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Description of ASTM-E157 1994ASTM E157-88-Reapproved1994Withdrawn Standard: Practice for Assigning Crystallographic Phase Designations in Metallic Systems (Withdrawn 1999)ASTM E157Scope 1.1 This practice covers the assignment of designations for all alloy phases, based on the composition and crystal structure of each. 1.2 The practice makes possible the selection of a unique designation for each phase, except that in some cases an arbitrary lower case letter is used as described in 3.4 and 3.5. 1.3 The same designation shall be used for a given phase regardless of the system in which it appears (single component, binary, ternary, or polynary). 1.4 A procedure for selecting a temporary designation is also provided to cover those cases in which not enough information is available to assign the permanent designation. Keywords Alloy phases; Chemical analysis-metals/alloys; Composition analysis-metals/alloys; Crystal lattice structure; Crystallographic directions; Cubic system; Data analysis-metals/alloys; Hexagonal system; Metals and metallic materials; Metals and metallic materials-crystal orientation; Monoclinic system; Orientation; Phase designations; Structural analysis; Ternary phase; Tetragonal system; Triclinic system; assigning crystallographic phase designations in metallic systems,; test ICS Code ICS Number Code n/a DOI: This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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