GB/T 1175-2018 PDF in English
GB/T 1175-2018 (GB/T1175-2018, GBT 1175-2018, GBT1175-2018)
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Name of Chinese Standard | Status |
| GB/T 1175-2018 | English | 120 |
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Casting zinc alloys
| Valid |
| GB/T 1175-1997 | English | 399 |
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Casting zinc alloys
| Obsolete |
| GB/T 1175-1974 | English | RFQ |
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Cast zinc alloys
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Standards related to (historical): GB/T 1175-2018
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GB/T 1175-2018: PDF in English (GBT 1175-2018) GB/T 1175-2018
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.120.60
J 31
Replace GB/T 1175-1997
Casting zinc alloys
ISSUED ON. JULY 13, 2018
IMPLEMENTED ON. AUGUST 01, 2018
Issued by. State Administration for Market Regulation;
Standardization Administration Committee.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Alloy designations and codes ... 5
5 Technical requirements ... 6
6 Test methods ... 7
7 Inspection rules ... 7
Annex A (informative) Representation methods for casting zinc alloy codes ... 9
Annex B (normative) Mechanical properties specimen and pouring riser system
... 10
Casting zinc alloys
1 Scope
This Standard specifies the alloy designations and codes, technical
requirements, test methods and inspection rules for casting zinc alloys.
This Standard is applicable to the zinc alloys for zinc alloy castings (excluding
die castings).
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB/T 228.1, Metallic materials - Tensile testing - Part 1. Method of test at
room temperature
GB/T 231.1, Metallic materials - Brinell hardness test - Part 1. Test method
GB/T 8063, Designation of cast nonferrous metals and their alloys
GB/T 12689.1, Methods for chemical analysis of zinc and zinc alloys - Part
1. Determination of aluminum content - Chromazurol S-polyethylene glycol
octyl phenylether-cetylpyridine bromine spectrophotometry, Chromeazurol S
spectrophotometric method and EDTA titrimetry
GB/T 12689.3, The methods for chemical analysis of zinc and zinc alloys -
The determination of cadmium content - The flame atomic absorption
spectrometric method
GB/T 12689.4, The methods for chemical analysis of zinc and zinc alloys -
The determination of copper content - The lead diethyldithio-carbamate
spectrophotometric method and the flame atomic absorption
GB/T 12689.5, The methods for chemical analysis of zinc and zinc alloys -
The determination of iron content - The sultosalicylic acid spectrometric
method and the flame atomic absorption spectrometric method
GB/T 12689.6, The methods for chemical analysis of zinc and alloys - The
determination of lead content - The oscillopolarographic method
GB/T 12689.7, Methods for chemical analysis of zinc and zinc alloys - Part
7. Determination of magnesium content - Flame atomic absorption
spectrometric method
GB/T 12689.8, The methods for chemical analysis of zinc and zinc alloys -
The determination of silicon content - The molybdenum blue
spectrophotometric method
GB/T 12689.10, The methods for chemical analysis of zinc and zinc alloys -
The determination of tin content - The phenylfluorone-cetyltrimethyla-
mmonium bromide spectrophotometric method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
zinc alloys
the alloy containing more than 50% of zinc, and other elements such as
aluminum, copper or magnesium.
4 Alloy designations and codes
4.1 Alloy designations
See Table 1 for casting zinc alloy designations. The representation methods for
designations shall comply with the provisions of GB/T 8063.
4.2 Alloy codes
See Annex A for the representation methods of alloy codes.
4.3 Technique codes
The technique codes of alloy materials are as follows.
S - Sand casting;
J - Metal casting;
F - Casting state;
T3 – Homogenization;
JF - Metal casting state;
SF - Sand casting state;
then take one after casting (after the furnace). Send two specimens
simultaneously for inspection. When the analysis results are in accordance with
the requirements of Table 1 (unless special needs, it generally only performs
chemical analysis on alloying elements and major impurities), the chemical
composition of this furnace (batch) of alloys shall be qualified. Allow double
sampling for inspection should any unqualified be found. If the inspection
results still fail, the chemical composition of this furnace (batch) of alloys shall
be unqualified.
7.2 Mechanical properties
7.2.1 Casting specimen of mechanical properties while casting specimen of
chemical composition.
7.2.2 For each furnace (batch) of alloys, send 2 specimens of its casting
mechanical properties (1 before furnace, 1 after furnace) at the first time to
determine mechanical properties. If the results comply with the provisions of
Table 2, the mechanical properties of this furnace (batch) of alloys shall be
qualified. Should any unqualified be found, allow double sampling for inspection.
If the inspection results still fail, the mechanical properties of this furnace (batch)
of alloys shall be unqualified.
7.2.3 When the single casting specimen is found to have casting defects or the
inspection result is unqualified due to the failure of the inspection itself, the
inspection result shall be invalid.
Annex A
(informative)
Representation methods for casting zinc alloy codes
A.1 Code composition
The alloy code consists of the letters Z, A (they are the first letters of the
chemical element symbol for zinc and aluminum) and the subsequent Arabic
numerals. The first of ZA or the first, second digits represents the modified
integer value of the average percentage of aluminum. The average percentage
of copper is rounded off to an integer value and is placed at the end of the code.
The aluminum content and copper content is separated with a horizontal line
(one byte long).
Example 1. The alloy code of ZZnAl4Cu1Mg is ZA4-1.
Example 2. The alloy code of ZZnAl27Cu2Mg is ZA27-2 (when the average percentage of
copper in the alloy is rounded off to an integer value and it only has a kind of 2%, it can be
abbreviated as ZA27, and so on for other alloy codes. For example, ZA6-1 is abbreviated as
ZA6, ZA8-1 is abbreviated as ZA8, and ZA9-2 is abbreviated as ZA9.)
A.2 Code reading
Alloy code reading is as follows. ZA4-1 is read as zinc aluminum four one, or
as ZA four one (Z and A are pronounced according to their English letters).
ZA27 is read as zinc aluminum two seven, or as ZA two seven. And so on.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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