What are the most commonly used stainless steel grades? Stainless steel itself has a myriad of grades in which every one of them has different properties.

And with that being said, every grades of stainless steel are used in different settings and serves a different purposes in a variety of industries,

Without further ado, let’s dive down into the commonly used stainless steel grades on today’s article only at dimulti.id!

Commonly Used Stainless Steel Grades

1. Martensitic – 416

The first one is the martensitic stainless steel with 416 code.

Grade 416 stainless steel is the most machinable of all stainless steels, with an 85% machinability.

The grade 416 stainless steel is also available in a variety of forms such as highly tempered, hardened, or unhardened, making it versatile in a variety of uses.

But, unlike the austenitic steels, the 416 steel has less corrosive resistance, though the 416 grade is highly resistant to fresh water, acids and alkalis.

With those characteristics, the grade 416 is popular for application including automatic screw-machined components, gears, bolts, and washing machine parts.

Also Read: “The Difference Between Titanium and Stainless Steel“

2. Martensitic – 420

While not as chemically resistant as the austenitic and ferritic stainless steel, the 420 grade stainless steel still does have a good resistance to water, some alkalis and food compounds.

These traits make the grade 420 commonly used for kitchen cutlery.

The grade 420 also has an advantage with its high tensile strength which is of around 586 Mpa (85 ksi).

This tensile strength is also able to be increased, when the grade 420 stainless steel is hardened and stress relieved, its tensile strength can jump to roughly 1,586 MPa (230 ksi).

3. Ferritic – 409

The next one on our list of commonly used stainless steel grades is the grade 409 ferritic stainless steel.

The grade 409 stainless steel is well known for its ability to withstand extreme temperature and its heat resistant characteristic.

With that being said, it is an ideal choice for high-temperature applications such as car exhaust systems.

In addition to its heat-resistance, 409 is also easy to be welded and processed with general welding techniques.

This advantage facilitates production and assembly processes, making it a practical and efficient choice for a wide range of industrial applications.

4. Ferritic – 441

Stainless steel 441 offers a good level of corrosion resistance in a wide range of environments, especially under moderate atmospheric and humidity conditions. Although not as strong as austenitic stainless steel, 441 is still resistant to corrosion.

The main advantage of stainless steel 441 is its resistance to high temperatures. This makes it a good choice for applications that involve exposure to high temperatures, such as automobile exhaust systems.

Also Read: “Types of Stainless Steel“

5. Austenitic – 301

Grade 301 stainless steel contains additional chromium and nickel, providing outstanding corrosion resistance. It is strong and ductile when cold worked, making it ideal for a variety of applications that require welding, forming and drawing.

Because of these properties, grade 301 stainless steel is often used in the manufacture of components that require strength and corrosion resistance, such as in the automotive and home appliance industries.

6. Duplex – Lean

One of the main advantages of duplex lean stainless steel is its high level of corrosion resistance.

The combination of austenitic and ferritic structures provides resistance to pitting corrosion and crevice corrosion, making it suitable for environments containing chlorides or other aggressive compounds.

Lean duplex stainless steel has high mechanical strength, including good tensile strength and yield strength.

This makes it a good choice for applications that require significant structural strength.

There you have it! The 6 commonly used stainless steel grades!