GB/T 38988-2020 PDF EnglishUS$155.00 · In stock · Download in 9 seconds
GB/T 38988-2020: Damage-tolerant grade titanium alloy plate Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 38988-2020: Damage-tolerant grade titanium alloy plate---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/GBT38988-2020GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.150.50 H 64 Damage-tolerant grade titanium alloy plate ISSUED ON: JULY 21, 2020 IMPLEMENTED ON: JUNE 01, 2021 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative references ... 4 3 Technical requirements ... 5 4 Test methods ... 8 5 Inspection rules ... 9 6 Marks, packaging, transportation, storage and quality certificate ... 10 7 Order sheet (contract) content ... 11 Damage-tolerant grade titanium alloy plate1 ScopeThis Standard specifies technical requirements, test methods, inspection rules and marks, packaging, transportation, storage, quality certificate and content of order sheet (or contract) for damage-tolerant grade titanium alloy plate. This Standard is applicable to damage-tolerant grade titanium alloy plate produced by rolling method.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 228.1-2010, Metallic materials - Tensile testing - Part 1: Method of test at room temperature GB/T 3620.1, Designation and Composition of Titanium and Titanium Alloys GB/T 3620.2, Designation and composition of titanium and titanium alloys GB/T 4161, Metallic materials - Determination of plane-strain fracture toughness GB/T 4698 (all parts), Sponge titanium, titanium and titanium alloys GB/T 5168, Microstructure and macrostructure examination for titanium and titanium alloys GB/T 5193, Method of ultrasonic inspection for wrought titanium and titanium alloy products GB/T 8180, Wrought titanium and titanium alloy products packing marking transporting and storing GB/T 23603, Test method of titanium and titanium alloy surface contamination layer GB/T 23605, Determination of β transus temperature of titanium alloys 3.11 β transition temperature Plates shall provide β transition temperature according to the melting furnace number. The β transition temperature only provides the actual measured value, not as a basis for judgment. 3.12 Ultrasonic testing Plates shall be ultrasonically tested. The inspection results shall meet the requirements of level A1 in GB/T 5193. 3.13 Surface quality 3.13.1 Plates shall be supplied with water milled, sandblasted or machined surfaces. 3.13.2 The surface of the plate shall be smooth and clean. Allow to remove local defects on the surface by grinding. However, the minimum allowable thickness of the plate shall be guaranteed after removal. 3.13.3 When removing local defects on the surface, grind along the rolling direction. After grinding, the plate shall be water-milled, sand-blasted or machined to make the surface gloss and roughness of the plate tend to be uniform.4 Test methods4.1 The chemical composition is inspected according to GB/T 4698 (all parts) or YS/T 1262. The arbitration analysis is carried out in accordance with GB/T 4698 (all parts). 4.2 The external dimensions and their allowable deviations are inspected with corresponding precision measuring tools. Thickness measurement shall be carried out within the range of 10mm~100mm from the edge of the plate. 4.3 The tensile properties are inspected according to GB/T 228.1-2010. Select the R4 sample in GB/T 228.1-2010. 4.4 Fracture toughness is inspected according to GB/T 4161. Choose compact tensile sample. 4.5 The microstructure is inspected according to GB/T 5168. The magnification is 500 times. 4.6 The macrostructure is inspected according to GB/T 5168. 4.7 Surface contamination shall be inspected according to GB/T 23603. The The following marks (or labels) shall be made on the products that have passed the inspection: a) designation; b) specification; c) condition; d) batch number; e) reference to this Standard. 6.2 Packaging, marks, transportation and storage Packaging, marks, transportation and storage of the product shall comply with the provisions of GB/T 8180. 6.3 Quality certificate Each batch of products shall be accompanied by a quality certificate, indicating: a) supplier’s name; b) product name; c) product designation, specification and condition; d) smelting furnace number, batch number, batch weight and number of sheets; e) various analysis and inspection results and mark of quality inspection department; f) reference to this Standard; g) packing date.7 Order sheet (contract) contentThe order sheet (or contract) for the products listed in this Standard shall include at least the following: a) product name; b) designation; c) specification; ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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