Stainless Steel Grade 302

Stainless steel is one of the most adaptable materials. It finds its application in many sectors, providing corrosion resistance and durability. Stainless Steel Grade 302, or UNS S30200, is a prominent type of Stainless Steel. It is time for us to look at the constitution of SS 302, chemical compositions, mechanical and physical properties, common uses, welding capabilities, and end-use applications.


Stainless steel grade 302 lies in the group of austenitic stainless steels. It has high corrosion resistance and flexibility.

SS 302 Chemical Composition

The chemical composition of Stainless Steel Grade 302 determines the behavioral features of this steel. It comprises iron, chromium, nickel, and a bit of carbon. It consists of :

  • 18% Cr,
  • 9% Ni,
  • 0.15% C.

These are essential aspects that contribute to the steel’s corrosiveness and strength.

SS 302 Mechanical Properties

The mechanical properties of Stainless Steel Grade 302 determine its applications.

  • Tensile strength of about 515-620 megapascals (MPa).
  • It has a yield strength of about 205 MPa.

They enable the steel alloy to endure various mechanical stresses and pressures. They make it apt for multiple applications in many environments.

SS 302 Physical Properties

Stainless steel grade 302 has other physical properties besides mechanical characteristics.

  • The density is above 7.9 g/cm^{3 }and can play a role if weight is essential in an application.
  • It has a high melting point and remains strong at elevated temperatures.

Stainless Steel Grade 302 Uses

The Stainless Steel Grade 302 finds its applications across many industries.

  • This material has high tensile strength. It is apt for making engineering items such as springs, fasteners, and wires.
  • Grade SS302 has good corrosion resistance. It is apt for corrosive environments. It finds its application in the chemical industry and petrochemical industry.

302 Stainless Steel Welding

Weldability is an essential property of stainless steel. Grade 302 has good welding qualities. Standard welding techniques like arc welding can weld this. Using the proper welding methods is vital to preserving corrosion resistance. 

Stainless Steel Grade 302 Applications

Stainless Steel Grade 302 has various applications across different sectors.

  1. Medical Devices: SS 302 is the main component of some medical instruments and tools as it exhibits biocompatibility and resistance against corrosion.
  2. Automotive Components: Given its strength and durability, it can make springs, fasteners, etc., in vehicles.
  3. Aerospace Industry: The strength and corrosion resistance make it suitable for aerospace applications.
  4. Chemical Processing: Chemical equipment is prone to corrosion. Grade 302 stainless steel is corrosion-resistant, making it the best fit for this equipment.
  5. Food and Beverage Industry: Stainless steel grade 302 is ideal for food processing equipment because it doesn't rust easily.


In summary, Stainless Steel Grade 302 (UNS S30200) is an extraordinary substance boasting a harmonious chemical, mechanical, and physical blend. Its extensive utilization in many sectors is a testament to its invaluable role in contemporary production. Whether employed in medical instruments, automotive constituents, aerospace advancements, or chemical processing domains, Grade 302 consistently demonstrates its trustworthiness and adaptability within various challenging settings.