Значение и использование

This practice covers all aspects of sampling and preparing steel and iron for chemical analysis as defined in Test Methods, Practices, and Definitions A 751 and Specification A 48/A 48M. Such subjects as sampling location and the sampling of lots are defined.

It is intended that this practice include most requirements for sampling steel and iron for analysis. Standard analytical methods that reference this practice need contain only special modifications and exceptions.

It is assumed that all who use these procedures will be trained samplers capable of performing common sampling operations skillfully and safely. It is expected that only proper sampling equipment will be used.

Область применения

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.

Sections Requirements for Sampling and Sample Preparation6 General6.1 Sample6.2 Selection of a Sample6.3 Preparation of a Sample6.4 Liquid Iron for Steelmaking and Pig Iron Production7 General7.1 Spoon Sampling7.2 Probe Sampling7.3 Preparation of a Sample for Analysis7.4 Liquid Iron for Cast Iron Production8 General8.1 Spoon Sampling8.2 Probe Sampling8.3 Preparation of a Sample for Analysis8.4 Sampling and Sample Preparation for the Determination of8.5 Oxygen and Hydrogen Liquid Steel for Steel Production9 General9.1 Probe Sampling9.2 Spoon Sampling9.3 Preparation of a Sample for Analysis9.4 Sampling and Sample Preparation for the Determination9.5 of Oxygen Sampling and Sample Preparation for the Determination9.6 of Hydrogen Pig Irons10 General10.1 Increment Sampling10.2 Preparation of a Sample for Analysis10.3 Cast Iron Products11 General11.1 Sampling and Sample Preparation11.2 Sections Steel Products12 General12.1 Selection of a Laboratory Sample or a Sample for12.2 Analysis from a Cast Product Selection of a Laboratory Sample or a Sample for12.3 Analysis from a Wrought Product Preparation of a Sample for Analysis12.4 Sampling of Leaded Steel12.5 Sampling and Sample Preparation for the Determination12.6 of Oxygen Sampling and Sample Preparation for the Determination12.7 of Hydrogen Keywords13 Annexes Sampling Probes for Use with Liquid Iron and SteelAnnex A1 Sampling Probes for Use with Liquid Steel for theAnnex A2 Determination of Hydrogen

1.3 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific statements, see 6.4.3.5, 9.4.4.3, and 12.5.1 as well as Section 5.