GB/T 4334.6-2015 English PDF

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GB/T 4334.6-2015: Test method for stainless steels in 5% sulfuric acid
Status: Valid

GB/T 4334.6: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4334.6-2015	109	Add to Cart	3 days	Test method for stainless steels in 5% sulfuric acid	Valid
GB/T 4334.6-2000	239	Add to Cart	3 days	Method of 5 per cent sulfuric acid test for stainless steels	Obsolete
GB/T 4334.6-1984	RFQ	ASK	3 days	Stainless steels--5 percent sulfuric acid corrosion test	Obsolete

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GB/T 3246.1   GB/T 4334   GB/T 2972   GB/T 5776   

Basic data

Standard ID: GB/T 4334.6-2015 (GB/T4334.6-2015)
Description (Translated English): Test method for stainless steels in 5% sulfuric acid
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H25
Classification of International Standard: 77.06
Word Count Estimation: 5,567
Date of Issue: 2015-09-11
Date of Implementation: 2016-06-01
Older Standard (superseded by this standard): GB/T 4334.6-2000
Quoted Standard: GB/T 625; GB/T 2481.1; GB/T 2481.2; GB/T 8170; GB/T 16545
Regulation (derived from): National Standard Announcement 2015 No.25
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 sample stainless steel 5% sulfuric acid corrosion test, the test solution, test equipment, test conditions and procedures, evaluation and test report test results. This Standard applies to the determination of molybdenum-containing austenitic stainless steel in 5% sulfuric acid solution corrosion weight loss, in order to test the corrosion resistance of stainless steel uniformly. Other stainless steel can also be implemented by reference.

GB/T 4334.6-2015: Test method for stainless steels in 5% sulfuric acid

---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.
(Stainless Steel 5% sulfuric acid corrosion test) ICS 77.060 H25 National Standards of People's Republic of China Replacing GB/T 4334.6-2000 Stainless steel 5% sulfuric acid corrosion test Testmethodforstainlesssteelsin5% sulfuricacid Issued on. 2015-09-11 2016-06-01 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 4334.6-2000 "stainless steel 5% sulfuric acid corrosion test methods", compared with the GB/T 4334.6-2000 main To technical changes are as follows. --- Increasing the sample roughness requirements; --- Increasing the specific method of preparation of 5% sulfuric acid; --- Replace the test device schematic, using a more general test equipment; --- Modify the sample weighing accuracy before and after the test, the accuracy increased to 0.1mg; --- In Chapter 6, "Test conditions and procedures," added reference standard GB/T 16545; --- GB/T 4334.1 ~ GB/T 4334.5 has been GB/T 4334-2008 instead. The standard proposed by China Iron and Steel Association Committee. This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized. This standard was drafted. Jiangsu ship Metal Materials Quality Supervision and Inspection Center of Metallurgical Industry Information Standards Institute, Jiangyin Zhongnan Heavy Engineering Co., Ltd., Jiangyin Fangyuan ring forging Flange Co., Steel Research Institute, Shougang Corporation. The main drafters of this standard. Li Ying, Wang Shuqiang, Hou Jie, Feng Xiumei, Chen Shaozhong, Zhaoyuan Zhong, Han Feng, Wu Zhaohui. GB/T 4334.6 Suo standard replaces the previous editions are. --- GB/T 4334.6-1984, GB/T 4334.6-2000. Stainless steel 5% sulfuric acid corrosion test

1 Scope

This standard specifies the corrosion test samples of stainless steel 5% sulfuric acid test solution, test equipment, test conditions and procedures, test results Evaluation and test report fruit. This standard applies to the determination of molybdenum-containing austenitic stainless steel in 5% sulfuric acid solution corrosion weight loss, in order to test the corrosion resistance of stainless steel uniform can. Other stainless steel can also be implemented by reference.

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 625 chemical reagent sulfuric acid GB/T 2481.1 Bonded abrasives grain size composition testing and labeling - Part 1. coarse abrasive F4 ~ F220 GB/T 2481.2 Bonded abrasives grain size composition testing and marking Part 2. Powder F230 ~ F1200 GB/T 8170 Revised data indicate about rules and limit values \u200b\u200band judgment Removal of corrosion products from corrosion specimens GB/T 16545 of metals and alloys

3 Sample

Surface area of \u200b\u200bthe sample was 3.1 10cm2 ~ 30cm2, a sample from the test material is cut out, and rolling or forging a direction perpendicular to the area should be Not more than one-half of the sample surface area. Sampling and sample preparation methods castings, welded metal and other materials, the two sides negotiated by supply and demand. 3.2 cutting method using the principle of on-line sample cutting or sawing, such as shear, the need to cut cross section of cutting or polishing method Reprocessed to remove the sheared affected area. Oxide skin attached, to get rid of by cutting or grinding the sample 3.3, sample processing method should not produce tissue and surface stress condition influences. 3.4 sample was consistent with sandpaper or emery cloth GB/T 2481.1 and GB/T 2481.2 predetermined sequential grinding. Avoid sample heating The case of the sample was polished, and finally with a particle size of not less than the F320 water sandpaper wet grinding, the sample surface roughness after processing Ra value is not more than 0.8μm. 3.5 samples after grinding, with a vernier caliper measurements, and then with a suitable solvent or detergent (non-chloride) to the oil, and finally with distilled water Or washed with deionized water and dried.

4 test solution

First into 500mL of distilled or deionized water in a beaker, then add 29mL line with GB/T 625 provisions of superior grade pure sulfuric acid (Density 1.84g/mL), and then adding distilled water or deionized water into 1000mL solution, the concentration of the test solution was 5.0% ± 0.1% (Mass fraction), the corresponding density at 20 ℃ for 1.03103g/mL ~ 1.03237g/mL. ......

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