GB/T 14993-2025 English PDFGB/T 14993: Historical versions
Basic dataStandard ID: GB/T 14993-2025 (GB/T14993-2025)Description (Translated English): Wrought superalloy - Hot-rolled and forged bars Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H57 Classification of International Standard: 77.140.60 Word Count Estimation: 27,217 Date of Issue: 2025-08-29 Date of Implementation: 2026-03-01 Older Standard (superseded by this standard): GB/T 14993-2008, GB/T 25828-2010 Issuing agency(ies): State Administration for Market Regulation; Standardization Administration of China GB/T 14993-2025: Wrought superalloy - Hot-rolled and forged bars---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/GBT14993-2025ICS 77.140.60 CCSH57 National Standards of the People's Republic of China Replaces GB/T 14993-2008 and GB/T 25828-2010 Deformed high-temperature alloy hot-rolled and forged bars Implemented on 2026-03-01 State Administration for Market Regulation The State Administration for Standardization issued a statement. ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document supersedes GB/T 14993-2008 "Hot-rolled Alloy Bars for Rotating Components" and GB/T 25828-2010 "High-Temperature Alloys" "General Technical Requirements for Bar Stock". This document is based on GB/T 14993-2008, and integrates the content of GB/T 25828-2010. Compared with GB/T 14993-2008, apart from structural adjustments and editorial changes, the main technical changes are as follows. a) Load-bearing components were added using GH1015, GH1035A, GH1139, GH1140, GH2132, GH2150, GH2150A, and GH2696. GH2901, GH3030, GH3039, GH3044, GH3128, GH3536, GH3600, GH3625, GH4033, GH4099, 21 high-temperature alloy grades, including GH4133B, GH4163, and GH5605, and their related requirements (see Chapter 7); b) Two new high-temperature alloy grades, GH2132A and GH4220, for rotating components have been added, along with their related technical requirements (see Chapter 7); c) Added categories (see Chapter 4); d) The name of the smelting method has been changed (see 6.1, 5.1 in the.2008 edition); e) The requirements for low magnification have been changed (see 7.3, 5.5 in the.2008 version); f) The requirements for high magnification have been changed (see 7.4, 5.6 in the.2008 version); g) The requirements for ultrasound testing have been changed (see 7.5, 5.7 in the.2008 edition); h) Surface roughness requirements have been added (see 7.6.3); i) The methods for testing chemical components have been changed (see 8.1, Chapter 6 of the.2008 edition); j) The review and judgment rules have been changed (see 9.4, 7.4 in the.2008 version); k) A standard rating chart for primary carbides of GH4133B alloy bars has been added (see Appendix A). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed by the China Iron and Steel Association. This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). This document was drafted by. Fushun Special Steel Co., Ltd., Panzhihua Iron & Steel Group Jiangyou Great Wall Special Steel Co., Ltd., and Beijing Steel Research Institute Gaona Technology. Technology Co., Ltd., AVIC Shanghai University High Temperature Alloy Materials Co., Ltd., Western Superconducting Materials Technology Co., Ltd., Beijing Beiye Power Energy Materials Co., Ltd., Metallurgical Industry Information and Standardization Research Institute, Jiangsu Longda Superalloy Aviation Materials Co., Ltd., Sichuan Liuhe Special Metal Materials Co., Ltd. Limited Liability Company, Beijing University of Science and Technology. The main drafters of this document are. Gu Qiang, Yu Teng, Xu Guohua, Han Fu, He Yongsheng, Wen Xinli, Wang Lin, Feng Wenjing, Wang Shipu, and Cheng Huadong. Chen Qingxin, Yan Chengming, Gu Yu, Li Fengyan, Feng Xu, Wang Kaixuan, Zhang Zhiwei, Han Shouye, Yao Zhihao, Cen Kaiqiang. The release history of this document and the document it replaces is as follows. ---First published in 1982 as GB n176-1982, revised for the first time in.1994, and revised for the second time in.2008; ---This is the third revision and it has been incorporated into GB/T 25828-2010. Deformed high-temperature alloy hot-rolled and forged bars 1.Scope This document specifies the classification and designation of hot-rolled and forged bars (hereinafter referred to as bars) of wrought high-temperature alloys (hereinafter referred to as alloys). The contents, manufacturing process, technical requirements, inspection rules, packaging, marking and quality certificate describe the corresponding test methods. This document applies to wrought high-temperature alloy hot-rolled bars for manufacturing rotating components (hereinafter referred to as rotating component bars) and wrought high-temperature alloy bars for manufacturing load-bearing components. High-temperature alloy hot-rolled and forged bars (hereinafter referred to as load-bearing bars). Their chemical composition is also applicable to high-temperature alloy ingots and billets. and its products. 