Tungsten Boat - Al2O3 barrier, 5/8" x 1-3/4" trough
4" L x 1" W (101.6 x 25.4mm), trough: 5/8" W x 1-3/4" L (15.9 x 44.5mm) x 3/32" (2.4mm) deep.
Tungsten thickness: 0.010" (0.25mm)
Al2O3 = 0.010" (0.25mm) coating
Settings: 1.43V/264A/378W for 1200°C