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GB/T 25080-2022: Specification for niobium-titanium alloy billets and bars for superconducting applications
Status: Valid GB/T 25080: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 25080-2022 | English | 269 |
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Specification for niobium-titanium alloy billets and bars for superconducting applications
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GB/T 25080-2022
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| GB/T 25080-2010 | English | 559 |
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Niobium-titanium alloy billet, bar and rod for superconducting applications
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GB/T 25080-2010
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PDF similar to GB/T 25080-2022
Basic data | Standard ID | GB/T 25080-2022 (GB/T25080-2022) | | Description (Translated English) | Specification for niobium-titanium alloy billets and bars for superconducting applications | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H64 | | Word Count Estimation | 14,123 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 25080-2022: Specification for niobium-titanium alloy billets and bars for superconducting applications
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Specification for niobium-titanium alloy billets and bars for superconducting applications
ICS 77.120.50
CCSH64
National Standards of People's Republic of China
Replacing GB/T 25080-2010
Specification for niobium-titanium (Nb-Ti) alloy billets and rods for superconductivity
Published on 2022-10-12
2023-05-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
directory
Preface I
Introduction II
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Order Information 1
5 Products and Manufacturing 2
6 Chemical Composition 2
7 Physical Properties 3
8 Mechanical properties 3
9 Size tolerance 3
10 Workpiece quality, roughness and appearance3
11 Sampling 4
12 Test 4
13 Number Rounding Rule 4
14 Detection method 5
15 Acceptance 5
16 Rejection and Retrial 5
17 Quality certificate5
18 Product Mark 5
19 Packaging and Packaging Identification5
Appendix A (Normative) Ultrasonic Testing of Nb-Ti Alloy Billets and Bars for Superconductivity 7
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document replaces GB/T 25080-2010 "Nb-Ti Alloy Billets, Thick Rods and Thin Rods for Superconductivity", which is consistent with GB/T 25080-2010
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
--- Added specific provisions for the upper limit of the size of the defect. 3%D or 2.5mm (see 7.3);
--- Added "cracks", "black skin" and "scratch" to the list of "harmful defects", deleted "scars", "burrs" and "scuffs" (see 10.1,.2010
10.1 of the year edition);
--- Increased the detection method of surface roughness (see 14.6);
--- Change "the frequency of the conventional probe should be 2.25MHz~10MHz" to "the minimum nominal frequency of the probe should be 2.25MHz" (see
A.2.1.2, A.2.1.2 of the.2010 edition).
Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by the Chinese Academy of Sciences.
This document is under the jurisdiction of the National Superconductivity Standardization Technical Committee (SAC/TC265).
This document is drafted by. Western Superconducting Materials Technology Co., Ltd., Institute of Physics, Chinese Academy of Sciences, Plasma, Chinese Academy of Sciences
Institute of Physics, Northwest Institute of Nonferrous Metals, Institute of High Energy Physics, Chinese Academy of Sciences.
The main drafters of this document. Guo Qiang, Shang Jinjin, Yang Jing, Li Jie, He Yongsheng, Wang Ruilong, Zhang Kailin, Qin Jinggang, Xiong Xiaomei, Zhang Cuiping,
Xu Qingjin.
The previous versions of this document and its superseded documents are as follows.
---First published in.2010 as GB/T 25080-2010;
---This is the first revision.
Introduction
Niobium-titanium (Nb-Ti) superconducting material is by far the most widely used superconducting material. Nb-Ti alloy billets and bars are machined Nb-
The quality of the raw material of Ti superconducting wire plays a decisive role in the quality of the final Nb-Ti superconducting product. Therefore, in order to adapt to domestic super
To meet the needs of the rapid development of conductive technology, unify and standardize the technical requirements, test methods, and acceptance regulations for domestic Nb-Ti alloy billets and bars for superconductivity.
GB/T 25080-2010 needs to be revised, so as to form superconducting products that are basically consistent with foreign advanced standards
Specification standard for Nb-Ti alloy billets and bars.
This document was drafted with reference to the American Society for Testing and Materials Standard ASTMB884-2019 "Nb-Ti Alloy Rods for Superconductivity"
redefines.
Specification for niobium-titanium (Nb-Ti) alloy billets and rods for superconductivity
1 Scope
This document specifies the technical requirements, test methods, acceptance rules, marking and packaging of niobium-titanium (Nb-Ti) alloy billets and bars for superconductivity
Install and so on.
This document is applicable to Nb-Ti alloy billets and bars containing Ti46%~48% (mass fraction) for the manufacture of superconducting wires.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
GB/T 4340.1 Vickers Hardness Test for Metal Materials Part 1.Test Methods
GB/T 6060.2 Surface roughness comparison sample block grinding, turning, boring, milling, inserting and planing surface
GB/T 6394 Metal Average Grain Size Determination Method
GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values
GB/T 9445 Qualification and Certification of Nondestructive Testing Personnel
GB/T 18851.1 Nondestructive Testing Penetrant Testing Part 1.General
General technical conditions of JB/T 10061 A type pulse reflection ultrasonic flaw detector
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
thin rod
Products with a diameter of 10mm~60mm (excluding 60mm).
3.2
thick bar
Products with a diameter of 60mm~150mm (excluding 150mm).
3.3
billet bilet
Products with a diameter of not less than 150mm.
3.4
batch lot
All products produced from the same ingot with the same cross-sectional area and the same nominal metallurgical parameters.
4 Order Information
Orders placed under this document shall include the following.
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