GB/T 1234-2012 English PDF

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GB/T 1234-2012: High resistance alloys for electrical heating
Status: Valid

GB/T 1234: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 1234-2012	559	Add to Cart	5 days	High resistance alloys for electrical heating	Valid
GB/T 1234-1995	879	Add to Cart	6 days	High resistance alloys for electrical heating	Obsolete
GB 1234-1985	719	Add to Cart	5 days	High resistance alloys for electrical heating	Obsolete

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Basic data

Standard ID: GB/T 1234-2012 (GB/T1234-2012)
Description (Translated English): High resistance alloys for electrical heating
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H57
Classification of International Standard: 77.140.99
Word Count Estimation: 24,282
Older Standard (superseded by this standard): GB/T 1234-1995
Quoted Standard: GB/T 223.3; GB/T 223.5; GB/T 223.8; GB/T 223.9; GB/T 223.11; GB/T 223.23; GB/T 223.25; GB/T 223.26; GB/T 223.28; GB/T 223.40; GB/T 223.58; GB/T 223.59; GB/T 223.60; GB/T 223.61; GB/T 223.62; GB/T 223.63; GB/T 223.64; GB/T 223.67; GB/T 223.68; GB/T 223.69;
Regulation (derived from): National Standards Bulletin No. 28 of 2012
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the high electric resistance alloy grades, order contents, size, shape, weight and tolerances, technical requirements, test methods, inspection rules, packaging, marking and quality certification, etc. This standard applies to the

GB/T 1234-2012: High resistance alloys for electrical heating

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
High resistance alloys for electrical heating ICS 77.140.99 H57 National Standards of People's Republic of China Replacing GB/T 1234-1995 High electric resistance alloy Issued on. 2012-11-05 2013-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 1234-1995 "high electric resistance alloy." This standard compared with GB/T 1234-1995, the main changes are as follows. --- Increasing the "order content" (see Chapter 3); --- Remove the size requirements for iron chrome aluminum 0Cr27Al7Mo2 separate provision (see 1995 edition of the Table 1); --- Rod specifications adjusted to 5.50mm ~ 12.00mm by the 8.0mm ~ 10.0mm, bars specifications from 12.0mm ~ 30.0mm adjusted to 6.00mm ~ 150.0mm, adjusted by the width of the strip to 250.0mm 300.0mm, and a corresponding increase Plus the size of the allowable deviation of the provisions (see Tables 1 and 2, 1995 edition of Tables 1 and 2); --- Minimum diameter alloy wire is adjusted by the 0.03mm to 0.02mm, and a corresponding increase in the size of the allowable deviation of the provisions (See Tables 1 and 3, 1995, edition of the Tables 1 and 3); --- Increased higher precision electric resistor of the thickness of the strip as well as the requirements of dimensional accuracy of the sheet shape (see Table 5 and Table 6, 4.3); --- Adjusted alloy material weight requirements (see 42, 1995, version 3.2.); --- Adds alloy foil filaments and non-metallic inclusions control requirements (see 5.9); --- Increased 0Cr20Al6RE and 0Cr24Al6RE two alloy grades and related technical requirements, canceled 0Cr21Al6 gold medal Number (see Table 11, the 1995 edition Table 9); --- Adjust some Alloy chemical composition (see Table 11, the 1995 edition Table 9); --- Remove the resistance value range per meter, per meter increased resistance values \u200b\u200band tolerances, which expanded from 1.00mm diameter upper limit to 5.50mm (see table 14, 1995 Edition Table 12); --- Adds alloy recommended heat treatment system (see 5.5.1); --- Alloy increases the mechanical performance requirements (see 5.5.2); --- Modify the inspection rules, added a "type test" (see Chapter 7, Chapter 6, 1995 edition); --- Revised Appendix A and Appendix B of individual alloy and the maximum use temperature correction factor, and a corresponding increase in new grades of resistance Temperature correction factor and the main physical properties (see Appendix A and Appendix B, 1995 edition of Appendix A and Appendix B). The standard proposed by China Iron and Steel Association. This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized. This standard was drafted. Jiangsu Xinhua Alloy Electric Co., Ltd., Beijing Shougang Co., Ltd. Jitai new materials, metallurgical industry-standard information Associate Research Institute, National Stainless Steel Products Quality Supervision and Inspection Center. The main drafters of this standard. Huatai Feng, Chen Ping, Wang Shuping, Luan Yan, Li Gang, Huapeng, wear strong. This standard replaces the standards previously issued as follows. --- GB/T 1234-1976, GB/T 1234-1985, GB/T 1234-1995. High electric resistance alloy

