Metal Finishing Guide Book

2013

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496 — BC B Ma BCMa BMa C BC B C B Zinc and alloys Aluminum and alloys Magnesium and alloys Nickel Silver Glass sealing nickelcobalt-iron alloys UNS No. K94610 M BC — CMa BCMa BMa M BCEd B Nonmetals Titanium BEa,b BCb CbMa B — B BCbEa,b — Cb Cb CbMa Autocatalytic Nickel Zinc B BC M B C B BC — C C CM B BC BM — BC B BC B BC BC BCM Cadmium Gold B B BM B B B B B B B BM B B BM — B B B B B B BM Palladium B B BM — B B B B B B BM Rhodium Silver B BC BM — BC B BC B BC BCEd BCM Tin B BC BM — BC B BC B BC BC BCM Lead B BC BCM BC BC B BC B BC BC BCM B = Beta backscatter; C = Coulometric; E = Eddy current; and M = Magnetic. a Method is sensitive to permeability variations of the coating. b Method is sensitive to variations in the phosphorus content of the coating. c Method is sensitive to alloy composition. d Method is sensitive to conductivity variations of the coating. Reprinted with permission from the ASTM Annual Book of Standards. ASTM B 569. Copyright ASTM, W. Conshocken, PA 19428-2959. B BMa C CMa C only on brass and Cu-Be Copper and alloys C C CMa CEd Nonmagnetic stainless steels CM CMa CM Magnetic steel (including corrosionresisting steel) Nickel Copper Substrate Chromium Table I. Applicability of Coating Thickness Measuring Methods Bc BcCc BaCcM Bc BE — BM BE E BE BcCc E BE BE BE BM Nonmetals Bc BcCc Bc BcCc BcCc BcCcM TinLead Alloys — — — E — — E — E E M Vitreous and Porcelain Enamels

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