SS314 SS310s 316 Stainless Steel Pipe Duplex 2205 SS Rectangular Pipe AISI

316 Stainless Steel Pipe SpecificationSS314 SS310s 316 Stainless Steel Pipe Duplex 2205 SS Rectangular Pipe AISI

The role of chromium in stainless steel

An increase of chromium content improves the corrosion resistance of stainless steel. The addition of nickel is used to raise the general corrosion resistance required in more aggressive usage or conditions. The presence of molybdenum (Mo) improves the localized corrosion resistance. Other alloy metals are also used to improve the structure and properties of stainless steel such as Titanium, Vanadium, and Copper. Non metal additions typically include natural elements such as Carbon and Nitrogen as well as Silicon. The S304 we use to make our stainless casters has 8.07% nickel (Ni) and 18.23% chromium (Cr).

The process of stamping and surface polishing can change the non-magnetic property of S304. The pressure used in stamping and forming changes the distribution of chemicals in the alloy. The stamping die used can also chemically leave iron ions on the surface of the stainless steel. Both factors can cause change to the non-magnetic property of the stainless and thus create magnetism! Foreign residue can also be corrosive.

We apply an electrocleaning surface treatment to our stainless caster models K3, 3, 3A, and 9. It does not necessarily prevent the stainless steel from picking up iron particles as the result of how it is handled or stored. We apply an additional passivation treatment only to our stainless caster model G15 using nitric or mild organic acids to enhance the protective nature of the natural, air-formed film. Nitric acid treatment enhances the level of chromium in the protective film on stainless steel. This passivation treatment also makes it easier to remove rust if it were to occur.