GB/T 25932-2025 English PDFUS$699.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 25932-2025: Cast superalloy - Master alloys - Equiaxed crystal Status: Valid GB/T 25932: Historical versions
Basic dataStandard ID: GB/T 25932-2025 (GB/T25932-2025)Description (Translated English): Cast superalloy - Master alloys - Equiaxed crystal Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: H44 Classification of International Standard: 77.140.20 Word Count Estimation: 35,314 Date of Issue: 2025-08-29 Date of Implementation: 2026-03-01 Older Standard (superseded by this standard): GB/T 25932-2010, GB/T 31309-2020 Issuing agency(ies): State Administration for Market Regulation; Standardization Administration of China GB/T 25932-2025: Cast superalloy - Master alloys - Equiaxed crystal---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/GBT25932-2025ICS 77.140.20 CCSH44 National Standards of the People's Republic of China Replaces GB/T 25932-2010 and GB/T 31309-2020 Casting high-temperature alloy master alloy equiaxed crystals Published on 2025-08-29 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 25932-2010 "General Technical Conditions for Casting High-Temperature Alloy Master Alloys" and GB/T 31309-2020 "Casting..." "Method for Calculating Electron Vacancy Numbers in High-Temperature Alloys". This document is based on GB/T 25932-2010 and integrates the content of GB/T 31309-2020. Compared with GB/T 25932-2010, the main technical changes are as follows, apart from structural adjustments and editorial modifications. a) Added 49 grades of equiaxed crystal casting high-temperature alloy master alloys and related technical requirements (see Chapter 6); b) A method for calculating the number of electron vacancies in cast high-temperature alloys 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. Beijing Steel Research Institute of Advanced Technology Co., Ltd., Beijing Institute of Aeronautical Materials Co., Ltd., and Ansteel Technology. Joint-stock company, Hebei Steel Research Institute Dekai Technology Co., Ltd., Metallurgical Industry Information and Standardization Research Institute, Jiangsu Longda Superalloy Aviation Materials Co., Ltd. Jiangsu Metering Special Alloy Co., Ltd., Beijing Beiye Functional Materials Co., Ltd., Jiangsu Qina New Materials Technology Co., Ltd., and Shanxi Dongruitai New Materials Technology Co., Ltd. The main drafters of this document are. Wu Baoping, Wang Kai, Zhang Huaxia, Zhang Chunxiao, Yan Chengming, Chen Huixia, Wang Bo, Li Zhigang, Li Huiwei, and Jin Kaifeng. Ma Zhonggang, Chen Linjun, Li Liang, Wang Zhen, Zhao Wenqian, Yu Lianxu, Wang Lin. The release history of this document and the document it replaces is as follows. ---First published in.2010 as GB/T 25932-2010; ---This is the first revision, incorporating the content of GB/T 31309-2020. Casting high-temperature alloy master alloy equiaxed crystals 1.Scope This document specifies the ordering details, manufacturing process, technical requirements, inspection rules, packaging, and marking of cast high-temperature alloy equiaxed crystal master alloys. The quality certificate, transportation, and storage procedures describe the corresponding test methods. This document applies to equiaxed master alloys (hereinafter referred to as master alloys) of cast high-temperature alloys for general precision castings.2 Normative referencesThe 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 amendments) applies. This document. 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 230.1 Metallic materials - Rockwell hardness test - Part 1.Test method GB/T 2039 Metallic materials - Uniaxial tensile creep test method GB/T 11261 Determination of Oxygen Content in Iron and Steel - Pulse Heating Inert Gas Melting-Infrared Absorption Method GB/T 20123 Determination of Total Carbon and Total Sulfur Content in Iron and Steel - Infrared Absorption Method After Combustion in a High-Frequency Induction Furnace GB/T 20127 (all parts) Determination of trace elements in iron and steel and alloys GB/T 34209 Determination of Multi-Element Content in Stainless Steel by Glow Discharge Atomic Emission Spectrometry GB/T 38939 Determination of Multi-Element Content in Nickel-Based Alloys by Spark Discharge Atomic Emission Spectrometry (Conventional Method) GB/T 45447 Recycled Casting High-Temperature Alloy Raw Materials Technical Requirements for Raw Material Selection in HB/Z131 Cast High-Temperature Alloy Chemical Analysis Methods for HB5220 (All Parts) High-Temperature Alloy Test method for slag floating of HB5406 casting high-temperature alloy ingot HB20241 (All Parts) High Temperature Alloy Chemical Composition Spectroscopic Analysis Method 3.Terms and Definitions This document does not contain any terms or definitions that need to be defined. 