Kawamura Glass Mfg.Co., LTD
JAPAN
E mail: info@kawamuraglass.co.jp
–1FSteel ball (225g) is dropped in the center of a 30cmx30cm examination object.@
–2FAfter heating the material 10cm~10cm,dip into the water at 20Ž
The specification of GEM GLASS TILE
‡@ Specific gravity 2.5
‡A Specific heat 0.2cal /gŽi0`50Žj
‡B Expansion coefficient 8.5`9.0~10-6 /Ž
‡C Thermal conductivity 0.86kcal /mEhrEŽ
‡D Compression intensity 6,000kgf /cm2 over
‡E Tensile intensity 500kgf /cm2
‡F Weathering resistance No change
‡G Bending strength t4mm : 500kg f /cm2
t8mm : 500kg f /cm2
‡H Steel ball drop test t4mm Non-Tempered:@ 80cmi–1j
t4mm Tempered:@150cmi–1j

t8mm Non-Tempered:@120cmi–1j
t8mm Tempered:@150cmi–1j
‡I Thermal shock test t4mm Non-Tempered:@ 70Ži–2j
t4mm Tempered:@170Ži–2j
‡J Chemical durability 5“NaOH@No change (24hrsERoom temperature)
5“HCL@@No change (24hrsERoom temperature)
‡K Water absorption 0
‡L Wind pressure-proof intensity t4mm@@@600kgf
t8mm@@2,000kgf
‡M Hardness 6Mohs