GB/T 34484.2-2018 PDF EnglishUS$320.00 · In stock · Download in 9 seconds
GB/T 34484.2-2018: Heat-treatable steels -- Part 2: Alloy steels for quenching and tempering 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 34484.2-2018: Heat-treatable steels -- Part 2: Alloy steels for quenching and tempering---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/GBT34484.2-2018GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.10 H 40 Heat-treatable steels - Part 2.Alloy steels for quenching and tempering (ISO 683-2.2016, Heat-treatable steels, alloy steels and free-cutting steels - Part 2.Alloy steels for quenching and tempering, MOD) Issued on: SEPTEMBER 17, 2018 Implemented on: JUNE 01, 2019 Issued by. State Administration for Market Regulation; National Standardization Administration. Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Ordering content... 6 4 Dimensions, shape, weight... 6 5 Technical requirements... 7 5.1 Designation and chemical composition... 7 5.2 Smelting method... 9 5.3 Delivery status... 9 5.4 Mechanical properties... 10 5.5 Macrostructure... 13 5.6 Non-metallic inclusions... 13 5.7 Grain size... 13 5.8 Ultrasonic testing... 13 5.9 Remanence... 14 5.10 Surface quality... 14 6 Test method... 14 7 Inspection rules... 15 7.1 Inspection and acceptance... 15 7.2 Group-batching rules... 15 7.3 Sampling quantity and sampling location... 15 7.4 Re-inspection and determination rules... 15 8 Packaging, marking, quality certificate... 15 Appendix A (Informative) Structural changes of this Part compared with ISO 683- 2.2016... 16 Appendix B (Informative) Technical differences between this Part and ISO 683-2.2016 and the reasons... 18 Appendix C (Informative) Comparison of domestic and foreign designations... 21 Appendix D (Normative) Sampling position for mechanical properties test... 22ForewordGB/T 34484 "Heat-treatable steel" is divided into two parts. - Part 1.Non-alloy steel; - Part 2.Alloy steels for quenching and tempering. This Part is Part 2 of GB/T 34484. This Part was drafted in accordance with the rules given in GB/T 1.1-2009. This Part uses the redrafting method, to modify and adopt ISO 683-2.2016 "Heat- treatable steels, alloy steels and free-cutting steels - Part 2.Alloy steels for quenching and tempering". Compared with ISO 683-2.2016, this Part has structural adjustments. Appendix A lists the comparison of chapter and article numbers between this Part and ISO 683-2.2016. There are technical differences between this Part and ISO 683-2.2016.The clauses involved in these differences have been marked by a vertical single line (丨) in the outer margin position. Appendix B gives a list of corresponding technical differences and their reasons. For ease of use, this Part has made the following editorial changes. - CHANGE the standard name from "Heat-treatable steels, alloy steels and free- cutting steels - Part 2.Alloy steels for quenching and tempering" to "Heat-treatable steels - Part 2.Alloy steels for quenching and tempering"; - DELETE the informative Appendix D and references in ISO 683-2.2016. This Part was proposed by the China Iron and Steel Association. This Part shall be under the jurisdiction of the National Technical Committee for Steel Standardization (SAC/TC 183). Drafting organizations of this Part. Daye Special Steel Co., Ltd., Metallurgical Industry Information Standards Research Institute, Jiangyin Xingcheng Special Steel Co., Ltd., Xiwang Special Steel Co., Ltd. The main drafters of this Part. Chen Jun, Yan Chengming, Li Bopeng, Hu Ruihai, Bai Yun, Meng Yu, Zhang Lingtong, Li Wenshuang. Heat-treatable steels - Part 2.Alloy steels for quenching and tempering1 ScopeThis Part of GB/T 34484 specifies the ordering content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, quality certificate of alloy steels delivered in quenched and tempered state. This Part applies to rolled round steel which has a nominal diameter not exceeding 310 mm and rolled square steel which has a nominal side length not exceeding 280 mm (hereinafter referred to as steel).2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard. GB/T 222 Permissible tolerances for chemical composition of steel products GB/T 223.9 Iron, steel and alloy - Determination of aluminium content - Chrome azurol S photometric method GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method (GB/T 223.11-2008, ISO 4937.1986, MOD) GB/T 223.13 Methods for chemical analysis of iron, steel and alloy - The ammonium ferrous sulfate titration method for the determination of vanadium content GB/T 223.17 Methods for chemical analysis of iron, steel and alloy - The diantipyryl methane spectrophotometry for the determination of titanium content GB/T 223.23 Iron, steel and alloy - Determination of nickel content - The dimethylglyoxime spectrophotometric method GB/T 223.26 Iron, steel and alloy - Determination of molybdenum content - The thiocyanate spectrophotometric method GB/T 6394 Determination of estimating the average grain size of metal GB/T 10561-2005 Steel - Determination of content of nonmetallic inclusions - Micrographic method using standards diagrams (ISO 4967.1998, IDT) GB/T 17505 Steel and steel products - General technical delivery requirements (GB/T 17505-2016, ISO 404.2013, MOD) GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition (GB/T 20066-2006, ISO 14284.1996, IDT) GB/T 20123 Steel and iron - Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method)3 Ordering contentThe contract or order for ordering according to this Part shall include the following content. a) This Part number; b) Product name; c) Designation; d) Smelting method (see 5.2); e) Surface hardness (see 5.4); f) Grain size (see 5.7); g) Ultrasonic testing (see 5.8); h) Remanence (see 5.9); i) Weight (or quantity); j) Dimensions and shape (see Chapter 4); k) Special requirements.4 Dimensions, shape, weight4.1 The dimensions and allowable deviations of steel shall comply with the provisions of Group 2 in GB/T702-2017.7 Inspection rules7.1 Inspection and acceptance 7.1.1 Inspection and acceptance of steel products before leaving factory shall be conducted by the supplier's quality department. 7.1.2 The supplier shall ensure that the delivered steel products comply with the provisions of this Part or the contract. If necessary, the purchaser shall have the right to inspect and accept any inspection item specified in this Part or the contract. 7.2 Group-batching rules Steel products shall be inspected and accepted in batches. Each batch shall consist of steel products of the same designation, furnace number, size, heat treatment system (furnace). 7.3 Sampling quantity and sampling location The sampling quantity and sampling location of steel products shall comply with the provisions of Table 6. 7.4 Re-inspection and determination rules 7.4.1 The re-inspection and determination rules of steel products shall be implemented in accordance with the provisions of GB/T 17505. 7.4.2 Steel products that fail the re-inspection are allowed to be re-heat treated and submitted for acceptance as a new batch. The re-heat treatment can be tempered multiple times, but shall not exceed two quenching.8 Packaging, marking, quality certificateThe packaging, marking, quality certificate of steel products shall comply with the relevant provisions of GB/T 2101. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 34484.2-2018 be delivered?Answer: The full copy PDF of English version of GB/T 34484.2-2018 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 34484.2-2018_English with my colleagues?Answer: Yes. 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