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300 Series & 400 Series Stainless Steel

Electropolishing Stainless Steel

What types of Stainless Steel can be electropolished?

When it comes to electropolishing 300 series stainless steel and electropolishing 400 series stainless steel components and equipment, no one does it better than Electro-Max, Inc.

We specialize in providing superior electropolishing for all metals and metal alloys, and for all types of stainless steel, ensuring your parts are free of imperfections, easy to clean, work even better, last longer, resist corrosion, and gleam with a bright, chrome-like finish.

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Aerospace electropolished and passivated parts
Quality Materials

Stainless Steel Grades

Some materials such as 303, 416, 440c pose issues to the electropolishing process because of the chemical composition of the metal and high sulfur contents. Superior electropolishing must start with the material. Quality materials will generally yield great results. There are many variables that could render a part unable to be electropolished to a great result such as inclusions or contamination from any step of the manufacturing process such as heat-treating or annealing.

More than 95% of our business is working with stainless steel – including 200 series, 300 series, and 400 series stainless steel – so we have the expertise, experience, and equipment to deliver high-quality electropolishing for all kinds of stainless steel:

What are the different types of 200 Series Stainless Steel?

  • 201
  • 202
  • 203EZ

What are the different types of 300 Series Stainless Steel?

  • 301
  • 302
  • 303
  • 304
  • 305
  • 316
  • 321
  • 347
  • 304 Sintered
  • 318 (2205 Duplex)
  • 330 (cast)

What are the different types of 400 Series Stainless Steel?

  • 410
  • 416
  • 418
  • 420
  • 430
  • 440A
  • 440C
  • 446
  • 455
  • 465
  • 5-f (Like 416)

What are the different types of Grades for Precipitating Hardness Stainless Steel?

  • Grade 13-8
  • Grade 15-5
  • Grade 17-4
  • Grade 17-7
  • Grade 18-8

What are the other Grades of Stainless Steel?

  • A-286
  • 660
  • Nitronic 50
  • Nitronic 60
  • Gall Tough
  • 254 SMO
  • Sandvik (420)
  • AL-6XN



For more detailed information, check out the benefits of electropolishing, the electropolishing industries served, and learn more about what is electropolishing. For any questions you may have, contact us today!

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Industries Served for Electropolishing & Passivation Services

Electro-Max, Inc. is your go-to for all electropolishing services in a variety of industries! Certain industries need high levels of durability and corrosion resistance in their finished parts. Turn to Electro-Max, Inc. for first-class electropolishing and passivation services.

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