YB/T 5231-2014 PDF English
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YB/T 5231: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| YB/T 5231-2014 | 220 | Add to Cart | Auto, 9 seconds. | Sealed iron-nickel-cobalt alloys with pe rmanent expansion | Valid |
| YB/T 5231-2005 | 239 | Add to Cart | 2 days | Sealed iron-nickel-cobalt alloy with permanent expansion | Obsolete |
| YB/T 5231-1993 | 199 | Add to Cart | 2 days | Glass sealed iron-nickel-cobalt alloys 4J29 and 4J44 technical requirement | Obsolete |
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YB/T 5231-2014: Sealed iron-nickel-cobalt alloys with pe rmanent expansion
---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/YBT5231-2014YB FERROUS METALLURGY INDUSTRY STANDARD ICS 77.140.99 H 58 Replacing YB/T 5231-2005 Sealed iron-nickel-cobalt alloys with permanent expansion Issued on: OCTOBER 14, 2014 Implemented on: APRIL 01, 2015 Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 3 1 Scope... 4 2 Normative references... 4 3 Ordering information... 6 4 Classification and designation... 7 5 Dimensions and shape... 7 6 Technical requirements... 7 7 Test methods... 11 8 Inspection rules... 12 9 Packaging, marking, quality certificate... 13 Appendix A (Informative) Typical expansion coefficient of alloys... 14 Sealed iron-nickel-cobalt alloys with permanent expansion1 Scope
This standard specifies the ordering details, classification and designation, dimensions, shape, technical requirements, test methods, inspection rules, packaging, marking, quality certificates for iron-nickel-cobalt glass sealing alloys 4J29 and 4J44 and ceramic sealing alloys 4J33, 4J34, 4J46. This standard is mainly applicable to sealed iron-nickel-cobalt alloys with permanent expansion used for mating and sealing with hard glass or ceramics in electrovacuum, semiconductor industry, and other application environments.2 Normative references
The 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 223.3 Methods for chemical analysis of iron, steel and alloy - The diantipyryl methane phosphomolybdate gravimetric method for the determination of phosphorus content GB/T 223.11 Iron, steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method GB/T 223.18 Methods for chemical analysis of iron steel and alloy - The sodium thiosulfate separation iodometric method for the determination of copper content GB/T 223.19 Methods for chemical analysis of iron, steel and alloy - The neocuproine-chloroform extraction photometric method for the determination of copper content GB/T 223.20 Methods for chemical analysis of iron steel and alloy - The Potentiometric titration method for the determination of cobalt content GB/T 223.21 Methods for chemical analysis of iron steel and alloy - The 5-Cl- PADAB spectrophotometric method for the determination of cobalt content GB/T 223.22 Methods for chemical analysis of iron, steel and alloy - The nitroso- materials GB/T 4340.1 Metallic materials - Vickers hardness test - Part 1.Test method GB/T 5777 Seamless steel pipe and tubing methods for ultrasonic testing GB/T 6394 Metal-methods for estimating the average grain size GB/T 8651 Metal plates - Flaw detection method by the ultrasonic plate wave GB/T 14985-2007 General rules of dimensions, shape, surface, quality, testing method and inspection for expansion alloys GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition GB/T 20123 Steel and iron - Determination of total carbon and sulfur content Infrared absorption method after combustion in an induction furnace (routine method) YB/T 5242 General rules of packaging, marking and quality certification for precision alloys YB/T 5321-2006 Determination of hermeticity of expansion alloys3 Ordering information
Contracts for orders placed according to this standard shall include the following. a) Standard number; b) Product name; c) Designation; d) Smelting method (see 6.1); e) Weight or quantity of delivery; f) Dimensions and shape; g) Delivery condition (see 6.3); h) Non-destructive testing methods and levels (see 6.10); i) Special requirements.4 Classification and designation
Alloys are classified according to their delivery condition as follows. Soft state (S); Hard state (H); 1/4 Hard state (H1/4); 1/2 Hard state (H1/2); 3/4 Hard state (H3/4); Deep drawing (DQ); Cold drawing (WCD); Cold drawing and polishing (WCDP); Hot rolled state (WHR); Hot forged state (WHF).5 Dimensions and shape
The dimensions, shape, permissible deviations of the alloy materials shall conform to the relevant provisions of GB/T 14985-2007.6 Technical requirements
6.1 Smelting method Alloys may be smelted using a vacuum induction furnace, a non-vacuum induction furnace, or an electric arc furnace, or other smelting methods that meet the requirements of this standard. If the purchaser has requirements for the smelting method, these shall be specified in the contract. 6.2 Designation and chemical composition The designation and chemical composition (smelting analysis) of the alloy shall conform to the provisions of Table 1.Provided the average coefficient of linear expansion meets the requirements of this standard, deviations from the specified range for nickel and cobalt content are permissible. 6.3 Delivery condition ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
