GB/T 14992-2025 (GB/T 14992-2005) PDF English
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Superalloys and intermetallic compounds - Designation and chemical composition
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Classification and designation for superalloys and high temperature intermetallic materials
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Types of heat-resisting superalloys
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GB/T 14992-2005: Classification and designation for superalloys and high temperature intermetallic materials
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT14992-2005
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.140.01
H 57
Replacing GB/T 14992-1994
Classification and designation for superalloys and
high temperature intermetallic materials
Issued on. JULY 21, 2005
Implemented on. JANUARY 01, 2006
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the PRC;
Standardization Administration of the PRC.
Table of Contents
Foreword... 3
1 Scope... 5
2 Classification... 5
3 Naming rules and use of designation for superalloys and high temperature
intermetallic materials... 5
4 Representation method of designation... 6
5 Designations of superalloys and high temperature intermetallic materials and
their chemical composition... 9
1 Scope
This Standard specifies the classification, naming principles and naming
procedures of designation, and general chemical composition, etc. for
superalloys and high temperature intermetallic materials.
This Standard applies to deformed superalloys, cast superalloys (isometric
crystal cast superalloys, directionally solidified columnar crystal superalloys,
and single crystal superalloys), superalloy wire for welding, powder metallurgy
superalloys, dispersion strengthened superalloys and high temperature
intermetallic materials.
2 Classification
2.1 Superalloy classification
According to the basic forming method or special use of alloys, alloys are
classified into deformed superalloys, cast superalloys (isometric crystal cast
superalloys,
2.2 Classification of high temperature intermetallic materials
According to the basic constituent elements of the high temperature materials,
the high temperature materials are classified into nickel-aluminum-based high
temperature intermetallic materials and titanium-aluminum-based high
temperature intermetallic materials.
3 Naming rules and use of designation for superalloys and high temperature intermetallic materials
3.1 For superalloys and high temperature intermetallic materials which have
been scientifically researched, trial-produced,
3.2 Superalloys and high temperature intermetallic materials in the scientific
research and trial-production stage can be named according to the designation
representation method of this Standard.
3.4 The designations of superalloys and high temperature intermetallic
materials are represented by a combination of letters and Arabic numerals.
4 Representation method of designation
4.1 Designation prefix
The designation of deformed superalloy is prefixed with the Chinese phonetic
alphabet “GH” (“G” and “H” are the first letters of Chinese Pinyin “Gao” and “He”,
respectively);
4.2 Arabic numerals
4.2.1 Deformed superalloy and superalloy wire for welding
4.2.2 Other superalloys and high temperature intermetallic materials
4.2.2.1 The prefix of cast superalloy is generally followed by three Arabic
numerals. The first digit indicates the alloy’s classification code.
5 Designations of superalloys and high temperature intermetallic materials and their chemical composition
5.1 The chemical composition of the alloy or material designations listed in this
Standard is a general chemical composition.
5.2 Designations of deformed superalloys and their chemical composition are
shown in Table 1.
5.3 Designations of cast superalloys (isometric crystal cast superalloys,
directionally solidified columnar crystal superalloys, and single crystal
superalloys) and their chemical composition are shown in Table 2.
5.7 Designations of high temperature intermetallic materials and their chemical
composition are shown in Table 6.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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