Many friends are not very familiar with the differentiation of stainless steel materials, especially the 40 series materials such as stainless steel 420. It is commonly believed to be stainless steel material, but in fact, stainless steel 420 belongs to the martensitic stainless steel series, commonly known as stainless iron material. Therefore, many friends search for the keyword "stainless steel 420 passivation solution" on web pages, while few search for "stainless iron 420 passivation solution." Below, Wu Zhan from Jiayimei will introduce the detailed classification of stainless steel materials.

Classification of Stainless Steel Materials: Stainless steel is categorized into austenitic stainless steel, martensitic stainless steel, and duplex stainless steel, among others. Austenitic stainless steel belongs to the 30 series stainless steel materials, while the 40 series materials are martensitic stainless steel, also known as stainless iron. So, how is stainless steel (iron) 420 passivation solution used and operated?

Overview of Martensitic Stainless Steel 420 Material: Martensitic stainless steel 420 material has a high carbon content and is very hard, making it widely used in blades, motor shafts, medical tweezers, and other applications. However, its rust resistance is relatively poor, so it requires passivation for rust prevention.

Introduction to Stainless Steel 420 Passivation Solution: Stainless steel 420 passivation solution is our company's flagship product, with its rust resistance and salt spray performance widely recognized. Passivation does not change the dimensions or original color of the workpiece and can withstand neutral salt spray testing for 780 hours without rusting.

Operation Method for Stainless Steel 420 Passivation Solution: Clean the oil stains from the surface of the 420 workpiece, then heat the passivation solution to 70 degrees Celsius and soak for 30 minutes. Afterward, remove the workpiece and rinse off any residual solution. Next, soak it in our company's stainless iron stabilizer for 15 minutes at a controlled temperature of 60 degrees Celsius. Then, remove the workpiece, clean off any residual solution, dry, and package. The operation is very straightforward. The passivation solution is environmentally friendly, free of substances like trivalent chromium, and has passed FDA food-grade certification and SGS environmental certification. It also passes the standard blue dot test, with no blue dot appearing within 35 seconds.

For customers who wish to learn more about passivation, welcome to contact Jiayimei Company for consultation and support. Mutual benefit and win-win.