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Buy Wholesale AISI 302 Stainless Steel Coil For Your Business

Yaoyi Aisi 302 stainless steel coil is produced from high-quality hot rolled coils. Their main raw material supplier is Baosteel (the largest steel company in the world). Whether it is the medical industry or the machining industry, our Aisi 302 stainless steel can be customized with different hardness, width and thickness according to your needs. It is an unconventional austenitic stainless steel, if you need to purchase it, please contact us, we are willing to provide you with the best solution.

302 stainless steel coil

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Material Testing After You Place An 302 Stainless Steel Coil Order

Hardness Testing
Ingredient detection
Tensile Strength Test

Packaging Of 302 Stainless Steel coil

YAOYI’s Packaging Specifications

FOCUSED ON THE 0.03 ~ 0.4 Mm 301 302 304 316 Stainless Steel coil

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Aisi 302 Stainless Steel: The Ultimate FAQ Guide

Stainless steel has been around for a century and as time continues to pass by, lots of consumers and businesses have been purchasing stainless steel for their needs. This led to an increase in demand for stainless steel.

But with so many steel grades out there, it is difficult to choose which one is suited for your project, especially if you have little to no knowledge about what type of stainless steel is the one for you.

With the help of the experts from YAOYI, you will learn and understand the fundamentals of stainless steel and everything you need to know about the AISI 302.

Table of Contents

What does AISI mean in Steel?

The meaning of “AISI” in AISI 302 refers to the organization, American Iron and Steel Institute. This organization helped standardize the numbering system for steel with the collaboration of the Society of Automotive Engineering or SAE.

Stainless Steel Applications

What is Aisi 302 Stainless Steel?

AISI 302 is a stainless steel that belongs to the austenitic stainless steel classification. In general, AISI 302 is the higher carbon version of AISI 304 and opposite of AISI 304 2B. We will go through its differences in another section.

For AISI 302, It is formulated for wrought products.

Wrought products or wrought metal is considered “worked” metal, which is metal that has great formability that can be shaped into rods, sheets, plates, bars, etc.

Afterward, they are mechanically processed into a specific shape or form. The AISI 302 is the perfect material for this job because it can have the lowest ductility and low amount of embodied energy among wrought austenitic stainless steel.

Stainless Steel Clothes Dryer

What is Austenitic Stainless?

The most common classification for steel is Austenitic stainless steel. Its demand is higher compared to other stainless steel classifications in the market. This is because of the superior protective resistance it is composed of.

Austenitic stainless steel has a chemical composition of high amounts of Chromium and Nickel. Moreover, it can not be heated or heat treated. The AISI 302 is austenitic stainless steel. 

Other Classifications of Stainless Steel

There are several classifications of stainless steel in the market. Let us discuss each one specifically so that you will have a better understanding.

A better understanding of other stainless steel classifications and steel grades will help you make the right purchase decision.

Martensitic Stainless Steel

Martensitic stainless steel is one of the classifications of steel that is known for containing high amounts of carbon. Its amount of carbon surpasses the amount of carbon austenitic steel has. This results in lower corrosion resistance in exchange for strong hardenability.

Additionally,  martensitic stainless steel has a risk of experiencing chromium carbide precipitation during welding due to its components

What is Carbide Precipitation?

Carbide precipitation is something that austenitic and martensitic steel experiences when their chrome and carbon are drawn out of the steel and react to the atmosphere. This only happens when temperatures reach between 26 and 760 degrees C.

So when welding, it must be kept in temperatures below 800 degrees to avoid chromium carbide precipitation.

Ferritic Stainless Steel

Ferritic stainless steel is known for its amazing magnetic properties. Yes, austenitic has magnetic properties as well, but compared to the ferritic stainless steel, it is just stronger. When it comes to molecular grain structure and its chemical composition, the difference is very noticeable as well.

This goes to show that ferritic stainless steel is designed to withstand certain applications that other steel classifications cannot handle.

