Stainless steel screw users often reflect, why stainless steel fasteners sometimes lock the problem, and in the use of carbon steel fasteners do not often occur similar phenomenon, is it not stainless steel fasteners material more soft, carbon steel fasteners relatively hard reason? That's right! Stainless steel is essentially different from carbon steel. Stainless steel has good ductility, but its hardness is different from carbon steel. However, this statement is only half right. Suzhou Olympic exhibition to tell you years of experience.
On fasteners made of aluminum alloy and titanium alloy, the metal alloys themselves are rustproof, which can produce a thin layer of oxidation layer on the surface of the metal to prevent further corrosion.
When the stainless steel screw is locked, the pressure and heat generated between the teeth will destroy and erase the chromic oxide layer between the teeth, resulting in blocking/shearing of the metal teeth, and the phenomenon of adhesion. When the phenomenon of adhesion continues to occur (usually no more than a full circle of tooth diameter), the stainless steel fastener will be completely locked, can no longer be removed or locked. Usually this series of blocking, shearing, sticking and locking actions take place in just a few seconds. Therefore, understanding the characteristics of stainless steel products and following proper procedures are the first step to prevent the locking of stainless steel fasteners.