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GB/T 5124.2-2008 English PDF

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Q: Should I purchase the latest version GB/T 5124.2-2008?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5124.2-2008 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.

US$114.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 5124.2-2008: Methods for chemical analysis of hard metals -- Determination of insoluble (free) carbon content -- Gravimetric method
Status: Valid

GB/T 5124.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 5124.2-2008	114	Add to Cart	3 days	Methods for chemical analysis of hard metals -- Determination of insoluble (free) carbon content -- Gravimetric method	Valid
GB/T 5124.2-1985	199	Add to Cart	2 days	Methods for chemical analysis of hardmetals--The gravimetric method for the determination of free (insoluble) carbon content	Obsolete

Similar standards

GB/T 4295 GB/T 7160 GB/T 23367.2 GB/T 5124.5 GB/T 5124.4 GB/T 5124.3

Basic data

Standard ID: GB/T 5124.2-2008 (GB/T5124.2-2008)
Description (Translated English): Methods for chemical analysis of hard metals -- Determination of insoluble (free) carbon content -- Gravimetric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H71
Classification of International Standard: 77.120.99
Word Count Estimation: 6,653
Date of Issue: 2008-03-31
Date of Implementation: 2008-09-01
Older Standard (superseded by this standard): GB/T 5124.2-1985
Quoted Standard: GB/T 5124.1
Adopted Standard: ISO 3908-1985, IDT
Regulation (derived from): National Standard Approval Announcement 2008 No.5 (Total No.118)
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 method for the determination of carbides and carbide insoluble (free) carbon content. This section applies to hafnium, tungsten and zirconium carbide, , vanadium, niobium, , pre-sintered titanium mix molybdenum carbide and bonded Jinsha these households (no lubricant), and from these carbide production of all grades of and sintered carbide insoluble (free) carbon content was measured. Measuring range: 0. 02% to 0. 05 %.

GB/T 5124.2-2008: Methods for chemical analysis of hard metals -- Determination of insoluble (free) carbon content -- Gravimetric method

---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.
Methods for chemical analysis of hardmetals. Determination of insoluble (free) carbon content. Gravimetric method ICS 77.120.99 H71 National Standards of People's Republic of China GB/T 5124.2-2008/ISO 3908. 1985 Replacing GB/T 5124.2-1985 Carbide chemical analysis Insoluble (free) carbon content - Gravimetric method (ISO 3908. 1985, Hardmetals-Determinationofinsoluble (free) carboncontent-Gravimetricmethod, IDT) Posted 2008-03-31 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 5124 "Methods for chemical analysis Carbide" is divided into four parts. --- GB/T 5124.1 Carbide chemical analysis of total carbon content - Gravimetric method --- GB/T 5124.2 Carbide chemical analysis of insoluble (free) carbon content - Gravimetric method --- GB/T 5124.3 Determination of cobalt content Carbide chemical analysis of potentiometric titration --- GB/T 5124.4 Carbide chemical analysis of peroxide spectrophotometric determination of titanium content This is Part 2. This part identical with ISO 3908. 1985 "Carbide insoluble (free) carbon content - Gravimetric method." For ease of use, this section made the following editorial changes. --- With "this Part" instead of "this International Standard"; --- With a decimal point instead of as a decimal in the international standards ",". ","; --- Remove the cover of the international standards, foreword. This Part replaces GB /"the determination of free (insoluble) carbon content - Gravimetric method chemical carbide" T 5124.2-1985. This portion of the GB/T 5124.2-1985 main changes are as follows. --- Increase the "scope", "Normative references" and other normative general elements. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee centralized. This section Zhuzhou Cemented Carbide Group Co., Ltd., China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting. The main drafters of this section. Guo Peng, Jiang Yafang, Zhu Jie, Zhang Jie, Zhangjiang Feng. This part of the standard replaces the previous editions are. --- GB/T 5124.2-1985. GB/T 5124.2-2008/ISO 3908. 1985 Carbide chemical analysis Insoluble (free) carbon content - Gravimetric method

1 Scope

This section specifies the determination method of carbides and carbide of insoluble (free) carbon content. This section applies to hafnium, molybdenum, niobium, tantalum, titanium, vanadium, tungsten and zirconium carbide, carbide and mixtures of these metal bonding (no lubricant) And determining from these pre-sintered carbide production of all grades of sintered carbide and insoluble (free) carbon content. Determination Fan Wai. 0.02% to 0.5%.

2 Normative references

The following documents contain provisions which, through reference to GB/T 5124 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. Determination of GB/T 5124.1 Carbide chemical analysis of total carbon content - Gravimetric method

3 PRINCIPLE OF THE METHOD

Decomposing carbide determined by gravimetric method does not dissolve carbon.

4 Reagents

Always use analytical reagent, distilled water or water of equivalent purity during the analysis. Nitrate 4.1 (ρ1.20g/mL).2000mL plus nitrate (ρ1.42g/mL) in 3000mL of water. 4.2 Hydrofluoric acid (ρ1.12g/mL).

5 Instruments

General laboratory equipment, and. 5.1 GB/T 5124.1 set forth in the instrument. 5.2 platinum dish. a capacity of 200mL. 5.3 filter device. ceramic filter apparatus equipped with refractory or fiber mats or refractory powders Gooch crucible. NOTE. If necessary, the refractory material under strong oxidizing conditions at 800 ℃ ~ 1000 ℃ pretreatment, for at least 3h, and stored in a dry Vessel. 5.4 vacuum filtration apparatus.

6 Sampling

6.1 research body does not affect the chemical composition of the sample material in the sample is pulverized to a powder, and through 180μm sieve. 6.2 Take samples were analyzed in duplicate or triplicate. GB/T 5124.2-2008/ISO 3908. 1985 ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 5124.2-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 5124.2-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 5124.2-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 5124.2-2008_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+ countries

Question 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 5124.2-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 5124.2-2008 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.