Скачать или смотреть Why led underwater light use stainless steel?

Why Underwater Lights Use Stainless Steel?

If you've ever looked closely at outdoor lights, you might notice that housing of LED underwater lights are a bit different. Most outdoor lights housing use aluminum, but underwater lights go for stainless steel. Ever wonder why?

Today, let's explore the reasons:
Reason 1: Different Densities of the Metal Shell
Think of metals like iron, aluminum, and stainless steel. Iron is heavy at 7.8g/cm³, aluminum is lighter at 2.69g/cm³, and stainless steel sits in between, ranging from 7.75g/cm³ to 7.93g/cm³. Higher density means fewer gaps between molecules, making it harder for other stuff to get in. Aluminum, being light, can let water seep in if it's in water for a long time. On the other hand, stainless steel is three times denser than aluminum, making it great for keeping water out. Iron has a similar density to stainless steel, but it rusts easily. So, stainless steel is the go-to for underwater lights.

Reason 2: Handling Acids, Alkalis, and Oxidation
Underwater LED lights stay submerged and powered for a long time, dealing with acid, alkali, and oxidation. These things can speed up the corrosion of the metal casing, leading to water getting in and messing up the light. Stainless steel is awesome at resisting rust and corrosion, making it perfect for underwater use.

So, whether it's keeping water out or fighting off corrosion, stainless steel is the superhero material for underwater lights. If you've got more ideas, Welcome to share with us. Thanks for watching!