This standard specifies the designation, technical requirements and inspection methods of aluminum die castings. This standard is applicable to the manufacture of aluminum die castings. GB/T 15115-1994 Aluminum die castings GB/T15115-1994 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Subject content and scope of application
Die casting aluminium alloys
GB/T 15115 -- 94
This standard specifies the designation method, technical requirements and inspection methods of the grades and codes of die casting aluminium alloys. This standard applies to the manufacture of aluminium alloy die castings. 2 Referenced standards
GB228 Metal tensile test method
GB231 Metal Brinell hardness test method
GB6987.1～6987.16 Chemical analysis method for aluminium and aluminium alloys GB/T13822 Die casting non-ferrous alloy test specimens
3 Designation and code
3.1 Designation method
The designation of die casting aluminium alloys is composed of the chemical symbols of aluminium and the main alloying elements. The main alloying elements are followed by a number indicating their nominal percentage content (the nominal percentage content is the rounded value of the average percentage content of the element). The letters "YZ" are placed in front of the alloy ("Y" and "Z" are the first letters of the Chinese pinyin for "压" and "CASTING" respectively) to indicate a die-cast alloy.
3.2 Method of expressing the code
"YL" and the numbers following it represent the code of the alloy ("Y" and "L" are the first letters of the Chinese pinyin for "压" and "敖" respectively). 4 Technical requirements
4.1 The chemical composition and mechanical properties of the die-cast aluminum alloy shall comply with the provisions in the table 4.2 The mechanical properties of the die-cast aluminum alloy are the cast properties measured by a single-cast tensile test specimen under the specified process parameters. The size and shape of the test specimen shall comply with the provisions of GB/T13822. 5 Inspection methods
5.1 Chemical composition
5.1.1 The inspection of chemical composition shall be carried out in accordance with the provisions of GB6987.1~6987.16. Under the condition of ensuring the accuracy of analysis, other methods are allowed to be used, and the chemical composition shall comply with the provisions in the table. 5.1.2 The frequency of chemical composition inspection is to take one group of samples for each furnace. If there are special requirements, it shall be agreed upon by the supply and demand parties. 5.1.3 If the chemical composition fails the first inspection, re-sampling is allowed. If it still fails, the alloy of the furnace is unqualified. 5.2 Mechanical propertieswww.bzxz.net
5.2.1 The tensile test method shall comply with the provisions of GB228. Approved by the State Bureau of Technical Supervision on July 20, 1994 112
Implemented on July 1, 1995
Alloy grade
Y7.AISi12
YZAISi10Mg
YZAISi12Cu2
YZAISi9Cu4
YZAISi11Cu3
6/Y7.A1Si17Cu5Mg
YZAIMg5Si1
Alloy code
GB/T15115-94
Chemical composition and mechanical properties of die-casting aluminum alloys Chemical composition, %
Mechanical properties (not less than)
Copper, manganese, magnesium, iron, nickel, titanium, zinc, lead, tin
Tensile strength
13.do.60. 60.051.2
11.d1.o0.30.4
13. 0 2. 0|0. 9/1.
0.50.31.20.5
0. 50. 31. 2|0. 5
0. 3 0. 050. 0
1.00.050.01
1.20.10.1More
1.00.10.1
Note: Except for the elements with scope and iron which are mandatory elements, the other elements are sampled when required. 5.2.2 The Brinell hardness test shall comply with the provisions of GB231. 5.2.3 The inspection frequency of mechanical properties shall be determined by the supplier. 220
Elongation
Brinell hardness
50)5/250/30
5.2.4, three specimens per group, if two of the three specimens tested are unqualified, the alloy of the furnace is unqualified, but it is allowed to use the added specimens for a second test. If two of the second tests are unqualified, but the total average value is qualified, the alloy of the furnace is considered qualified. If there are more than two unqualified specimens, the alloy of the furnace is considered unqualified. 1
Additional instructions:
GB/T15115
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the National Casting Standardization Technical Committee. This standard is drafted by the Shenyang Foundry Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Kuang Yunlie, Wang Yu, Ding Nengxu, Guo Cunhou, and Ji Xiang. 411
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