About Us Products Quality Clientele Enquiry Contact Cordierite Steatite High Alumina Grinding Media Custom Ceramic Shapes Formers Ferrules Heat Engg. Kiln Parts Refractory Shapes These are high rupturing capacity fuses in square and round shapes made with the most modern technique and are supplied to very close tolerances.   MATERIAL SPECIFICATION NORMAL PORCELAIN CORDIERITE PORCELAIN STEATITE Mechanical Properties Colour Cream White Off-white Specific Gravity 2.35 gm/cc 2.5 gm/cc 2.7 gm/cc Water Absorption Less than 1 % Less than 0.1 % 0.0 Compressive Strength 1500 kg/cm2 7000 kg/cm2 8500 kg/cm2 Flexural Strength 800 kg/cm2 2000 kg/cm2 1300 kg/cm2 Young's Modulus --- 150 x 103 0.9 kg/cm2 x 106 Hardness Mohs-Scale 6 - 6.5 6 - 6.5 7 - 8   Thermal Properties Co. off of Thermal Expansion 4 - 6.5 x 106/oK 5.7 x 106/oK 8.5 x 106/oK Thermal Shock Resistance 100oc 250oc 190oc Thermal Conductivity (20oc) 1.2 - 2.6 w/moK 6 - 8 w/moK 2.3 - 2.5 w/moK Maximum Withstanding Temp. --- 1000oc 1200oc Safely Use Temp. --- 800oc 1000oc   Electrical Properties Di-electric Strength 12 - 15 kv/mm 6 - 7 kv/mm 10 kv/mm Withstand Voltage >20 >20 >30 Surface Resistivity min --- 1010 1010 Vol. Resistivity @ 20oc --- --- 1013   Chemical Composition N.P. SiO2 62 - 63% 70 - 72% 62 - 63% AIO3 28 - 30% 20 - 22% 6 - 8% Fe2O3 0.75 - 0.85% 0.5% 0.75 - 0.80% FiO2 0.99% 1.2% 0.99% CaO 1.02% 1.5% 3.8% Mgo 0.90% 2.0 - 3.0% 20 - 21% Na2O 1.37% 0.9 - 1.0% 1.2% K2O 4.55% 0.9 - 1.0% 1.2% L.O.I. 0.26 0.18 ---     our objectives: Customer Satisfaction Services Punctuality © 2007 | All rights reserved AHMEDABAD PORCELIAN INDUSTRIES Home | About Us | Products | Clientele | Enquiry | Contact Us | Email   Designed by webplus