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GB/T 3880.1-2023: Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1: Technical conditions of delivery Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 3880.1: Historical versions
Similar standardsGB/T 3880.1-2023: Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1: Technical conditions of delivery---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT3880.1-2023 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.10 CCS H 61 Replacing GB/T 3880.1-2012 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1.Technical conditions of delivery Issued on: SEPTEMBER 07, 2023 Implemented on: APRIL 01, 2024 Issued by. Condition Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword... 3 Introduction... 7 1 Scope... 8 2 Normative references... 8 3 Terms and definitions... 10 4 Product classification... 10 5 Technical requirements... 25 6 Test methods... 31 7 Inspection rules... 33 8 Marks, packaging, transportation, storage and quality certificate... 42 9 Order sheet (or contract) content... 43 Annex A (informative) Online detection method of sheet and strip surface defects.. 44 Bibliography... 471 ScopeThis document specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality certificate and order sheet (or contract) content for wrought aluminium and aluminium alloy plates, sheets and strips for general engineering. This document applies to general engineering aluminum and aluminum alloy hot-rolled or cold-rolled plates (hereinafter referred to as "plates") and sheets and strips (hereinafter referred to as "sheets and strips").2 Normative referencesThe 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 229, Metallic materials -- Charpy pendulum impact test method GB/T 230.1, Metallic materials -- Rockwell hardness test -- Part 1.Test method GB/T 231.1, Metallic materials -- Brinell hardness test -- Part 1.Test method GB/T 232, Metallic materials -- Bend test GB/T 3075, Metallic materials -- Fatigue testing -- Axial force-controlled method GB/T 3190, Chemical composition of wrought aluminium and aluminium alloys 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 3246.2, Inspection method for structure of wrought aluminum and aluminum alloy products -- Part 2.Inspection method for macrostructure GB/T 3251, Compression test method for aluminium and aluminium alloy products GB/T 3880.2, Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering -- Part 2.Mechanical properties GB/T 3880.3, Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering -- Part 3.Tolerances on forms and dimensions GB/T 4340.1, Metallic materials -- Vickers hardness test -- Part 1.Test method GB/T 6398, Metallic materials -- Fatigue testing -- Fatigue crack growth method GB/T 6519, Ultrasonic inspection of wrought aluminium and magnesium alloy products GB/T 7998-2023, Method for evaluating the susceptibility to intergranular corrosion of aluminum alloys GB/T 7999, Optical emission spectrometric analysis method of aluminum and aluminum alloys GB/T 8005.1, Aluminium and aluminium alloy terms and definitions -- Part 1. Product and method of processing and treatment GB/T 8170, Rules of rounding off for numerical values and expression and judgement of limiting values GB/T 12966, The methods for determining aluminium and aluminium alloys conductivity using eddy current GB/T 16865, Test pieces and methods for tensile test for wrought aluminium, magnesium and their alloy products 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 GB/T 22639, Test method of exfoliation corrosion for aluminium alloy products GB/T 22640, Test method for determining susceptibility to stress corrosion cracking of aluminum alloys GB/T 26492.3, Defects of wrought aluminium and aluminium alloys ingots and products -- Part 3.Defects for plates, sheets and strips GB/T 42914, Test method for fracture toughness of aluminium alloy products GB/T 42916, Identification marking of aluminium and aluminium alloy products YS/T 1629.1-2023, Aluminum alloy plates for aviation - Part 1.7050T7451 plates YS/T 1634, Residual stress evaluation method for aluminum and aluminum alloy products3 Terms and definitionsFor the purposes of this document, the terms and definitions defined in GB/T 8005.1, GB/T 26492.3 apply.4 Product classification4.1 Designation, condition, size specifications and blank opening method The designation, condition, thickness and blank opening method of the product shall comply with the requirements in Table 1.The width and length of the plate, the width of the sheet and strip, and the inner diameter of the roll shall comply with the requirements in Table 2.If the demander has requirements for other designations, conditions, dimensions, or blank opening methods, the supplier and the purchaser shall negotiate and determine with reference to the "Registration sheet for deformed aluminum and aluminum alloy product condition and performance " and indicate in the order sheet (or contract).5 Technical requirementsThe technical requirements of the product shall comply with the provisions of Table 3. When the purchaser has special requirements, the supplier and the purchaser shall negotiate and determine with reference to the "Registration sheet for deformed aluminum and aluminum alloy product condition and performance" and indicate in the order sheet (or contract).6 Test methodsThe test method of the product shall comply with the provisions of Table 9.When the purchaser has special requirements for the test method, it shall be determined through negotiation between the supplier and the purchaser, and shall be noted in the order sheet (or contract).7 Inspection rules7.1 Inspection and acceptance 7.1.1 The product shall be inspected by the supplier to ensure that the product quality complies with the provisions of this document and the order sheet (or contract), and a quality certificate shall be filled out. 7.1.2 The purchaser shall inspect the received products in accordance with the provisions of this document. If the inspection results are inconsistent with the provisions of this document and the order sheet (or contract), a written request shall be submitted to the supplier for negotiation between the supplier and the purchaser. Objections related to surface quality and dimensional deviations shall be raised within 1 month from the date of receipt of the product. Objections related to other performance shall be raised within 3 months from the date of receipt of the product. If arbitration is needed, it can be entrusted to a unit recognized by both the supplier and the purchaser, and sampling can be done jointly by the purchaser. 