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Aisi 302 Stainless Steel Mechanical Properties

302 vs 304 stainless steel price

Stainless steel contains numerous mechanical properties. It is very overwhelming for a beginner to read it but to better understand its mechanical properties, we defined each property in a simple manner.

So that you can easily understand what each property is for and what its function is.

For a comparison of the mechanical properties of other steel grades, you may check here in YAOYI’s Mechanical Properties Chart.

AISI 302 Tensile Strength

Tensile strength refers to the maximum load steel can withstand without breaking, showing damage, or being stretched. When the stress is removed from the steel, it is expected that the steel returns to its original shape and size.

In terms of tensile strength, the 302 stainless steel has a tensile strength of 89,900 psi (per square inch), which is more than the tensile strength of the AISI 321.

AISI 302 Yield Strength

Yield strength is the measurement of how much steel can handle stress before deformation, stretching, or damage occurs.

The 302 stainless steel has a yield strength of 39.900 psi. This amount of yield strength is superb for withstanding stress.


Elongation refers to how much stainless steel can stretch from its original length, and elongation is rated through percentage. The higher the amount, the more flexible it is. The 302 stainless steel has an elongation rate of 55%.

Hardness – Brinell

Hardness Brinell follows the Brinell Scale which classifies the indentation hardness of steel through scaling penetration of an indenter. This is a common definition of hardness in material science that applies to stainless steel.

The 302 stainless steel has a hardness of 147. This rate is almost as hard as strong martensitic steel.

Izod Impact

Izod impact is the moving energy or kinetic energy required to generate a fracture. This process continues until the steel is broken. These are often nerfed to prevent deformation when it impacts.

The 302 ss has an impressive Izod impact of 20-136 J m-1

Modulus of Elasticity

Modulus of elastic or an elastic modulus is a measurement of an object’s resistance to being deformed elastically when a certain amount of stress is being applied. The AISI 302 has an elasticity of 190-210 GPa.

Application Of Stainless Steel In The Oil And Gas Industry

302 Stainless Steel Physical Properties

The AISI 302 physical properties are composed of the following: 

  • Melting Point = 1400 – 1420 °C
  • Density = 7.92 g cm


Aisi 302 Stainless Steel Chemical Composition

Aisi 302 Stainless Steel Chemical Composition

When it comes to the chemical composition, here you will find the protective elements that give the 302 Stainless Steel its resistance to corrosion. 

You can also compare it with other steel grades by checking YAOYI’s Chemical Composition Table of steel grades.

AISI 302’s main components are  Chromium (17% – 19%) and Nickel (8% – 10%)

The rest of its elements can be found bellow:

Manganese = 2%

Silicon = 1%

Carbon = 0.15%

Sulfur = 0.03%

Phosphorus = 0.045%


Aisi 302 Stainless Steel Electrical Properties

AISI 302 stainless steel coil

Electrical resistivity 

This measures how stainless steel resists electric current. This is to check how strong a steel is when it conducts electricity. Low resistivity indicates that the steel is susceptible to electric current. The main electrical property of 302 Stainless Steel is its electrical resistivity, which is 70-72 ( µOhmcm )

What is the use of stainless steel in construction?

302 ss Thermal Properties

Thermal Expansion ( 20°C – 100°C ) 

The AISI 302 has a thermal expansion of 15-18 ( x10-6 K-1 )

Thermal Conductivity ( 23°C )

The AISI 302 has a thermal conductivity of 16.3 ( W m-1 K-1 )

Below are commonly asked questions from people and companies who are interested about purchasing that 302 Stainless Steel but are not yet sure of.

For you not to be a part of that group, we encourage you to not hesitate and ask for professional help from YAOYI.

Why do you Purchase the Stainless Steel Flat from Yaoyi ?

  • We can provide 430 stainless steel with more than semi-hard strength.
  • It can be used in Sinks, Scientific Apparatuses and other fields.
  • Thickness: 0.1mm~0.5mm

Is AISI 302 Better than AISI 304?

