304L can form a passive oxide layer to help protect the steel. 

The percentage of carbon also affects the resistance of AISI 304L to corrosion. During the welding process, there is a phenomenon that happens. It’s called “chrome carbide precipitation.” The chrome merges with the carbon. Then, lessens the zone that provides corrosion resistance. 

Thus, lesser carbon means the lesser risk for the combination of the two elements. Meanwhile, AISI 304L has moderate resistance to oxidation. 

3. Physical Properties

These physical properties are the considerations you have to make before its application. The AISI 304L has a density of 8.00 Kg/m3, which is 0.5 denser than the average grades. It also has thermal conductivity and electric resistivity of 16.2W/m.K and 0.072 x 10-6 Ω .m. 

Moreover, this grade manages 1450 degrees Celsius of temperature before melting. It also has a modulus of elasticity at 193 GPa. 

4. Chemical Composition

The last parts revealed that AISI 304L stainless steel has eight to 12% Nickel and 18 to 20% Chromium. There is also a lower Carbon percentage of 0.03% than 0.08% of the usual 304. A 2% Manganese, 1% Silicon, 0.015b)% Sulphur, and 0.10% Nitrogen are also present in the mixture. 

Moreso, there is a flat Iron in the composition of AISI 304L stainless steel. At the same time, there is 0.045% of Phosphorus. 

5. Mechanical Properties

The AISI 304L stainless steel exudes a tensile strength of 500 – 700 MPa. Proof stress of up to 200 Min MPa and an elongation of 45 Min%. These properties of stainless steel predict the capacity and usefulness of the material. Similarly, ISU-NDE also stated that “these properties help classify and identify the material.”

6. Weldability

Because of the lower carbon percentage present, the AISI 304L has excellent weldability. Even on the heavy welded section, post-weld annealing is not required. But, Grade 321 can be an alternative solution if the heat treatment is not working.

7. Workability

304L stainless steel type functions for most accessories and industries because of its composition.

8. Heat Treatment

In austenitic steel, the heat treatment helps extract cold and precipitated chromium carbides. But, AISI 304L stainless steel can’t be solidified through heat treatment. Instead, it requires rapid cooling after heating to 1010- 1120°C for post-treatment. 

What Type of Stainless Steel is Magnetic?

The Applications of AISI 304L Stainless Steel

AISI 304L has many applications because of its superb formability and durability. Various industries have also benefited from the features of this steel grade. This grade is versatile as it caters to home, commercial, automotive, and medical uses. Hence the popularity as well. 

To be more specific, the 304L stainless steel usages are the following: 

  • Various kitchen accessories like utensils, saucepans, cutlery, and flatware
  • Kitchen benches, sinks, troughs, equipment, and appliances
  • Architectural panellings and other designs
  • Sanitary wares 
  • Construction materials for buildings and houses 
  • Large and small chemical containers
  • Nuts, bolts, screws, and other fasteners
  • Medical and most surgical equipment
  • Food processing equipment 
  • Car, other automotive, and aerospace structural 

What Would Cause Stainless Steel To Rust?

Do Magnets Stick To AISI 304L?

stainless steel trim coil

As mentioned above, 304L is a type of austenitic steel. That consists of elements with non-magnetic properties. It is the only type of stainless steel that is not magnetic. All the other classes are susceptible to magnetic reactions. 

The austenitic stainless or the 300 series is non-magnetic, especially when newly formed. However, the 304 grades can be magnetic after pressing, cutting, and blasting. This change is because these grades could pick up foreign particles in such a process. 

With these particles, some structures might change. Hence the effect on the magnetic susceptibility of the alloy. But, if the stainless steel has more Nickel in its composition, it is unlikely to change. 

Which Stainless Steel is Most Corrosion Resistant?

What Is The Difference Between 304 And 304L Stainless Steel?

With tons of unique grades in the market, 304 and 304L stainless steel have the most similarity. There’s no significant difference between the two. Whereas their uniqueness can make or break your decision. Their chemical compositions are identical except for the percentage of carbon. Whereas 304 has 0.08 maximum while 304L has 0.03. 

Their difference plays an integral part in the corrosion resistance performance. The AISI 304L is less susceptible to rust or corrosion because of the little contrast. 

But, the 304 also has its mechanical composition advantage. The AISI 304L has a “slight, but noticeable, reduction in key mechanical performance.” The tensile strength of AISI 304L is lower than the standard 304. It is also the same with yield strength, but the change in this part is more unnoticeable. 

