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SD-6 Series:Including SD-6 series MgO products are moisture-proof magnesium oxide, ?which are mainly used for non-air heating elements (Such as copper tubes, aluminum tubes ,Bundy tubes or stainless steel tubes etc. with stronger convection and contact thermal transfer), and can satisfy different requirement. It is high moisture-proof, simply sealing is available. We suggest to dry the heating elements at 200?-350? before sealing.SD-99Series:Including SD-99 series MgO products are moisture-proof and high temperature resistant magnesium oxide, ?which are mainly used for air heating elements with different wattage loading, isn’t suitable for high-heat treatment(such as 1050? annealing),it has high moisture proof property, simply sealing is available. We suggest to dry the heating elements at 200?-350? before sealingmiddle temperature Mgo powderProduct Info?StyleSD-8 SD-6SD-3 SD-99 SD-99A M.S.M22SR33ST 44 5A 5AWorking temperatuer??1100?650?500?700?800Velocity of flow/Flow rate/DensityF.Density(g/c.c)2.33±0.032.33±0.032.20±0.042.30±0.032.30±0.03Static flow(s/100g)36±238±238±238±238±2F.R(s/100g)185±15185±15195±15200±15200±15US Standard Sieves(%retained)+40(425um)?0.1?0.1?0.2?0.1?0.1+60(250um)30±730±730±730±730±7+83(180um)20±620±620±620±620±6+140(106um)25±625±625±625±625±6+200(75um)10±510±510±510±510±5+325(45um)10±510±510±510±510±5-325(-45um)4±24±24±24±24±2Technical Chemical AnalysisMgO97±196±196±196±196±2CaO?0.86?1.4?1.4?1.4?1.1SiO2?1.2?1.5?1.5?1.5?1.1Fe2O3?0.26?0.3?0.3?0.3?0.26AI2O3?0.08?0.16?0.16?0.16?0.12Watt/sq cm?10?6?5?6?7
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