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GB/T 27677-2017 PDF English


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GB/T 27677-2017English550 Add to Cart 0-9 seconds. Auto-delivery. Aluminium hardeners Valid
GB/T 27677-2011English839 Add to Cart 4 days Aluminium hardeners Obsolete
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GB/T 27677-2017: PDF in English (GBT 27677-2017)

GB/T 27677-2017 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.10 H 60 Replacing GB/T 27677-2011 Aluminium hardeners ISSUED ON: MAY 31, 2017 IMPLEMENTED ON: DECEMBER 01, 2017 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People’s Republic of China. Table of Contents Foreword ... 3 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions ... 7 4 Requirements ... 7 5 Test methods ... 30 6 Inspection rules ... 31 7 Marking, packaging, transportation and storage ... 33 8 Order form (or contract) contents ... 34 Appendix A (Informative) Color identification of aluminium hardeners ... 35 Aluminium hardeners 1 Scope This Standard specifies the requirements, test methods, inspection rules, as well as marking, packaging, transportation, storage, quality certificate and order form (or contract) contents for aluminium hardeners. This Standard applies to aluminium hardeners for cast aluminium alloys and wrought aluminium alloys. This Standard does not apply to aluminium-titanium-boron, aluminium-titanium- carbon and aluminium-titanium alloy wires for cast aluminium alloys and wrought aluminium 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 1196, Unalloyed aluminium ingots for remelting GB/T 3199, Wrought aluminium and aluminium alloy products - Packing, marking, transporting and storing GB/T 3246.1, Inspection method for structure of wrought aluminum and aluminum alloy products - Part 1: Inspection method for microstructure GB/T 3246.1, Inspection method for structure of wrought aluminum and aluminum alloy products - Part 2: Inspection method for macrostructure GB/T 7999, Optical emission spectrometric analysis method of aluminum and aluminum alloys GB/T 8170, Rules of rounding off for numerical values & expression and judgment of limiting values GB/T 17432, Methods of sampling for analyzing the chemical composition of wrought aluminum and aluminum alloys GB/T 20975 (All parts), Methods for chemical analysis of aluminium and aluminium alloys YS/T 275, High purity aluminium ingot YS/T 665, Refined aluminium ingot for remelting 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aluminium hardeners An alloy made of aluminium as a matrix and melted with other metals or non-metals at elevated temperatures. It is used to adjust and control the chemical composition and structure of cast aluminium alloys or wrought aluminium alloys. The mass fraction of the main alloying elements can exceed 50%. 4 Requirements 4.1 Product classification 4.1.1 Representation method of aluminium hardener designation The designation of aluminium hardeners is composed of “Al” + the symbol of the main alloying element + the nominal mass fraction of the main alloying element. The main alloying elements are arranged in descending order by their element mass fractions. When the nominal mass fractions of the main alloying elements and the main alloying elements are the same, but the impurity elements are different or the mass fractions of the impurity elements are different, the suffix English letters indicate different impurity control requirements. Examples are as follows: Example 1: Designation of aluminium hardeners with one main alloying element Example 2: Designation of aluminium hardeners with two main alloying elements 4.1.4 Marking and examples The marking of aluminium hardeners is expressed in the order of product category, number of this Standard, designation of the aluminium hardener, designation of the raw aluminium ingot (which can be omitted when designation Al99.70 is selected), dimensions and piece weight. Examples of marking are as follows: Example 1: The aluminium hardener, with the designation of aluminium hardener AlB3, the designation of raw aluminium ingot Al99.70, the thickness 40 mm, the width 220 mm, the length 420 mm, and the weight per piece 7 kg, is marked as: Ingot GB/T 27677-AlB3-40×220×420-7 Example 2: The aluminium hardener, with the designation of aluminium hardener AlCa5, the designation of raw aluminium ingot Al99.70, the wire diameter ϕ9.5 mm, and the weight per coil 200 kg, is marked as: Wire coil GB/T 27677-AlCa5-ϕ9.5-200 Example 3: The aluminium hardener, with the designation of aluminium hardener AlCa10, the designation of raw aluminium ingot Al99.70, the wire diameter 9.5 mm and the weight per bundle 5 kg, is marked as: Wire rod GB/T 27677-AlCa10-ϕ9.5-5 Example 4: The aluminium hardener, with the designation of aluminium hardener AlB3, the designation of raw aluminium ingot Al99.70, the thickness 30 mm, the width 250 mm, the length 250 mm, and the weight per piece 5 kg, is marked as: Ingot GB/T 27677-AlSc2(Al99.90)-30×250×250-5 5.3 Microstructure Microstructure shall be inspected in accordance with the provisions of GB/T 3246.1. 