To sum it up, the dissimilarity of 304 and AISI 304L lies in the carbon percentage and the structure. 

Why Does Stainless Steel Rust?

When To Choose AISI 304L over 304?

stainless steel coil stock

While both grades are almost identical, they are still used for different purposes. People who need the alloy for commercial uses pick the 304 stainless steel. It can be for drink brewing, food processing, and the like. 

The standard grade can withstand chemical elements brought by various remnants. It is also easy to clean.

On the other hand, the 304L caters to industrial purposes. It can still be used for various commercial and home uses. Since it has a lower carbon percentage, its corrosion resistance is exemplary. Thus, it can hold out against low and high temp. 

AISI 304L’s application is to heat exchangers, chemical containers, and mining equipment.

To simplify, if you need a lot of welding, 304L is the perfect one. But, if you want more strength in the structure, you may opt to use the standard one. 

Stainless Steel 316 And 316L Graded By The AISI System

What is stainless steel coil stock?

ss 304l mechanical properties

Stainless steel coil stock refers to the supply of stainless steel in a roll or coil format, typically stored and sold to manufacturers or suppliers for use in various applications. AISI 304L Stainless Steel Coil, for instance, can be stored as coil stock and used as needed for manufacturing processes.

What is stainless steel trim coil?

Stainless steel trim coil refers to a thin, flat coil of stainless steel, which is often used for decorative trim or edging in various applications, including construction and manufacturing. The AISI 304L Stainless Steel Coil can be used in such applications, offering the benefits of its corrosion resistance and aesthetic appeal.

Is there a significant price difference between AISI 304 and AISI 304L Stainless Steel?

304l stainless steel

Generally, the prices of AISI 304 and 304L stainless steel are comparable. However, they may vary based on market factors such as raw material prices, supply-demand dynamics, and economic conditions. For the most current prices, it’s recommended to contact a reliable supplier or manufacturer.

What are the reliable AISI 304L stainless steel coil manufacturers?

304l stainless steel coil

There are many reputable manufacturers of AISI 304L Stainless Steel Coil worldwide. Here are a few of them

  1. Outokumpu: As a leading stainless steel manufacturer, Outokumpu boasts an impressive portfolio of stainless steel products, including the 304L grade. Known for their commitment to sustainability, they utilize recycled steel and have efficient production processes to reduce their environmental impact. Their extensive range and ability to customize make them a reliable choice for many businesses.

  2. ArcelorMittal: This company is well-known for its innovative approach to steel manufacturing. They offer high-quality AISI 304L Stainless Steel Coils, which have been utilized in various industries, including automotive, construction, and more. They have a strong reputation for delivering reliable and versatile steel solutions.

  3. Posco: Known for its focus on innovation and advanced manufacturing processes, Posco offers high-quality AISI 304L stainless steel coils. They are well-regarded for their rigorous quality control measures and commitment to customer satisfaction. Posco also provides tailored solutions to meet specific industry requirements.

  4. Jindal Stainless Ltd: This Indian company is known for its extensive range of stainless steel products. They offer AISI 304L Stainless Steel Coil in various thicknesses and finishes to suit diverse applications. Jindal has built a reputation for producing high-quality products while also maintaining competitive pricing.

  5. Thyssenkrupp: Known for its technical expertise and extensive materials knowledge, Thyssenkrupp offers a wide range of stainless steel products. Their AISI 304L Stainless Steel Coils are known for their consistency, high quality, and the company’s ability to deliver complex, customized solutions.

Remember, when choosing a manufacturer, it’s essential to consider not only the cost but also the quality of the products, their customer service, delivery times, and the ability to meet your specific requirements. Consider contacting these companies directly to discuss your needs and evaluate which one will be the best fit for your project.

What are the benefits of buying AISI 304L Stainless Steel Coil wholesale?

 Buying AISI 304L Stainless Steel Coil wholesale often provides benefits such as reduced price per unit, a wider selection of coil specifications, and the opportunity to negotiate custom orders or bulk discounts. It also provides a consistent supply for businesses with large-scale manufacturing needs.

In conclusion, AISI 304L Stainless Steel Coil is an incredibly versatile material with a wide range of applications.

How does AISI 304L Stainless Steel Coil compare with other stainless steel types?

AISI 304L is one of the most versatile and widely used stainless steel grades. Compared to other types, such as 316L, it may not offer the same level of molybdenum-induced corrosion resistance, but it is generally more cost-effective. Its low carbon content helps minimize carbide precipitation during welding, making it an excellent choice for welded applications.

