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artifical stone

artificial stone qualification:

  flatness  

   0.5%(max)

 thickness   

   +/-1mm

 

  air hole

 

   diameter:1.5mm/pc(max), 2pcs/M2(max)  

 

     impurity     

 

undistinctness by visual keep 1m distance

 

 desiccation and compressive strength

 

 70.9MPA(min)

 

water absorption       

 

    zero 0

 

  bending strength   

 

 43.5Mpa(min)

 

 volume  density 

 

   2.55G/CM3

 

  glossiness

 

  96

 

 mohs hardness

 

     6.0

 

acid fastness  

 

K:0.13%,appearance no change when dipping

                         in 1.0% vitriol for 650 hour

 

resistance to alkali 

 

 K:0.08%,appearance no change when dipping

                in 1.0% sodium hydroxide for 650 hour

 

  radioactivity 

 

 no radioactivity,suitable for class A decoration

 

201207140222016280.pdf

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