U-Orthodontic-Ss-Wires-(Round)-Stainless-Steel-Arch-Wire: - -Stainless-steel-arch-wire-used-through-the-entire-treatment-,-but-are-best-suited-for-mid-to-late-stages-of-treatment.Orthodontic-archwires-may-be-fabricated-from-several-alloys,-most-commonly-stainless-steel,-nickel-titanium-alloy-(NiTi),-and-beta-titanium-alloy-(composed-primarily-of-titanium-and-molybdenum).A-special-alloy-in-the-arch-wire-provides-maximum-spring-while-minimizing-fracturing.

 They-also-had-better-formability-and-can-be-readily-used-to-be-soldered-and-welded-for-fabrication-of-complex-orthodontic-appliances. The-stainless-steel-alloys-are-of-"18-8"-austenitic-type-which-contain Chromium (17-25%)-and Nickel (8-25%)-and Carbon-(1-2%). Chromium in-this-stainless-steel-alloy-forms-a-thin-oxide-layer-which-blocks-the-diffusion-of oxygen into-the-alloy-and-allow-for-the-corrosion-resistance-of-this-alloy.