Trademark : FW-1 Formula : FW Appearance: Dark gray tungsten powder, light gray tungsten powder for spraying. Applications : Used for large slabs, rhenium tungsten thermocouple material, and contact alloys. Packing : Iron drum lined with double polyethylene bags. Net weight: 100kg or 200kg per drum. Physical properties Model Average size(um) Bulk density(g/cm3) Oxygen content not more than (%) 06 0.6-0.8 1.4-2.2 0.5 08 0.81-1.0 1.7-2.5 0.4 10 1.01-1.5 2.0-2.8 0.3 15 1.51-2.0 2.2-3.0 0.3 20 2.01-3.0 2.6-3.5 0.25 30 3.01-4.0 3.2-4.2 0.25 40 4.01-5.5 3.8-4.8 0.25 55 5.51-7.0 4.0-5.2 0.2 70 7.01-15.0 4.2-5.5 0.2 150 >15.0 4.5-6.5 0.1 Component Analysis (%) Main contents W: 99.95 Contents of other elements Fe 0.0050 Si 0.0020 Ca 0.0020 Al 0.0010 Mn 0.0010 Mg 0.0010 Ni 0.0030 Sb 0.0010 Cr 0.0010 As 0.0010 Pb 0.0001 Bi 0.0001 Sn 0.0003 Cu 0.0007 Mo 0.0050 K 0.0015 Na 0.0015 S 0.0010 P 0.0010 C 0.0050 - - Iron drum lined with double polyethylene bags.