As aforementioned, the AISI 302 is the higher carbon version of AISI 304. So, is it better?

If you are looking for stronger stainless steel, the 302 Stainless Steel is tougher than the 304. However, when it comes to resistance, the AISI 304 has better content. The choice depends on how you are planning to use the stainless steel.

For big projects, such as constructions, the AISI 302 is fit for those types of projects. But for environments that are exposed to chemicals, then the AISI 304 is the better choice.

FOCUSED ON THE 0.03 ~ 0.05 mm Stainless Steel Foil

Is 302 Stainless Steel Good for Outdoors?

AISI 302 stainless steel strip

Yes, the 302 Stainless Steel has superb heat resistance and it is durable. It can take high temperatures and a beating. So, you do not have to worry about your stainless steel getting beat up outdoors. We highly recommend it if your project is set outdoors.

Study Stainless Steel Technical Made Simple: A Step-by-Step Guide

Does AISI 302 Rust?

The AISI 302 is designed to have moderate corrosion resistance. It is weak in chemically-exposed temperatures, which is why we do not recommend this steel grade to be used in laboratories, near shores, etc.

4 Common Methods for Welding Stainless Steel Pipe

Is 302 ss Magnetic?

No, AISI 302 is non-magnetic when it is in its annealed condition. But if applied with cold working, it becomes magnetic. 302 Stainless Steel is capable of resisting corrosion in many environments. Its corrosion properties are quite similar with the AISI 304 and 304L. 

A complete guide to SUS 304 stainless steel

Can 302 Stainless Steel Handle Heat?

AISI 302 is capable of withstanding high temperatures of heat. This is great for projects that are exposed or used outdoors. It has moderate corrosion resistance as well so you do not have to keep an eye on it.

As mentioned, it is durable and it can withstand a beating.

Comparison of Stainless Steel Standards in Different Countries

Advantages and Disadvantages of 302 ss

In this section, you will learn the advantages and disadvantages the AISI 302 brings. This will greatly help you with your purchase decision.

First, let’s start with the advantages:

Advantages AISI 302

Below are the key advantages of using the AISI 302


A lot of consumers and companies are concerned with corrosion when it comes to steel. For the AISI 302, you have little to worry about corrosion since it is designed to withstand it. It may not have the best resistance but it certainly gets the job done.

The AISI 302 can have a strong corrosion resistance even for years! So, if corrosion is a concern, you have nothing to worry about it in the AISI 302.


When it comes to oxidation, the AISI 302 does a decent job as well. This keeps you from constantly worrying about your stainless steel’s condition. With a little maintenance, and proper care the AISI 302 is built to live long.

High-temperature Endurance

The AISI 302 is without a doubt, a superb choice for heat endurance as it can survive extreme temperatures. The AISI 302 has no problem with our shifting climate and weather, so that is not a problem as well.


It was mentioned that the 302 Stainless Steel is tough due to its high carbon chemical composition. It can adjust to shifting temperatures and even handle extreme ones without melting. Seeing it break down is not something you would see when using the 302 Stainless Steel.

This is why the AISI 302 is good for long-term projects.

Food Grade

Surprised? Indeed, the 302 Stainless Steel is food-grade because it is resistant to solvents, specific acids, and chemicals as well. Although not commonly used in the food industry, the 302 Stainless Steel is found in springform with machines used in kitchens, hospitals, businesses, and other commercial industries

Disadvantages of AISI 302

Below are the major drawbacks of the 302 Stainless Steel, these are the elements that you should reconsider if one of these does not fit your project’s foundation.

Weak in Environments with High-Level Exposure to Chloride

The element chlorine is capable of rusting AISI 304 and 304 2B with ease, this is because its chemical composition cannot withstand chlorine, resulting in rust and pitting. The same goes for the AISI 302 since it has moderate resistance only.

Difficult to Machine

AISI 302 may be easy to form but due to its hardenability, it makes it quite hard to machine compared to other steel grades. This is because of their rapid hardening rate.

