GB/T 16555-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 16555-2025	RFQ	ASK	3 days	Chemical analysis of refractories containing carbon, silicon carbide or nitride	Valid
GB/T 16555-2017	839	Add to Cart	7 days	Chemical analysis of refractories containing carbon and silicon carbide or nitride	Valid
GB/T 16555-2008	220	Add to Cart	Auto, < 3 mins	Chemical analysis of refractories containing carbon and silicon carbide or nitride	Obsolete
GB/T 16555.1-1996	359	Add to Cart	3 days	Chemical analysis for silicon carbide refractories--Determination of silicon carbide--Absorb gravimetric method	Obsolete

Basic data

Standard ID: GB/T 16555-2025 (GB/T16555-2025)
Description (Translated English): Chemical analysis of refractories containing carbon, silicon carbide or nitride
Sector / Industry: National Standard (Recommended)
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 16555-2017

GB/T 16555-2017: Chemical analysis of refractories containing carbon and silicon carbide or nitride

---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.
Chemical analysis of refractories containing carbon and silicon carbide or nitride ICS 81.080 Q40 National Standards of People's Republic of China Replacing GB/T 16555-2008 Carbon, silicon carbide, nitride refractory Material chemical analysis methods 2017-09-07 Posted 2018-08-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 instruments and equipment 2 5 Sample Preparation 2 6 General 3 7 Test Report 4 8 Determination of heat treatment reduction 4 Burning reduction, determination of volatile 5 10 Determination of total carbon 6 11 Determination of free carbon content 11 Determination of the amount of silicon carbide 14 13 Total nitrogen, determination of total oxygen 18 14 Measurement of the amount of silicon nitride 21 15 Determination of free silicon content 21 16 Determination of free aluminum content 26 17 iron oxide content, the amount of alumina --- EDTA volumetric method (aluminum and aluminum continuous titration) 30 18 Measurement of the amount of oxide (silica, alumina, iron oxide, titanium dioxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, zirconium oxide, Chromium trioxide, manganese monoxide, phosphorus pentoxide) 33 Appendix A (Normative) Acceptance Analysis Program 36

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 16555-2008 "carbon, silicon carbide, nitride refractory chemical analysis method" and GB/T 16555- 2008 compared to the main technical changes are as follows. --- Increase the total oxygen detection project; modified free carbon, silicon carbide, calcium oxide, potassium oxide, sodium oxide, phosphorus pentoxide detection range Wai, reducing its detection limit (see Chapter 1); --- Modify the normative references, change or delete expired, void standards, an increase of GB/T 4513.2, GB/T 17732, GB/T 18930 (see Chapter 2); --- Increase the total oxygen content of the test project to allow poor (see Table 2); --- Remove the contents of Chapter 3, to quote GB/T 18930 "refractories terminology"; --- Modify the sample preparation, an increase of bitumen, resin refractory carbonation method (see 5.2.6); --- Indirect determination of the scope of the application of free carbon has been limited, carbonate material does not apply (see 11.4); --- Increased combustion infrared absorption method for the determination of free carbon (see 11.3); --- Increasing the nitrogen oxide analyzer determination of total oxygen in non-oxide samples (see 13.2); --- Supplementary to the reference standard for the determination of metal oxide elements by inductively coupled plasma atomic emission spectrometry Regulations (see Chapter 18). Please note that some of this document may be patentable. The issuing agencies of this document do not bear the responsibility of identifying these patents. This standard by the National Refractory Standardization Technical Committee (SAC/TC193) and focal point. This standard was drafted unit. Sinosteel Luoyang Refractory Research Institute Co., Ltd., Yixing Refractories Co., Ltd., Luoyang Lier resistance Fire Materials Co., Ltd. The main drafters of this standard. Cao Haijie, Xu Xiaoying, Liang Xian Lei, Yang Jinsong, Li Youqi, Liu Lei, Zhang Liyan, Wang Yanhui, Huang Fei, Liu Shifan, Chen Songlin, Xu Rulin. This standard replaces the standards previously issued as. --- GB/T 16555.1 ~ 16555.6-1996; --- GB/T 13245-1991; --- GB/T 13246-1991; --- GB/T 16555-2008. Carbon, silicon carbide, nitride refractory Material chemical analysis methods

1 Scope

This standard specifies the carbonaceous, silicon carbide, nitride refractory and chemical analysis of raw materials. The items analyzed in this standard are as follows. VOL, LOI, TC, FC, (SiC), total nitrogen (TN), total oxygen (TO), silicon nitride (Si3N4), free silicon (F.Si), free aluminum (SiO2), the amount of alumina (Al2O3), the amount of iron oxide (all valence Fe2O3), the amount of titanium dioxide (TiO2), the amount of calcium oxide (CaO) (MgO), K2O, Na2O, P2O5, ZrO2 (ZrO2) HfO2), the amount of manganese monoxide (all valence manganese as MnO), the amount of chromium oxide (Cr2O3). The scope of this standard analysis of the project in Table 1. Table 1 measurement range Analysis Project Scope /% Analysis Project Scope /% LOI/VOL ≤ 99 F.Si 0.1 ~ 20 TC 0.01 ~ 99 F.Al 0.1 ~ 20 FC 0.01 ~ 99 SiO2 ≥0.1 SiC 0.1 ~ 99 Al2O3 ≥0.1 TN ≤40 Fe2O3 ≤30 TO ≤5 TiO2 ≤5 Si3N4 0.1 ~ 99 MgO ≤95 CaO 0.01 ~ 60 Cr2O3 ≤40 K2O 0.01 ~ 5 ZrO2 HfO2 ≤80 Na2O 0.01 ~ 5 MnO ≤ 0.5 P2O5 0.01 ~ 5

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 223.69-2008 steel and alloy carbon content Determination of gas after combustion tube furnace gas volumetric method Unshaped refractory materials - Part 2. Sampling GB/T 4984 zirconium containing refractory chemical analysis method GB/T 5069 magnesium aluminum refractory chemical analysis methods GB/T 5070 chromium-containing refractory chemical analysis methods GB/T 6900 aluminum silicon refractory chemical analysis methods ......

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