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ASTM E157-88(1994)
Practice for Assigning Crystallographic Phase Designations in Metallic Systems (Withdrawn 1999)
STANDARD published on 1.1.1994
The information about the standard:
Designation standards: ASTM E157-88(1994)
Note: WITHDRAWN
Publication date standards: 1.1.1994
SKU: NS-42223
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM
Annotation of standard text ASTM E157-88(1994) :
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
Additional information
| 1. 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. |
