【国外标准】 Standard Practice for Sampling Steel and Iron for Determination of Chemical Composition

4.1 This practice covers all aspects of sampling and preparing steel and iron for chemical analysis as defined in Test Methods, Practices, and Definitions A751 and Specification A48/A48M. Such subjects as sampling location and the sampling of lots are defined.4.2 This practice includes most requirements for sampling steel and iron for analysis. Standard test methods that reference this practice need contain only special modifications and exceptions.4.3 All who use these procedures should be trained samplers capable of performing common sampling operations skillfully and safely. Only proper sampling equipment should be used.1.1 This practice covers the sampling of all grades of steel, both cast and wrought, and all types (grades) of cast irons and blast furnace iron for chemical and spectrochemical determination of composition. This practice is similar to ISO 14284.1.2 This practice is divided into the following sections.  SectionsRequirements for Sampling and Sample Preparation 6General 6.1Sample 6.2Selection of a Sample 6.3Preparation of a Sample 6.4   Liquid Iron for Steelmaking and Pig Iron Production 7General 7.1Spoon Sampling 7.2Probe Sampling 7.3Preparation of a Sample for Analysis 7.4   Liquid Iron for Cast Iron Production 8General 8.1Spoon Sampling 8.2Probe Sampling 8.3Preparation of a Sample for Analysis 8.4Sampling and Sample Preparation for the Determination of 8.5 Oxygen and Hydrogen     Liquid Steel for Steel Production 9General 9.1Probe Sampling 9.2Spoon Sampling 9.3Preparation of a Sample for Analysis 9.4Sampling and Sample Preparation for the Determination 9.5 of Oxygen  Sampling and Sample Preparation for the Determination 9.6 of Hydrogen     Pig Irons 10General 10.1Increment Sampling 10.2Preparation of a Sample for Analysis 10.3   Cast Iron Products 11General 11.1Sampling and Sample Preparation 11.2     SectionsSteel Products 12General 12.1Selection of a Laboratory Sample or a Sample for 12.2 Analysis from a Cast Product  Selection of a Laboratory Sample or a Sample for 12.3 Analysis from a Wrought Product  Preparation of a Sample for Analysis 12.4Sampling of Leaded Steel 12.5Sampling and Sample Preparation for the Determination 12.6 of Oxygen     Sampling and Sample Preparation for the Determination 12.7 of Hydrogen     Keywords 13     AnnexesSampling Probes for Use with Liquid Iron and Steel Annex A1Sampling Probes for Use with Liquid Steel for the Annex A2 Determination of Hydrogen  1.3 The values stated in SI units are 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. For specific statements, see 6.4.3.5, 9.4.4.3, 12.5.1, and Section 5.1.5 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.