Zinc alloy ingots for casting
1 Scope
This standard specifies the requirements, test methods, inspection rules, packaging, marking, transportation, storage and quality certificate, as well as contract (or order form) contents of zinc alloy ingots for casting.
It is applicable to zinc alloy ingots for casting (including sand mold casting, metal mold casting, pressure casting, etc.).
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 (including any amendments) applies.
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
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 spectrometric method and the electrolytic method
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 Requirements
3.1 Product classification
Zinc alloy ingots for casting are divided into 11 designations according to chemical compositions. The corresponding relationship between the designations of zinc alloy ingots for casting in this standard and the foreign standards is shown in Annex B.
3.2 Chemical compositions
The chemical compositions of zinc alloy ingots for casting shall meet those specified in Table 1.
3.3 Physical specifications
3.3.1 The zinc alloy ingot for casting is a rectangular trapezoidal ingot with a groove at the bottom for breaking the ingot easily [see Figure 1a) and Figure 1b)]
3.3.2 In order to facilitate the packaging and transportation of zinc alloy ingots for casting, footed ingots may be used at the bottom of each bundle [see Figure 1c)].
3.3.3 Generally, the single small zinc alloy ingot for casting shall not be greater than 25kg, while the big one is 300kg to 400kg.
Foreword i
1 Scope
2 Normative references
3 Requirements
4 Test methods
5 Inspection rules
6 Packaging, marking, transportation, storage and quality certificate
7 Contract (or order form) contents
Annex B (Informative) Comparison of standards and designations of zinc alloy ingots for casting at home and abroad
Annex C (Informative) Reference for mechanical properties of castings using zinc alloy ingots for casting
