A.

BS and KS can be distinguished according to the steel type and thickness of raw materials.

KS stipulates in KS D 3698 that the stainless steel plates stipulated in the Korean industrial standards prescribed by the state,

and KS products shall be made of STS 304 or equivalent, and the standard thickness shall be stainless steel of at least 0.6 mm or more.


※The tolerances of thickness stipulated in the Korean industry standard are as follows.

A.

magnetism may occur depending on the steel type of stainless steel.

Stainless steel is not magnetic to austenitic (SUS300 series) with high nickel (Ni) content.

However, ferrite and martensitic systems with little nickel content are magnetic.



AUSTENITIC STAINLESS STEEL ATTACHED TO MAGNETS.


Magnetism occurs in the process of manufacturing stainless steel of the austenitic system (SUS300 series) or post-processing,

but there is no magnetism in the steel (valet or ingot casting) process during the manufacturing process.

In other words, stainless steel in a molten and cast state is magnetic, but if it is not heat-treated in a rolling process, which is a plastic process,

or if it is turned, pulled, or machined after rolling, it becomes magnetic due to processing hardening.



Baekjo’s sink bowl uses austenitic SUS304 stainless steel.

The properties of the raw material may be changed by press processing, resulting in fine magnetism.

Q. Does stainless steel also rust?

A. Stainless steel is not a rust-proof metal

Stainless steel is made to prevent rust by adding a significant amount of chromium (usually 12% or more) to iron (Fe), and can be seen as alloy steel with complex components containing small amounts of carbon (C), nickel (Ni), silicon (Si), manganese (Mn), and Moribden (Mo) as needed.

The etymology of Stain + Less means no dirt.

In other words, it was named to mean “a metal that is difficult to rust.”

Therefore, stainless steel can also rust due to the external environment

Q. Then, what is an external environment that causes rust?

A. ① Chemicals (hydrochloric acid, sulfuric acid, lactic acid, etc.)

② When using drain cleaner

③ Where residues, such as dirt, food stains, kitchen detergents, etc., are continuously present in stainless steel

Corrosion on the bottom of the sink, decomposition of the drain, corrosion due to CI-

※ CI- : Chlorine

Water leakage can occur due to loose tightening screws, for old corroded drain fitting.

Make sure that the area connected to the drain body is locked well and firmly.

If the water leakage occurs again, please change the drain fitting immediately.

For a clean and hygienic kitchen environment,

we recommend that you replace the drain regularly every 6 to 12 months.