GB/T 15115-2024Die casting aluminum alloys (English PDF)

1 Scope

GB/T 15115-2024 is the Chinese national standard on die casting aluminum alloys, in the field of metallurgy. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 25 April 2024 by the State Administration for Market Regulation; Standardization Administration of China, and has been in force since 25 April 2024. Classification: ICS 77.120.10, CCS J31. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This document specifies the designations and codes, technical requirements, test methods, inspection rules and markings, quality certificates, packaging, transportation and storage of die casting aluminium alloys. This document is applicable to the production and inspection of die casting aluminum alloy materials (aluminum alloy liquid and aluminum alloy ingots).

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 5611, Foundry terminology

GB/T 7999, Optical emission spectrometric analysis method of aluminum and aluminum alloys

GB/T 20975.3, Methods for chemical analysis of aluminium and aluminium alloys - - Part

3 Terms and definitions

For the purposes of this document, the terms and definitions defined in GB/T 5611 apply.

4 Alloy designations and codes

4.1 Representation methods for alloy designations The aluminum alloy designation for die casting is composed of the chemical symbols of aluminum and the main alloying elements.

4.2 Representation methods for alloy codes In the alloy code, "YL" ("Y" and "L" are the first letters of the Chinese pinyin for "Ya" and "Lü" respectively) indicates die casting aluminum alloy. The first digits 1, 2, 3, and 4 after YL respectively represent Al-Si, Al-Cu, Al-Mg, and Al-Zn series alloys, representing the alloy code.

5 Technical requirements

5.1 Chemical composition The chemical composition of die casting aluminum alloy shall comply with the requirements of Table 1.

5.2 Slag inclusion The slag inclusion grade of die casting aluminum alloy shall comply with the requirements in Table 2.

7 Inspection rules

7.1 Inspection items The inspection items are shown in Table 3.

7.2 Batching A batch is composed of products from the same aluminum ladle or melting furnace.

7.3 Sampling Sampling regulations are shown in Table 4.