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When choosing SUS-304 or SUS-410 stainless steel screws, what must you consider?

Last updated: 20 Jun 2024
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สกรูสแตนเลส SUS-301 VS SUS-410 แตกต่างกันอย่างไร Difference between

Selection of stainless steel screws between grades SUS-304 and SUS-410 should be based on the following properties of each grade:

Corrosion resistance: 

  • SUS-304 has significantly better corrosion resistance than SUS-410, such as those installed on metal roofs that are often directly exposed to the outside environment. This may have high humidity, rain, or even salty vapors from the sea. (depending on installation location)


Rust protection:

  • SUS-304 It hardly rusts in normal environment and SUS-410 even is stainless steel. But it is more likely to rust compared to SUS-304, especially when exposed to moisture or chemicals.

Service life:
  • With better corrosion resistance than SUS-304, it usually has a longer service life. Especially in use outside the building.


Maintaining the condition of the installed metal pieces:

  • SUS-304 screws will not cause rust stains on the metal workpieces they are installed with, such as behind metal sheets or steel plates, which helps preserve the beauty of the workpieces better.


Strength:

  • SUS-410 is stronger than SUS-304, making it suitable for applications that require strength. In areas where there must be some contact with water droplets or humidity. or even installation on metal sheet roofs in areas with strong winds It is safer than using SUS-304 grade screws.


Material compatibility:

  • SUS-304 tends to be compatible with many metals used for metal roofing. Reduce the chance of chemical reactions between different metals (galvanic corrosion).


Conclution:

     Selecting SUS-304 grade screws for exterior installation work, such as metal sheet roofs or outdoor steel sheets would be a better option. Because of the importance of corrosion prevention and long service life. This is a more important factor than strength in this case. Resistance to the elements will help maintain both the beauty and structure of your roof better in the long run.

    While the job that requires a certain level of strength and is in a slightly humid area or is exposed to water spray occationally, the user may consider using SUS-410 grade screws rather than SUS-304, for example, for assembling parts of water pumps, valves, liquid pipeline systems, etc.

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