Food Grade

One of the product’s main attributes is that it is resistant to solvents, acids, and chemicals. Grade 302 stainless steel is frequently found in spring form within machines used in kitchens, food processing businesses, medical settings, and dairies.

Comparison of Stainless Steel Standards in Different Countries

Where to Get 302 Stainless Steel?

Not only does YAOYI offer the best deals, but also prioritizes customer satisfaction and convenient services. YAOYI has various steel grades as well for you to choose from. In terms of purchasing the 302 Stainless Steel, YAOYI offers cheap quotes and low-cost installments for the best experience!

How to Clean Rust From Stainless Steel?

Could you provide an introduction to 302 Stainless Steel?

AISI 302 Stainless Steel is an austenitic stainless steel characterized by its high work hardening rate and superior corrosion resistance. It’s known for its excellent mechanical properties and is commonly used in spring applications due to its high yield strength. AISI 302 Stainless Steel is available in many forms, including coil, making it a versatile material for various industries.

Can you discuss the mechanical properties of AISI 302 Stainless Steel, focusing on its strength and durability?

AISI 302 Stainless Steel is well-regarded for its exceptional mechanical properties. It offers high tensile strength and outstanding durability, attributed to its austenitic structure. When formed into a coil, AISI 302 Stainless Steel maintains these properties, proving ideal for applications requiring strength and reliability.

Can AISI 302 Stainless Steel handle heat? How does heat treatment impact finished parts?

Yes, AISI 302 Stainless Steel exhibits excellent heat resistance. Heat treatment can further enhance this property, particularly through hardening processes. However, it’s important to note that when AISI 302 Stainless Steel coil undergoes heat treatment, it should be rapidly cooled to maintain its mechanical properties and corrosion resistance.

Why is material testing important when purchasing AISI 302 Stainless Steel Coil?

Material testing is crucial to ensure that the AISI 302 Stainless Steel coil you purchase meets the required specifications and quality standards. It helps verify the mechanical properties, chemical composition, and heat treatment response, ensuring the material’s suitability for your specific application.

Can you elaborate on the high-temperature endurance and weaknesses of AISI 302 Stainless Steel in chloride-heavy environments?

AISI 302 Stainless Steel exhibits commendable high-temperature endurance, making it suitable for various heat-intensive applications. However, while it offers impressive corrosion resistance, it might show weakness in environments heavily laden with chlorides, leading to localized corrosive attacks like pitting or crevice corrosion. For chloride-rich environments, a higher alloyed stainless steel may be a more appropriate choice.

Can you explain the chemical composition of AISI 302 Stainless Steel and why it matters?

AISI 302 Stainless Steel primarily consists of iron, chromium, and nickel. Chromium imparts excellent corrosion resistance, while nickel aids in enhancing ductility. The precise chemical composition is vital as it directly influences the material’s mechanical properties, corrosion resistance, and heat treatment response.

What are the tensile strength and hardness values of AISI 302 Stainless Steel, and what do these numbers mean?

The tensile strength of AISI 302 Stainless Steel refers to the maximum amount of tensile (pulling) stress that it can bear before breaking or failing. This value is typically high for AISI 302, denoting its superior durability. Hardness, often measured on the Brinell scale for metals, indicates the material’s resistance to indentation or scratching. A high hardness value means AISI 302 Stainless Steel can withstand wear and tear effectively.

How do I choose the right AISI 302 Stainless Steel Coil for my needs?

When choosing AISI 302 Stainless Steel Coil, consider the requirements of your specific application. This involves the mechanical properties needed, the environment it will be used in, and the coil’s dimensions. Consulting with a reputable supplier or expert in the field can also be beneficial in making the right choice.

Can you discuss the advantages and disadvantages of AISI 302 Stainless Steel?

AISI 302 Stainless Steel offers several advantages, such as excellent mechanical properties, superior corrosion resistance, and high heat resistance. Its ability to be formed into a variety of shapes, including coils, also adds to its versatility. However, one potential disadvantage is its reduced performance in chloride-heavy environments.

