1.1 本规程涵盖了极限分析这一术语，因为它适用于煤和焦炭的分析。所获得的信息旨在供适用行业普遍使用，为评估、选矿或其他目的提供依据。 1.2 以国际单位制表示的数值应视为标准。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.2.1 所有百分比均为质量分数百分比。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 在标题下以特定格式总结灰分质量分数和有机成分的质量分数， 极限分析 ，为比较煤或焦炭提供了一个方便而统一的系统。这个表格与的表格一起使用 近似分析 实践 D3172 )允许对用作燃料或其他含碳工艺的煤以及冶金用焦炭进行粗略评估。

1.1 This practice covers the term ultimate analysis as it is applied to the analysis of coal and coke. The information derived is intended for the general utilization by applicable industries, to provide the basis for evaluation, beneficiation, or for other purposes. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.2.1 All percentages are percent mass fractions. 1.3 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. 1.4 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. ====== Significance And Use ====== 4.1 Summarizing the ash mass fraction and the mass fraction of the organic constituents in a specific format under the heading, Ultimate Analysis , provides a convenient and uniform system for comparing coals or cokes. This tabulation used with that of Proximate Analysis (Practice D3172 ) permits cursory valuation of coals for use as fuel or in other carbonaceous processes and of cokes for metallurgical purpose.