The deterioration can happen in minutes, e.g. Always check with the producer of the material. RE: 304, 304L versus 316 in corrosion resistance against Nitric Acid unclesyd (Materials) 29 Aug 04 13:39. The table below must be used with care. concentrated hydrochloric acid spilled on skin; or slowly over days or years, e.g. We have a lot of experince with respect to use and corrosion of s/s 316 in our nitric acid plant.I advise to use s/s 304L and in severe conditions nitric acid grade (with low c,p,s). Acid corrosion is a chemically straightforward process that is used for selective removal of silver. When they come in contact with a surface, the surface deteriorates. Effect of Inhibitors in Fuming Nitric Acid On Corrosion and Oxidation TIN BOO YEE. PubMed. Fortunately, there are materials that provide resistance to oxidizers. • The concept of passivity was proposed as the mecha-nism of corrosion resistance for mild steel and high car-bon steel with increase in exposure time for the environ-ments investigated. TIN BOO YEE Search for other works by this author on: This Site. The corrosion data in this section is mainly based on the results of general corrosion laboratory tests, which are not strictly comparable with actual service conditions.The corrosion tables provide an initial guide to the selection of materials and are intended to facilitate understanding of the different types of corrosion damage that can arise due to poor material selection. Iso Corrosion Curves: Hastelloy C22 ; Hastelloy C276 ; Nitric acid is an oxidizing chemical, which makes it particularly difficult to handle. Remember that corrosion is a complicated issue, depending on the combinations of materials and the fluids, the fluid temperatures, the surrounding environment and the galvanic currents in constructions. Zirconium, Hastelloy B series alloys, and in high concentrations, even Hastelloy C276 will experience corrosion failure in the presence of a strong oxidizer like nitric acid. Under reprocessing conditions, those metallic materials are in contact with highly corrosive nitric acid and the understanding of corrosion of those materials is crucial for the reprocessing facilities stakeholders and represents challenging issues for scientists . Nitric Acid is a highly corrosive mineral acid. acid, and perchloric acid; nitric acid being most corrosive, followed by perchloric acid, and lastly, hydrochloric acid. the rusting of iron in a bridge. The most common method for dealloying with acid alone involves immersing the sample in concentrated nitric acid (69% HNO 3) for a specified period of time. It is colorless in appearance similar to water but older samples happen to acquire a yellow color of different shades depending on its decomposition into oxides of nitrogen inside water or due to dissolution of nitrogen dioxide in to the water. They can be acids, oxidizers, or bases. Google Scholar The word corrosive refers to any chemical that will dissolve the structure of an object. A look at the following website concerning the use of Zirconium in HNO3 service.