1 Scope

This standard specifies the grades of high electric resistance alloys, ordering the content, size, shape, weight and tolerance, technical requirements, test side Method, inspection rules, packaging, marking and quality certificate. This standard applies to the manufacture of various electric heating element and a resistance element with general drawing, rolling and forging of nickel-chromium, nickel, chromium and iron chromium aluminum high Electric resistance alloy wire, plate and strip, rod and wire rod (hereinafter referred to as alloy material).

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 223.3 steel and alloy chemical analysis method two antipyrine methane phosphomolybdate gravimetric method for the determination of phosphorus content GB/T 223.5 steel measuring soluble silicon and total silicon content reduced silicon molybdate salt spectrophotometric method GB/T 223.8 Determination of aluminum content in steel and alloy chemical analysis of sodium fluoride separation -EDTA titration GB/T 223.9 steel and aluminum alloys - Determination of chromium content Azure S Spectrophotometry Determination of GB/T 223.11 steel and alloy chromium content of visual titration or potentiometric titration GB/T 223.23 steel and alloy - Determination of nickel content dimethylglyoxime spectrophotometry Determination of nickel content GB/T 223.25 Methods for chemical analysis of iron, steel and alloy dimethylglyoxime gravimetric method GB/T 223.26 steel and alloy - Determination of molybdenum content - Thiocyanate spectrophotometric GB/T 223.28 Determination of molybdenum steel and alloy chemical analysis method α- benzoin gravimetric method GB/T 223.40 Determination of steel and alloy niobium content sulphochlorophenol S spectrophotometry GB/T 223.58 Methods for chemical analysis of iron, steel and alloys of sodium arsenite - sodium nitrite determination of manganese content titration GB/T 223.59 Steel and Alloy Determination of phosphorus content by bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometry GB/T 223.60 Methods for chemical analysis of iron, steel and alloy perchloric acid dehydration gravimetric method for the determination of silicon content Determination of phosphorus content GB/T 223.61 Methods for chemical analysis of iron, steel and alloy The ammonium phosphomolybdate volumetric method GB/T 223.62 Methods for chemical analysis of iron, steel and alloy butyl acetate extraction spectrophotometric determination of phosphorus content GB/T 223.63 Methods for chemical analysis of iron, steel and alloy The sodium (potassium) for Determination of amount GB/T 223.64 steel and alloy manganese content - Flame Atomic Absorption Spectrometry GB/T 223.67 steel and alloy sulfur content - Methylene blue spectrophotometric method Determination of sulfur content of potassium iodate titration method after GB/T 223.68 Methods for chemical analysis of iron, steel and alloy tube furnace combustion GB/T 223.69 after carbon and alloy steel - Determination of the pipe furnace combustion gas volumetric method GB/T 223.70 Determination of steel and alloy iron content phenanthroline spectrophotometry After the determination of carbon content - Gravimetric method GB/T 223.71 Methods for chemical analysis of iron, steel and alloy tube furnace combustion GB/T 223.72 steel and alloy sulfur content - Gravimetric method Determination of steel GB/T 223.73 and alloy iron content of titanium trichloride - potassium dichromate titration GB/T 223.79 multi-element steel Determination X- ray fluorescence spectrometry (Routine method) After GB/T 223.85 steel and alloy sulfur content induction furnace combustion infrared absorption method After the determination of GB/T 223.86 total carbon content and alloy steel induction furnace combustion infrared absorption method ......

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