GB/T 13818-2024 PDF English
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Die casting zinc alloys
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GB/T 13818-2024: PDF in English (GBT 13818-2024) GB/T 13818-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.120.60
CCS J 31
Replacing GB/T 13818-2009
Diecasting zinc alloys
ISSUED ON. APRIL 25, 2024
IMPLEMENTED ON. APRIL 25, 2024
Issued by. State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Alloy designations and codes... 6
5 Technical requirements... 7
6 Test methods... 8
7 Inspection rules... 8
8 Marking, quality certificate, packaging, transportation and storage... 9
Annex A (informative) Comparison of diecasting zinc alloy codes... 11
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020
"Directives for standardization - Part 1.Rules for the structure and drafting of
standardizing documents".
This document replaces GB/T 13818-2009 "Die casting zinc alloys". Compared with
GB/T 13818-2009, in addition to structural adjustments and editorial changes, the main
technical changes in this document are as follows.
a) Change the limit requirements for some impurity elements in the chemical
composition of diecasting zinc alloys (see 5.1 of this Edition; 4.1 of Edition 2009);
b) Add diecasting zinc alloy designations YZZnAl4C, YZZnAl3Cu5 and chemical
composition (see 5.1 of this Edition);
c) Add surface quality requirements for diecasting zinc alloys (see 5.2 of this
Edition);
d) Change the test method for chemical composition of diecasting zinc alloy (see 6.1
of this Edition; Chapter 5 of Edition 2009);
e) Add inspection rules for diecasting zinc alloys (see Chapter 7 of this Edition;
Chapter 5 of Edition 2009);
f) Change the marking, quality certification, packaging, transportation and storage
requirements for diecasting zinc alloys (see Chapter 8 of this Edition; Chapter 6
of Edition 2009).
Attention is drawn to the possibility that some of the elements of this document may be
the subject of patent rights. The issuing authority shall not be held responsible for
identifying any or all such patent rights.
This document was proposed by and shall be under the jurisdiction of National
Technical Committee on Casting of Standardization Administration of China (SAC/TC
54).
The drafting organizations of this document. Guizhou Metallurgical and Chemical
Industry Research Institute, Suzhou Xiangguan Alloy Research Institute Co., Ltd.,
Wuhu Longxing Alloy Co., Ltd., Dongguan Shijie Huafeng Metal Co., Ltd., Changsha
Dicastal Technology Co., Ltd., Anhui Tongguan Nonferrous Metals (Chizhou) Co., Ltd.,
ACODI Fuller Precision Technology (Taicang) Co., Ltd., Foshan Vocational and
Technical College, Zhejiang Bairun Kitchenware Co., Ltd., Dongfeng (Shiyan)
Nonferrous Casting Co., Ltd., China Machinery Engineering Institute Group Shenyang
Foundry Research Institute Co., Ltd., Shanghai Jiaotong University, Beijing Institute of
Graphic Communication, Chongqing Electronic Engineering Vocational College,
Diecasting zinc alloys
1 Scope
This document specifies the designations and codes, technical requirements, test
methods, inspection rules and markings, quality certificates, packaging, transportation
and storage of diecasting zinc alloys.
This document applies to the production and inspection of diecasting zinc alloys.
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 8738-2014, Zinc alloy ingots for casting
GB/T 12689.1, The methods for chemical analysis of zinc and zinc alloys -- Part 1.
-- The determination of aluminum content -- The chrome azurol S-polyethylene
glycol octyl phenylether-cetylpyridine bromine spectrophotometric method and
chrome azurol S spectrophotometric method
GB/T 12689.3, The methods for chemical analysis of zinc and zinc alloys -- Part 3.
-- 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 -- Part 4.
-- The determination of copper content -- The lead diethyldithio-carbamate
spectrophotometric method and the flame atomic absorption spectrometric method
and the electrolytic method
GB/T 12689.5, The methods for chemical analysis of zinc alloys -- Part 5.-- The
determination of iron content -- The sulfosalicylic acid spectrometric method and
the flame atomic absorption spectrometric method
GB/T 12689.6, The methods for chemical analysis of zinc and zinc alloys -- Part 6.
-- 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 -- Part 8.
-- The determination of silicon content -- The molybdenum blue spectrophotometric
method
GB/T 12689.10, The methods for chemical analysis of zinc and zinc alloys -- Part
10.-- The determination of tin content -- The phenylfluorone-cetyltrimethyla-
mmonium bromide spectrophotometric method
GB/T 12689.12, The methods for chemical analysis of zinc and zinc alloys -- Part
12.-- The determination of lead, cadmium, iron, copper, tin, aluminium, arsenic,
stibium, magnesium lanthanum and cerium contents -- The inductively coupled
plasma-optical emission spectrometric method
GB/T 26042, Methods for analysis of zinc and zinc alloys -- The optical emission
spectrometry
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Alloy designations and codes
4.1 Expression methods for designations
A diecasting zinc alloy designation is composed of the chemical symbols of zinc and
the main alloying elements. The main alloying elements are followed by a number
representing their nominal mass fraction (the nominal mass fraction is the rounded
integer value of the average mass fraction of the element).
The letters "Y" or "Z" (the first letters of the Chinese pinyin for the words "Ya" and
"Zhu") in front of the alloy designation indicate that it is used for diecasting zinc alloy.
The last letter is used to distinguish different alloys with the same nominal mass fraction
of the main alloying element but slightly different contents of other elements (see Table
1 for specific differences).
4.2 Expression methods for codes
In the alloy code, "YX" ("Y" and "X" are the first letters of the Chinese pinyin for "Ya"
and "Xin" respectively) indicates diecasting zinc alloy. "YX" is followed by three
Arabic numerals and one letter. The first and second digits indicate the nominal mass
fraction of aluminum in the alloy. The third digit indicates the nominal mass fraction of
copper in the alloy. The last letter "A, B, C" is used to distinguish alloys with the same
nominal mass fraction of aluminum and slightly different other elements.
The code representation method of diecasting zinc alloy is as follows.
b) Production batch;
c) Net weight of bundle.
8.2 Quality certificate
Each batch of diecasting zinc alloy shall be accompanied by a quality certificate, which
shall at least include.
a) Supplier name and trademark;
b) Product name and designation (or code);
c) Batch number;
d) Net weight and number of pieces (bundles);
e) Analytical test results and inspection department stamp;
f) Refence to this document;
g) Production date.
8.3 Packaging
Diecasting zinc alloys shall be bundled together. Each designation shall be bundled
separately. The packaging shall be firm to ensure that it will not fall apart during
transportation.
8.4 Transportation
8.4.1 After the diecasting zinc alloy is packaged into bundles, it is not allowed to hook
or collide with the packaging belt during forklift or lifting.
8.4.2 Diecasting zinc alloys shall be shipped by transportation vehicles without
corrosive substances. During transportation, they shall meet the stacking requirements.
They shall be protected from rain, moisture, dropping and severe collision.
8.5 Storage
8.5.1 Diecasting zinc alloys shall be classified and stacked by designation. They shall
be stacked neatly and stored in a dry, ventilated warehouse without corrosive substances.
They shall not be stored together with acids, alkalis or other corrosive chemicals.
8.5.2 The gray or grayish white substance generated on the surface of diecasting zinc
alloy due to natural oxidation during storage shall not be used as a basis for scrapping.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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