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DATE

2017.08.16

TAGE
304 Stainless Steel versus 316 Stainless Steel

What is stainless steel? You might assume that stainless steel never stains. The answer is wrong. Like standard steel, stainless can get marked up by fingerprints and grease, develop discoloration, and eventually rust. All steels have the same basic iron and carbon composition, but stainless steel also contains a healthy dose of chromium-the alloy that gives stainless steel its famous corrosion resistance. There are multiple grades under the stainless steel umbrella, each with slightly different composition, and therefore slightly different physical characteristics.

Stainless steel must contain at least 10.5 percent chromium. Dependent on the grade, it may contain much higher chromium levels, and additional alloying ingredients like molybdenum, nickel, titanium, aluminum, copper, nitrogen, phosphorous and selenium.

The two most common stainless steel grades are 304 and 316. The key difference is the addition of molybdenum, an alloy which drastically enhances corrosion resistance, especially for more saline or chloride-exposed environments. 316 stainless steel contains molybdenum, but 304 does not. 304 is an economical and practical choice for most environments, but it doesn’t have the chloride resistance of 316. The slightly higher price point of 316 is well worth it in areas with high chloride exposure, especially the coast and heavy salted roadways.

In wet or humid conditions iron reacts with the oxygen contained in water to form iron oxide, also known as rust. What about stainless steel? The secret is Chromium. Stainless steel has the innate ability to form a passive layer that prevents corrosion. The higher the chromium content, the faster the barrier repairs itself.

Once oxidized, or passivized, stainless steel typically rusts at a very low rate of less than 0.002 inches per year. When kept in its best condition, stainless steel offers clean and bright surfaces ideal for many building and landscape designs.

The addition increases corrosion resistance, particularly against chlorides and other industrial solvents.

316 stainless steel is commonly used in many industrial applications, as well as high-saline environments such as coastal regions and outdoor areas where de-icing salts are common.

The ultimate benefits of stainless steel include a long service life that will retain an attractive, clean finish. Properly cared for and cleaned stainless steels present a low maintenance cost.

In the right time to choose the right pool lights.

·Embedded LED pool light                                             

·LED panel fully resin filled                                

·Electrolyzed stainless steel lamp body, better anti-corrosion performance 

·Tempered glass lens                                    

·Plastic niche                                                        

·Working temperature: -20℃ ~ +45℃

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