2.Standard References The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all and amendments) applies. This document. GB/T 222 Permissible Deviations in Chemical Composition of Finished Steel and Alloy Products GB/T 223 (all parts) Chemical Analysis Methods for Iron and Steel and Alloys GB/T 228.1 Metallic materials – Tensile testing – Part 1.Test method at room temperature GB/T 228.2 Metallic materials – Tensile testing – Part 2.High temperature test method GB/T 229 Metallic materials Charpy impact test method GB/T 231.1 Metallic materials – Brinell hardness test – Part 1.Test method GB/T 702-2017 Dimensions, shape, weight and permissible deviations of hot-rolled steel bars GB/T 908-2019 Dimensions, shape, weight and permissible deviations of forged steel bars GB/T 2039 Metallic materials - Uniaxial tensile creep test method GB/T 2101 General Provisions for Acceptance, Packaging, Marking and Quality Certificate of Section Steel GB/T 4162-2022 Ultrasonic Testing Method for Forged and Rolled Steel Bars GB/T 6060.2 Surface roughness comparison blocks for surfaces machined by grinding, turning, boring, milling, planing and cutting GB/T 6394 Method for Determination of Average Grain Size of Metals GB/T 11170 Determination of Multi-Element Content in Stainless Steel by Spark Discharge Atomic Emission Spectrometry (Conventional Method) GB/T 14992 Grades and Chemical Compositions of High-Temperature Alloys and Intermetallic Compounds GB/T 14999.1-2025 High-Temperature Alloys - Test Methods - Part 1.Low-Magnification Structure GB/T 14999.2-2025 High-Temperature Alloys - Test Methods - Part 2.High-Magnification Structure GB/T 20066 Sampling and Sample Preparation Methods for the Determination of Chemical Composition of Steel and Iron GB/T 20123 Determination of Total Carbon and Sulfur Content in Iron and Steel - Infrared Absorption Method After Combustion in a High-Frequency Induction Furnace (Conventional Method) GB/T 20124 Determination of Nitrogen Content in Iron and Steel - Inert Gas Molten Thermal Conductivity Method (Conventional Method) GB/T 20127 (all parts) Determination of trace elements in iron and steel and alloys GB/T 38939 Determination of Multi-Element Content in Nickel-Based Alloys by Spark Discharge Atomic Emission Spectrometry (Conventional Method) Chemical Analysis Methods for HB5220 (All Parts) High-Temperature Alloy HB20241 (All Parts) High Temperature Alloy Chemical Composition Spectroscopic Analysis Method 3.Terms and Definitions The terms and definitions defined in GB/T 14992 apply to this document. 4.Classification and Codes 4.1 Bar stock is classified into the following two categories according to its intended use. a) For rotating parts; b) For load-bearing components. 4.2 Bar stock is divided into two categories according to the processing method used, and the categories and codes are as follows. a) UP for pressure processing 1) Hot pressure processing (UHP); 2) Cold pressure processing UCP. b) UC for cutting and machining. 5.Order details Contracts or orders placed in accordance with this document should include the following. a) This document number; b) Product Name; c) Alloy grade (or unified numerical designation); d) Weight (or quantity); e) Intended purpose (for rotating parts or load-bearing parts, see 4.1); f) Use the processing method (see 4.2); g) Smelting methods (see 6.1); h) Delivery status (see 6.2); i) Mechanical performance group (if required); j) Dimensions and specifications; k) Standard and multiple lengths (when needed); l) Items or specifications to be negotiated by both the supplier and the buyer and specified in the contract (if not specified, the supplier shall select them); m) Other special requirements (see 7.8). 6.Manufacturing process 6.1 Smelting Method The alloy grades and smelting methods for rotating parts shall conform to the provisions of Table 1, and the alloy grades and smelting methods for load-bearing parts shall conform to the provisions of Table 2. Alternatively, other smelting methods that meet the requirements of this document may be used, as agreed upon by both the supplier and the buyer. The smelting method adopted shall be specified in the contract and quality agreement. The quantity certificate states this. Table 1.Alloy smelting methods for rotating parts Brand electric arc furnace Electroslag remelting electric arc furnace Vacuum arc remelting Non-vacuum induction Electroslag remelting Vacuum induction Electroslag remelting Vacuum induction Vacuum arc remelting GH2130 - - - ● ● GH2132A - - - - ● GH2150A - - - - ● GH4033 ● ● ● ● ● GH4037 - - ● ● ● GH4049 - - - ● ● GH4133B - - - ● ● GH4220 - - - - ● Note. ● indicates the smelting method used. Table 2 Alloy Smelting Methods for Load-Bearing Components Grades of electric arc furnace electroslag remelting, non-vacuum induction electroslag remelting, vacuum induction electroslag remelting, vacuum induction vacuum arc remelting GH1015 ● ● ● - GH1035A ● ● ● - GH1139 ● ● - - GH1140 ● ● - ● GH2132 ● ● ● ● GH2150 - - ● - GH2150A - - - ● GH2696 - - - ● GH2901 - - ● ● GH3030 ● ● ● ● GH3039 ● ● ● ● GH3044 ● ● ● ● GH3128 - ● - - GH3536 ● ● - - GH3600 - ● ● - GH3625 - - ● ● GH4033 ● ● ● ● GH4099 - - ● ● ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 14993-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 14993-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 14993-2025_English with my colleagues?Answer: Yes. 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