ASTM E3346-22 PDF
Standard Guide for Combustion, Inert Gas Fusion and Hot Extraction Instruments for use in Analyzing Metals, Ores, and Related Materials
Standard Guide for Combustion, Inert Gas Fusion and Hot Extraction Instruments for use in Analyzing Metals, Ores, and Related Materials
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 10
- Дата публикации:
- 1 декабря 2022 г.
- Издание:
- E3346
- ICS:
- 77.040.30
SIGNIFICANCE AND USE 5.1 The chemical measurement processes covered by this guide are used for determination of Carbon, Sulfur, Nitrogen, Oxygen and Hydrogen in metals, ores and related materials. A test method utilizing this guidance is used to test such materials, and also form the basis for quality assurance of these materials. Thus, it is economically and scientifically critical that these instruments be understood by the laboratories that use them. 5.2 It is assumed that all who use this guide will be trained analysts, capable of performing common laboratory procedures skillfully, and safely. It is expected that any work will be performed in a properly equipped laboratory. 5.3 It is expected that the laboratory will prepare their own work procedures for any of the information described in this guide. 5.4 This guide contains numerous references to “manufacturer’s recommendations”. The user of this guide is expected to refer to the instrument operation manual for the specific instrument being used or consult directly with the manufacturer to obtain instructions or recommendations. 5.5 This guide stresses the conservation of certified reference materials (CRMs). CRMs should not be used for drift checks or conditioning measurments. Other materials should be developed and used for these operations. SCOPE 1.1 This guide covers information for using Combustion, Inert Gas Fusion and Hot Extraction instruments to determine the mass fraction of the non-metallic elements Carbon, Sulfur, Nitrogen, Oxygen and Hydrogen in metals, ores and related materials. 1.2 This guide does not specify all the operating conditions because of the differences among different manufacturer’s instruments. Laboratories should follow instructions provided by the manufacturer of the instrument. 1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 The information in this guide is contained in the sections indicated as follows: Sections Carbon/Sulfur by Combustion/Infrared Detection 14 – 19 Nitrogen/Oxygen by Inert Gas Fusion/Thermal Conductivity and Infrared Detection 20 – 25 Hydrogen by Inert Gas Fusion Instrumental Measurement and Hot Extraction/Various Detection Cell Technology 26 – 31 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Abstract
Overview
ASTM E3346-22: Standard Guide for Combustion, Inert Gas Fusion, and Hot Extraction Instruments for Analyzing Metals, Ores, and Related Materials provides comprehensive guidance on the use of instrumental techniques for determining the mass fractions of non-metallic elements, specifically carbon, sulfur, nitrogen, oxygen, and hydrogen. These analytical methods are essential for laboratories engaged in quality control, research, and certification of metals, ores, and similar materials in industrial and scientific applications.
This standard outlines best practices for using combustion, inert gas fusion, and hot extraction instruments, focusing on achieving accurate, reliable, and repeatable results while emphasizing safety, quality control, and proper instrument maintenance.
Key Topics
- Measurement Techniques: Guidance on the determination of carbon and sulfur (by combustion/infrared detection), nitrogen and oxygen (by inert gas fusion/thermal conductivity and infrared detection), and hydrogen (by inert gas fusion or hot extraction with various detection cell technologies).
- Instrument Setup and Use: Detailed steps for equipment assembly, instrument preparation, leak testing, and the importance of following the manufacturer’s operating instructions.
- Sample Preparation: Practical recommendations for preparing specimens and handling different sample forms (solids, powders, chips), including cleaning, surface preparation, and flux utilization.
- Calibration and Drift Correction: Procedures for instrument calibration using certified reference materials (CRMs), reference materials (RMs), and the implementation of drift correction and control charts for maintaining analytical accuracy.
- Quality Assurance: Emphasis on the conservation of CRMs, development of in-house RMs, and adherence to established laboratory procedures for continuous quality improvement.
- Safety Practices: User responsibility for ensuring a safe and compliant laboratory environment and observance of relevant safety and environmental regulations.
Applications
The practical value of ASTM E3346-22 extends to a variety of fields that depend on precise measurement of non-metallic elements in metallic matrices. Key applications include:
- Metals Manufacturing and Processing: Ensuring alloy composition meets specifications for structural performance, corrosion resistance, and other critical properties.
- Mining and Ore Evaluation: Accurate determination of elemental content in ores for resource assessment, beneficiation, and process optimization.
- Quality Assurance Laboratories: Supporting the certification, validation, and cross-verification of metal and ore samples as part of broader quality control regimes.
- Research and Development: Providing foundational methodologies for the development of new materials and the improvement of existing alloys.
- Regulatory Compliance: Meeting requirements for reporting and documentation in line with international trade and safety standards.
Using ASTM E3346-22 enhances data integrity, operational safety, and compliance with both customer and legal requirements, making it an essential guideline for organizations operating high-precision analytical laboratories.
Related Standards
ASTM E3346-22 references and complements several other ASTM standards and international guidelines crucial to chemical analysis and laboratory best practices, including:
- ASTM E50: Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
- ASTM E55, E88, E1806: Practices and procedures for sampling nonferrous and ferrous metals and alloys
- ASTM E135: Terminology relating to analytical chemistry for metals, ores, and related materials
- ASTM E882: Guide for accountability and quality control in the chemical analysis laboratory
- ASTM E2857: Guide for validating analytical methods
- ASTM E2972: Guide for production, testing, and value assignment of in-house reference materials
By following ASTM E3346-22 in conjunction with these related standards, laboratories ensure robust analytical processes, superior reproducibility, and alignment with global quality expectations for chemical measurements in metals and ores.
Keywords: ASTM E3346-22, combustion analysis, inert gas fusion, hot extraction, non-metallic elements, metals analysis, carbon sulfur nitrogen oxygen hydrogen, analytical instrumentation, quality assurance, chemical analysis standards, laboratory best practices.
Технические детали
- Технический комитет
- E01 - Analytical Chemistry for Metals, Ores, and Related Materials
- SKU
- ASTM E3346-22
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