5.4 Appearance Visually inspect the appearance under natural scattered light. 6 Inspection rules 6.1 Inspection and acceptance 6.1.1 The aluminium hardeners shall be inspected by the supplier to ensure that the quality of the aluminium hardeners complies with the provisions of this Standard and the order form (or contract), and a quality certificate shall be filled in. 6.1.2 The buyer shall inspect the received aluminium hardeners in accordance with the provisions of this Standard. If the test result is inconsistent with the provisions of this Standard and the order form (or the contract), a written form shall be submitted to the supplier; the issue shall be settled by negotiation between the supplier and the buyer. Objections related to product appearance shall be raised within 1 month from the date of receipt of the aluminium hardeners. Objections related to other properties shall be raised within 3 months from the date of receipt of the aluminium hardeners. Arbitration, if required, may be carried out by an organization which is recognized by both the supplier and the buyer; the sampling shall be jointly done by the buyer. 6.2 Batch Aluminium hardeners shall be submitted for inspection in batches, and each batch shall be composed of aluminium hardeners of the same melting order. 6.3 Inspection items Each batch shall be inspected for chemical composition, fracture structure and appearance. Aluminium hardeners of designations AlTi6A, AlTi6, AlTi10A, AlTi10, AlTi5B1A, AlTi5B1, AlZr5A, AlZr5, AlZr10A, AlZr10, AlZr15A, and AlZr15 shall also be inspected for microstructure. When users have requirements for the microstructure of aluminium hardeners of other designations, the required aluminium hardeners shall be inspected for microstructure on a batch basis. 6.4 Sampling The sampling of aluminium hardeners shall comply with the requirements in Table 7. 7 Marking, packaging, transportation and storage 7.1 Marking 7.1.1 Product marking The aluminium hardener that has passed the inspection shall be accompanied by the following imprint (or label): a) designation; b) melting order; c) product category (ingot, wire coil or wire rod); d) color identification [The alloy color identification should be determined by referring to Appendix A; alternatively, it can be determined through negotiation between the supplier and the buyer, and noted in the order form (or contract)]; e) seal of the supplier’s quality inspection department or signature (or seal) of the quality inspector. 7.1.2 Packaging markings The packaging box markings of aluminium hardeners shall comply with the regulations of GB/T 3199. 7.2 Packaging, transportation, storage 7.2.1 The packaging of aluminium hardeners shall be determined through negotiation between the supplier and the buyer, and shall be specified in the order form (or contract). 7.2.2 Aluminium hardeners shall be stacked, stored and transported according to the designation, and attention shall be paid to protection against rain, moisture and corrosion. The transportation and storage places shall be clean. 7.3 Quality certificate Each batch shall be accompanied by a quality certificate that meets the requirements of this Standard, stating: a) supplier name, address, telephone, fax; b) product name: c) designation; d) product category (ingot, wire coil or wire rod); e) batch number; f) net weight and number of pieces; g) various analysis and inspection results and the inspection seal (or inspection ID) of the supplier’s quality inspection department; h) code of this Standard; i) date of manufacture (or packaging). 8 Order form (or contract) contents The order form (or contract) that orders the materials which are listed in this Standard shall include the following: a) product name; b) designation; c) product category (ingot, wire coil or wire rod); d) quantity (weight); e) special requirements of the buyer: -- special requirements for chemical composition; -- special requirements for microstructure; -- other special requirements; f) code of this Standard. ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.