A Alumina KA 13 ASIA/0012-R04/0201 page 1 of 1 Alcoa Product ALCOA WORLD ALUMINA – AUSTRALIA Product Information KA13 is a medium soda, medium surface area alumina produced at the Kwinana refinery. It is a coarse, sandy alumina with low chemical impurities. Applications Tabular alumina Fused alumina Typical Properties of KA13 Calcined Alumina Chemical Analyses wt % Al2 O3 Na2 O SiO2 Fe2 O3 CaO Particle Size (cumulative) % on 100 mesh (150 µm) % on 325 mesh (45 µm) Physical Analyses Surface Area (BET) m /g Alpha Alumina (%) 2 Shipping Limits 99.0 min 0.30 max 0.030 max 0.030 max 0.070 max Typical Range 99.6 - 99.7 0.13 - 0.21 0.014 - 0.023 0.010 - 0.014 0.044 - 0.050 (2) 14 max 85 min 1–7 92 – 98 20 max 15 – 19 65 – 75 1) Approximately 2 standard deviations around the mean. 2) Electroform Screens Information presented herein is believed to be accurate and reliable but is not intended to meet any specification and does not imply any guarantee or warranty by Alcoa. a Alcoa World Alumina - Australia Cnr Davy and Marmion Streets, Booragoon, Western Australia 6154, Australia Postal Address: P.O. Box 252, Applecross W.A. 6153, Australia Phone:+61 8 9316 5111, Fax: +61 8 9316 5228 (1)