Deviation in
lenth
Deviation in thickness
Deviation in squareness
Deviation in wedging
Deviation in flatness
Water absorption
Resistance to scratch on MOH's scale
Resistance to abrasion
Chemical resistance
Bending strength
Crasing
|
+ 0.5%
+ 0.5%
+ 0.6%
+ 0.5%
+ 0.5%
> 10%
min 3
Resitance to all
acids alkalineexcept
hydrofluoric acid
>150 Kg/Cm2
1 - Cycle
|
+ 0.2%
+ 0.3%
+ 0.2%
+ 0.2%
+ 0.3%
14 -16%
min 3
PEA Group ll
Resistance to all
acids alkalineexcept
hydrofluoric acid
180 to 200 Kg/cm2
No crazing at 3 - Cycle |