properties

We engineer and produce complex industrial ceramic parts for our customers. 
On time, and on budget.

Tenacity Alumina 99% Alumina 95% Alumina 92% Alumina 75% Alumina Steatite Mullite Cordierite Zirconia
Composition 70%Al203 30%Zr02 99%AI2O3 95%AI2O3 92%AI2O3 75%AI2O3 MgO
SiO2
3AI2O3
2SiO2
2 MgO
2AI2O3
5SiO2
ZrO2
Material Properties Density g/cm3 4. 3 3.9 3.6 3. 5 3.2 2.8 3 2.5 6
WaterAbsorption % 0 0 0 0 0 0 0 0 0
Firing Temperature 1,600 1,700 1,680 1,650 1,430 1,350 1,300 1,350 1,600
Mechanical Propeties Hardness HV 2,000 1,700 1,500 1,400 1,000 800 1,000 800 1,300
Flexural Strength(4pt) Kgf/cm2 4,500 3,500 3,000 2,800 2,000 900 1,100 900 11,000
Compressive Strength Kgf/cm2 45,000 30,000 25,000 20,000 10,000 4,000 6,000 3,500 25,000
Rupture Tenacity Map • m3/2 5-6 4 3-4 3 -- -- -- -- 6-8
Thermal Properties Maxima Use Temperature 1,500 1,500 1,450 1,400 1,100 1,100 1,000 1,000 --
Thermal Expansion 0-1000℃ /℃ 8.0X10-5 8.0X10-5 8.0X10-5 7.8X10-5 6X10-5 6X10-5 6X10-5 4X10-5 9.5X10-5
Thermal Shock Resistance T(℃) 250 200 220 220 200 200 300 250 360
Thermal Conductivity W/m. k (25℃~300℃) -- 31.4
15.9
25
14
21.8
12.6
15
10
2.5
--
4.2
--
1.3
--
3
--
Electrical Properties Volume Resistivity 20℃ 100℃
300℃
>>.cm >1012
1012-1013
>1010
>1012
1012-1013
>1012
>1012
1012-1013
>1012
>1012
1012-1013
3.1X103
>1012
1012-1013
>103
>1012
1010-1012
5X103
>1012
1010-1012
--
>1012
107-108
3X105
>1012
--
5X109
Dielectric Strength KV/mm 18 18 18 16 15 10 10 10 --
Dielectric Constant (100 Mhz) (E) 10 10 9.5 9.4 8.3 5.8 6 6 --
Dielectric Dissipateic Dissipation Factor (tg δ) 0.4X 10-3 0.4X 10-3 0.4X 10-3 0.4X 10-3 0.4X 10-3 0.4X 10-3 0.4X 10-3 0.4X 10-3 --

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Commercial Roofing

Built-Up Flat Roof Installation

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After Storm Damage

Wood Shake Roof Repair

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Residential Roofing

Shingle Roof Replacement

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Commercial Roofing

Commercial Skylight Installation

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