Why metal eyewear should use 304 stainless steel?

[Aoker eyewear]

In the eyewear industry, to ensure the top quality of metal eyewear, usually metal eyewear manufacture prefers to use 304 steel to make metal eyewear.

304 stainless steel is a common steel, the material density is 7.93 g/cm3, also named as 18/8 stainless steel, SUS 304. 304 stainless steel with better processing performance and good malleable and flexible characteristics, 304 stainless steel widely used in the metal eyewear productions lines and also the food and medical industries because it was called Food grade steel.


On the raw material market, 304 stainless steel usually marked 00Cr19Ni10, SUS304, and 304. Which 00Cr19Ni10 is the GB standard (China), 304 is the ASTM standard (US standard), SUS 304 is the JIS standard (Japan Standard).


As a reliable steel, it has good corrosion resistance, good heat and cold resistance(suitable temperature is between -196℃-800℃).


It is widely used in metal eyewear since it has really excellent processing performance when in heat treatment of die molding, bending and cut and engraving, hand polish processes. No work-hardened problem after heat treatment. In order to pursue top quality metal eyewear, metal eyewear suppliers shall use 304 stainless steel.

[Chris Ryser]

Eyeglass Frame Materials

By Erinn Morgan; review and contributions by master optician Mark Mattison-Shupnick


check it out at: ==============>
http://www.allaboutvision.com/eyegla..._materials.htm

[LisaRayes]

Stainless Steel 304 offer high strength and also extremely workable, with the ability to be deeply drawn into shape without the need for annealing, making 304 perfect for the manufacture of bowls, sinks, pans and a range of different medical vessels and hollow ware. For extremely corrosive environments, 304L also offers a greater resistance to intergranular corrosion, than similar grades of stainless.