ASTM-E157:1994 Edition

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E157-88(1994) Practice for Assigning Crystallographic Phase Designations in Metallic Systems (Withdrawn 1999)

Published By	Publication Date	Number of Pages
ASTM	1994

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Description

ASTM E157-88-Reapproved1994

Withdrawn Standard: Practice for Assigning Crystallographic Phase Designations in Metallic Systems (Withdrawn 1999)

ASTM E157

Scope

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:

Additional information

Standard Title	E157-88(1994) Practice for Assigning Crystallographic Phase Designations in Metallic Systems (Withdrawn 1999)
Published Code	ASTM
Publication Date	1994