Can you discuss the mechanical properties of AISI 304L Stainless Steel in more detail?

Sure. AISI 304L Stainless Steel offers high tensile strength and a commendable yield strength. The alloy also shows impressive toughness, even at cryogenic temperatures. Its low-temperature properties responding well to hardening by cold working, making it ideal for a range of industries.

What is the role of the manufacturer in the quality of AISI 304L Stainless Steel Coil?

The manufacturer plays a crucial role in ensuring the quality of AISI 304L Stainless Steel Coil. From sourcing raw materials to following strict manufacturing processes and quality checks, the manufacturer ensures that the final product meets the required standards and specifications. A reputable manufacturer will adhere to international standards and best practices to deliver high-quality coils.

Could you expand on the benefits of wholesale purchasing for AISI 304L Stainless Steel Coil?

Wholesale purchasing allows businesses to buy large quantities of AISI 304L Stainless Steel Coil at a lower cost per unit compared to retail prices. This method is ideal for businesses with large production needs, such as those in the automotive, construction, or appliance industries. Wholesale purchasing also fosters a steady business-to-business relationship, which can lead to better terms, such as faster delivery times or flexible payment options.

To conclude, the AISI 304L Stainless Steel Coil stands as a versatile, high-quality, and cost-effective choice in the world of stainless steel products.

What are the main wholesalers of AISI 304L Stainless Steel Coil?

Wholesale purchasing of AISI 304L Stainless Steel Coil can offer various advantages, including cost savings due to bulk purchasing, establishing long-term relationships with suppliers for consistent product quality and supply, and often more favorable payment and delivery terms. Let’s look at some reputable wholesalers in the stainless steel industry:

When considering a wholesaler for AISI 304L Stainless Steel Coil, you’ll want to consider the following aspects:

Pricing Structure: The advantage of wholesale purchasing comes from volume discounts. Ensure the wholesaler’s pricing structure fits your needs and that they offer significant savings for bulk orders.

Product Quality: Not all 304L stainless steel coils are created equal. Differences in the production process and source material can lead to variances in quality. It’s essential that your wholesaler maintains consistent high quality in their products.

Delivery and Logistics: Depending on the size of your order, delivering stainless steel coils might present logistical challenges. Your wholesaler should be able to work with you to ensure prompt and safe delivery.

Customer Service: A good wholesaler will offer robust customer service to help you resolve any issues that come up. Whether it’s a delay in delivery, a problem with the product, or a question about your invoice, you want to know you can get in touch with someone who will handle your concern efficiently and professionally.

Now, let’s take a closer look at the wholesalers we’ve mentioned:

  1. Metline Industries: Metline’s dedication to quality assurance means they work hard to provide the highest quality stainless steel coils. They offer flexible delivery options and have representatives available to help you navigate their product offerings.

  2. Eastern Suburbs Stainless: What sets Eastern Suburbs Stainless apart is their wide range of stainless steel products. Whether you’re in need of AISI 304L Stainless Steel Coil or another type of stainless steel, they’re likely to have what you need.

  3. Stainless Supply: Stainless Supply places a strong emphasis on customer service. They have a team of professionals ready to work with you to ensure you’re getting the best product for your specific needs.

  4. Alliance Steel: Alliance Steel prides itself on offering value-added services like coil processing. This can be a significant advantage if you require your stainless steel coils to be a specific size or shape.

  5. Rolled Metal Products: With a robust supply chain, Rolled Metal Products can reliably deliver high-quality products. They also offer a range of stainless steel types, making them a versatile choice.

Choosing a wholesaler is an important decision and should be made with careful consideration. It can have a significant impact on your operation’s efficiency and profitability. By understanding your needs and thoroughly researching potential wholesalers, you can find a partnership that supports your business’s growth and success.


There are various stainless steel grades in the market right now. Manufacturers around the world have been trying to develop and innovate. But, choosing the best kind might depend on what you need, as each of them serves a unique purpose. So, before you dive into the application of stainless steel, it is best to know its properties first. 

If you need to consult with someone trusted and well-acknowledged, Yaoyi can help you. They manufactured the best stainless steel in the market for more than two decades now. 

AISI 410 is just one of the many different grades stainless steel has. Each grade has its respective qualities. Understanding them is to optimize the possibilities for your application.

Why Does The Nickel Affect The Price of Stainless Steel?

Message from Kay Zhang
Yaoyi, a family-owned stainless steel manufacturer, with 28+ years of experience. Get the best solution for stainless steel coils with us.