Rods 4mm and up. Smaller sizes are typically listed in Round Wire.
Nitinol Shape Memory Rod; 5mm diameter; Af40-60°C (104-140°F); up to 1 meter long
Gd Rod - Gadolinium metal rod; 100mm x 3mm diameter; 5.2g each; 4N 99.99 Pure
Gadolinium metal wire; 2mm diameter
Ti-6Al-4V • Titanium Alloy Gr5 Rod; 3.0-6.0 mm diameter; up to 72" long