7.2 Batching Products shall be submitted for acceptance in batches. Each batch shall be composed of products of the same designation, condition, size specifications and blank opening method. There is no limit on batch weight. If the purchaser requires batches based on melting times and heat treatment heats (or continuous heat treatment heats); or if there are requirements for batch weight, this shall be determined through negotiation between the supplier and the purchaser and noted in the order sheet (or contract). 7.6 Judgment of test results 7.6.1 Chemical composition When the chemical composition of any specimen fails, if the product can distinguish the melting order, the melting order represented by the sample will be deemed to be unqualified. Other melts are inspected in sequence. Delivery to those who pass the test. If the melting times cannot be distinguished, the batch will be deemed unqualified. 7.6.2 Size deviation When the size deviation of any plate fails, the supplier is allowed to inspect the finished products one by one. Delivery to those who pass the test. If the size deviation of any sheet and strip fails, the roll will be deemed unqualified. 7.6.3 Covering rate If the covering rate of any specimen fails, double the number of specimens shall be taken from the batch of products for repeated testing. If all repeated test results are qualified, the batch of products will be deemed qualified. If the repeated test results are still unqualified, the product represented by the specimen will be deemed to be unqualified. Suppliers are allowed to inspect finished products piece by piece (roll). Delivery to those who pass the test. 7.6.4 Tensile mechanical properties, compression properties, impact toughness, bending properties, fatigue properties, residual stress, stress corrosion resistance, exfoliation corrosion resistance, intergranular corrosion sensitivity 7.6.4.1 When any specimen fails to pass the test, the product of this batch (or heat treatment heat) will be deemed to be unqualified or shall be subject to 7.6.4.2. 7.6.4.2 If the heat treatment heat of the product can be distinguished, double the number of specimens shall be taken from the heat treatment heat represented by the specimen for repeated testing. If the heat treatment heats cannot be distinguished, double the number of specimens shall be taken from the batch of products for repeated testing (including products represented by unqualified samples taken for the first time). If the repeated test results are all qualified, the product of this batch (or heat treatment heat) will be deemed qualified. If the specimen performance is still unqualified in the repeated test results, the product of this batch (or heat treatment heat) will be deemed to be unqualified. Upon agreement between the supplier and the purchaser, the supplier is allowed to inspect the finished products sheet by sheet (roll). Delivery to qualified candidates may be carried out according to 7.6.4.3. 7.6.4.3 After repeated heat treatment, the supplier shall inspect all exit-factory inspection items in Table 10 according to the heat, except chemical composition, size deviation, coating layer and appearance quality. The sampling quantity is according to Table 11.When all inspection results are qualified, the batch of products is deemed to be qualified; otherwise, the batch of products is deemed to be unqualified. 7.6.5 Fracture toughness 7.6.5.1 If the plane strain fracture toughness KIc value of any specimen fails or the "batch release KQ" value does not meet the requirements, the product of this batch (or heat treatment heat) will be judged to be unqualified or shall be implemented according to 7.6.4.2. 7.6.5.2 If the plane stress fracture toughness of any sample fails, the product of this batch (or heat treatment heat) shall be deemed to be unqualified or shall be implemented in accordance with 7.6.4.2. 7.6.6 Conductivity 7.6.6.1 When the conductivity of any specimen blank fails to meet the standard, proceed according to 7.6.4.2. 7.6.6.2 If the conductivity uniformity of any product fails, the batch will be deemed unqualified. 7.6.7 Matching relationship between electrical conductivity and mechanical properties When the matching relationship between the electrical conductivity and mechanical properties of any specimen blank is unqualified, the judgment shall be based on the stress corrosion resistance test results. 7.6.8 Ultrasonic flaw detection acceptance level If the ultrasonic flaw detection acceptance level of any plate fails, the finished product will be deemed unqualified. 7.6.9 Macrostructure When the macrostructure of any sample fails, the judgment shall be as follows. a) If the product fails due to cracks or delamination defects, the supplier can inspect the finished products one by one. Delivery to those who pass the inspection; b) When the grain size level and fracture structure of any specimen are unqualified, if the melting order can be distinguished, the melting order will be deemed to be unqualified. Other melts are inspected in sequence. Delivery those who pass the inspection. If the melting times cannot be distinguished, the batch will be deemed unqualified. 7.6.10 Microstructure If the microstructure of any specimen fails, the batch (or heat treatment heat) is deemed to be unqualified. 7.6.11 Appearance quality If the appearance quality of any product fails, the finished product sheet (roll) will be deemed to be unqualified.8 Marks, packaging, transportation, storage and qualitycertificate 8.1 Marks 8.2 Packaging, transportation, storage The plates are packed with padding paper. When the purchaser requires not to use paper, oil paper or film, it shall be clearly stated in the order sheet (or contract). Others shall be carried out according to the provisions of GB/T 3199.When the purchaser needs sheets and strips with sleeves, he shall indicate the sleeve material in the order sheet (or contract). 8.3 Quality certificate Each batch of products shall be accompanied by a product quality certificate stating. a) Name of supplier; b) Product name; c) Designation, condition and size specifications; d) Product batch number; e) Net weight or number of boxes (sheets) and rolls; f) Reference to this document; g) Various analysis and inspection results and inspection stamps from the supplier’s quality inspection department; h) Packaging date (or exit-factory date).9 Order sheet (or contract) contentThe order sheet (or contract) for the products listed in this document shall include the following content. a) Product name. b) Designation. c) Condition. d) Dimensions. e) Weight or number of sheets. f) Other special requirements. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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