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            Skip navigation Accessibility information

            Custom-made Ceramic
            and Glass Components

            Shapal?Hi-M soft Analysis

            Comparison of Shapal™-M soft with Shapal™ Hi-M soft and traditional ceramics

            This information is provided to help existing users of Shapal™-M soft compare it with the new Shapal™ Hi-M soft material and also to help users of traditional ceramics evaluate this machinable ceramic for their application.

            Comparison of flexural strengths and thermal conductivities (Typical Data)

            Data Supplied by Tokuyama Corporation, Tokyo, Japan

            Impurities

            Element Shapal™-M soft Shapal™ Hi-M soft
             C  300ppm 300ppm
            Ca 450ppm 1300ppm
            Cr 60ppm 1ppm
            Mg 15ppm 1ppm
            Ni <5ppm 2ppm
            Fe 20ppm 8ppm
            Si <15ppm 40ppm
            O 0.5% 0.9%
            Ti <1 <20
            Property/Test Conditions Shapal™-M soft Shapal™ Hi-M soft Units
            GENERAL      
            Density Corrected to 4°C 2.88 2.88 g/cm³
            Porosity 25°C 0 0 %
            ELECTRICAL      
            Volume Resistivity 25°C, DC 1.4 x 1012 1.0 x 1015 Ωcm 
            Dissipation Factor (tan δ) 25°C, 1MHz 9.1 x 10-4 10 x 10-4  
            Dielectric Constant (ε) 25°C, 1MHz 6.9 6.8  
            Dielectric Strength
            56 65 kV/mm
            THERMAL      
            Thermal Expansion Coefficient RT~400°C 4.4 x 10-6 4.8 x 10-6 /°C
            Thermal Expansion Coefficient RT~600°C 4.8 x 10-6 4.9 x 10-6 /°C
            Thermal Expansion Coefficient RT~800°C 5.1 x 10-6 5.0 x 10-6 /°C
            Thermal Conductivity 25°C 96 92 W/mK
            Maximum Use Temp. (in air) 1,000 1,000 °C
            Maximum Use Temp (in nonoxidizing atmosphere) 1,900 1,900 °C
            Thermal Shock Resistance ∆t water quench 400 400 °C
            MECHANICAL      
            Bending Strength 25°C 273 300 MPa 
            Compressive Strength 25°C 120 100 kg/mm2
            Young's Modulus 25°C 1.9 x 104 1.8 x 104 kg/mm2
            Poisson's Ratio 25°C 0.31 0.31  
            Vickers Hardness (Hv) 25°C, 300g 390 380 kg/mm2
            CHEMICAL DURABILITY      
            Resistance to Acid 10%HCI 24Hrs, 25°C 0.2 0.2 mg/cm2 wt loss
            Resistance to Base 10%NaOH 24Hrs, 25°C 60 60 mg/cm2 wt loss

            Note:  Shapal™ is a registered trademark of Tokuyama Corporation, Tokyo, Japan

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