Could you share more on Alloy Wire International and how to choose the right wire form profile?

Alloy Wire International is a well-known manufacturer and supplier of a variety of wire products, including AISI 302 Stainless Steel. They offer wires in a range of form profiles, sizes, and conditions. The right wire form profile depends on your project’s needs – whether it be for strength, flexibility, conductivity, or corrosion resistance. Discussing your needs with their technical team would help you make the right selection.

Could you delve into the hardness Brinell and tensile strength/hardness values for AISI 302 Stainless Steel?

Hardness Brinell is a measure of a material’s resistance to indentation, usually done using a steel ball for metals like AISI 302 Stainless Steel. A high Brinell hardness number (BHN) signifies a high resistance to indentation and wear. For AISI 302 Stainless Steel, both these values are high, indicating its remarkable strength and durability.

What are the mechanical and electrical properties of AISI 302 Stainless Steel that people need to know about?

From a mechanical perspective, AISI 302 Stainless Steel offers high tensile strength and hardness, making it highly resistant to wear and tear. It also has a good yield strength, essential for applications requiring deformability without breakage. Electrically, AISI 302 Stainless Steel is not a good conductor compared to pure metals like copper. However, it can be used in applications where electrical conductivity is not a priority, and other properties like strength, heat resistance, and corrosion resistance are more important.

why is AISI 302 Stainless Steel a smart choice for projects?

AISI 302 Stainless Steel is a versatile, high-strength, and durable material that exhibits excellent corrosion and heat resistance. These features make it highly suitable for various industrial and engineering applications, including those requiring high-performance coils. By choosing AISI 302 Stainless Steel coil for your projects, you’re opting for a material that combines reliability, functionality, and longevity.

Could you expand on the importance of mechanical properties like strength and durability in the context of AISI 302 Stainless Steel coil?

Mechanical properties like strength and durability are critical for AISI 302 Stainless Steel coil because they define how the material behaves under various types of stress. For example, high tensile strength means the material can withstand significant stretching forces without breaking. Similarly, durability refers to how long the material can retain its original properties under prolonged use and varying environmental conditions. These characteristics are vital for applications in industries like construction, automotive, and aerospace, where materials often need to withstand high stress and harsh environments.

Can you expand on the high-temperature endurance of AISI 302 Stainless Steel coil and its weaknesses in chloride-heavy environments?

AISI 302 Stainless Steel coil can endure high temperatures because of its high melting point and ability to maintain its mechanical properties at elevated temperatures. This makes it a suitable material for applications involving heat, such as in automotive engines or industrial furnaces. However, in chloride-heavy environments, like those found in marine or coastal settings, AISI 302 Stainless Steel coil can be susceptible to a form of corrosion known as pitting, which can lead to the formation of small holes in the material.

What should buyers know about the chemical composition of AISI 302 Stainless Steel coil?

AISI 302 Stainless Steel coil primarily consists of iron, with chromium and nickel as the main alloying elements. Chromium gives the material its remarkable corrosion resistance, while nickel enhances its mechanical properties. It’s crucial for buyers to understand this composition because it directly influences the material’s performance in various applications.

how can Alloy Wire International help customers choose the right AISI 302 Stainless Steel coil for their needs?

Alloy Wire International provides customers with expert guidance and a wide variety of options to ensure they choose the most suitable AISI 302 Stainless Steel coil for their specific requirements. They offer various forms, sizes, and conditions of the material, allowing customers to find the perfect fit for their applications. Furthermore, their technical team can provide detailed information about each option, helping customers make an informed decision.


In conclusion, if you are looking for stainless steel that is tough and high in carbon, then the 302 Stainless Steel is no mistake of a choice. Its mechanical properties provide absolute solidness and its chemical properties give off the right amount of protective resistance for extended longevity.

Should you have any further questions or concerns, YAOYI would be happy to accommodate them immediately.

How do you care 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.