4.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; d) Raw material acceptance standards or technical agreements. 5.Manufacturing process 5.1 Materials and Smelting Methods 5.1.1 Raw materials 5.1.1.1 The use of raw materials shall comply with the provisions of HB/Z131. 5.1.1.2 The use of recycled or reclaimed high-temperature alloy raw materials is permitted. Reclaimed high-temperature alloy raw materials shall comply with the requirements of GB/T 45447. The specific proportion and method of use of raw materials or recycled high-temperature alloy raw materials shall be determined by the purchaser based on the technical requirements of the parts and shall be specified in the contract. 5.1.2 Smelting Method The master alloy should be melted using vacuum induction melting, and the melting process should comply with the specifications in the dedicated process technology documents. If the buyer has special requirements, they can be provided by [the relevant authority/company]. The agreement is determined through negotiation between the supply and demand parties. 5.2 Delivery Status The master alloy is delivered in the as-cast state. 6.Technical Requirements 6.1 Grade and Chemical Composition The alloy grade and chemical composition shall conform to the provisions of Table 1.If the buyer has special requirements, they shall be specified in the contract. 6.2 Mechanical Properties 6.2.1 Cast test bars according to the specific process technical documents. If otherwise specified, test bars of other forms may be cast. 6.2.2 The mechanical properties of the test bar shall conform to the provisions of Table 2 and Table 3. 6.3 Number of electron vacancies If required by the buyer, the supplier shall provide the number of electron vacancies in the alloy. Acceptance criteria shall be determined through negotiation between the supplier and the buyer and specified in the contract. 6.4 Scum The master alloy should undergo a slag test, and the slag area percentage should not exceed 2%. When there are special requirements, they shall be determined through negotiation between the supplier and the buyer. Specify this in the contract. 6.5 Surface Quality 6.5.1 The surface should be free from inclusions and honeycomb-like defects such as adhered iron, refractory materials, and slag. 6.5.2 The primary shrinkage cavity of the master alloy should be removed, and the diameter of any remaining secondary shrinkage cavity should not exceed 10 mm. The cavity should be free of residue and contaminants. When... When there are special requirements for the size of the alloy rod, the secondary shrinkage cavity size requirement shall be determined by the supplier and the buyer through negotiation and shall be specified in the contract. 6.5.3 The surface should be 100% treated by grinding or machining, and the treated surface should have a metallic luster. Local grinding is allowed to remove deeper imperfections. The defects. Books Books .0 /0 ./ .0 /0 4/3 0.5 .0 4/3 0.5 .1 0/ 0.5 0.8 4/3 4/3 0.5 0.6 4/3 4/8 0.5 0.6 4/8 0.5 .2 4/3 0/ 0.5 0/ .0 /3 0.5 /3 4/3 0.5 .0 4// 0.5 .0 4// 0.5 .0 0.5 .0 2 > 4/3 0.5 /1 ./ 5/ 40/ 4/3 0.5 /1 ./ 5/ 40/ 4/3 4/3 0.5 /5 ./ 5/ 4/3 0/ 4/3 0.5 0.5 40/ 0/ 4/3 4/3 0.5 .1 4/3 4/3 0.5 4/3 4/3 0.5 0.5 43/ 43/ 0/ ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 25932-2025_English be delivered?Answer: Upon your order, we will start to translate GB/T 25932-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 25932-2025_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 25932-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 25932-2025?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 25932-2025 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
