Bolts and nuts stainless steel hex

 

1. stainless steel hex bolts correctly select the strength grade (anti-fracture)

The strength of stainless steel bolts is usually lower than that of carbon steel (such as 304 A2-70 tensile strength 700MPa), and cannot be arbitrarily replaced with high-strength carbon steel bolts!

2. stainless steel hex bolts suggestions for using stainless steel bolts:

General fastening: A2-70 (304) is sufficient. Heavy load or vibration environment (such as automobile chassis, bridges): Choose A4-80 (316) or special high-strength stainless steel bolts. Overloading is strictly prohibited: Stainless steel has poor toughness, and overloading may cause brittle fracture.

3. stainless steel hex bolts surface cleaning and maintenance (rust prevention and life extension)

The rust prevention of stainless steel depends on the surface passivation film. If it is contaminated or scratched, it will still rust!

4. stainless steel hex bolts maintenance method:

Regular cleaning: Use a neutral detergent to remove salt, acid and alkali residues (especially at the seaside and chemical plants). Avoid scratches from hard objects: Use special tools during installation to prevent surface scratches. Passivation treatment: If rust spots appear on the surface, stainless steel passivation liquid can be used to restore the anti-rust layer.