X-medics standard diameter tolerance is +/- 0.005 mm for smaller diameters and +/- 0.010 mm for larger wire diameters. X-medics’ tolerances are tighter than normal industry standards and optimized for advanced automated processing into e.g. tantalum pin markers.
Surgical unalloyed (pure) tantalum metal is available in two grades – R05200 (electron beam / vacuum arc melted) and R05400 (sintered). Tantalum UNS R05200 and Tantalum UNS R05400 are equally suitable for surgery. The two products have identical requirements concerning max metallic contents of e.g. niobium, iron, titanium, tungsten, nickel and molybdenum. The R05400 product are allowed a slight higher oxygen content. The mechanical properties are almost similar.
> Read more about tantalum specification.
Annealed vs Unannealed Wire
X-medics’ wire on spool is available in either annealed or unannealed conditions.. Annealed material is softer and more ductile and suitable for plastic deformation. Unannealed products on the other hand are suitable for machining operations like cutting, grinding, drilling etc.
Machining of tantalum with operations like turning and grinding is in general difficult. Lubrication medium is often required. Typically unannealed tantalum qualities are easier to machine than annealed metals. X-medics further offer unannealed straightened wire rods of tantalum, that may be easier to handle than material on spool.
> Read more about tantalum machining here
> Read more about unannealed tantalum rods here.