1、 Firstly, let's understand the basic components of stainless steel. Stainless steel is an alloy based on iron, with alloying elements including chromium, nickel, carbon, titanium, etc.

Chromium is the key to preventing stainless steel from rusting. It can form a protective self-healing oxide film on the surface of stainless steel.

So many times, we commonly use chrome plating, zinc plating, or nickel plating when choosing surface treatment, and of course, zinc plating and nickel plating are more commonly chosen.

2、 Secondly, according to the microstructure, it can be divided into martensitic stainless steel (400 series stainless steel, the main alloying element of which is chromium and does not contain nickel, and the overall corrosion resistance is not as good as austenitic stainless steel, with magnetism), ferritic stainless steel, austenitic stainless steel (3 series and 2 series stainless steel, the main alloying elements are chromium and nickel, mostly without magnetism, slightly magnetic after cold working, with similar mechanical and physical properties. This type of stainless steel can be hardened by cold working, but cannot be hardened by heat treatment. Among them, 304 stainless steel is widely used, accounting for about 50% of the total stainless steel production), and duplex stainless steel (austenitic and ferritic duplex).

440C material is selected. 440C is a high carbon and high chromium martensitic stainless steel with excellent strength and hardness, as well as good corrosion resistance. The stainless steel linear guide is passivated before leaving the factory to make its surface more corrosion-resistant and less prone to rusting.

However, under specific conditions such as high temperature, high humidity, strong acid or strong alkali, the possibility of rusting cannot be completely ruled out.

So in order to extend the service life of stainless steel guide rails, there are several aspects that need to be noted:

Regular cleaning: Clean the dirt on the surface of stainless steel linear guides to reduce the risk of corrosion and rusting;

Regular inspection: Check the surface of the guide rail for scratches, dents, or other damages and promptly address them.

Regular maintenance: Apply rust proof oil to the surface of stainless steel guide rails to reduce the risk of corrosion;