The following provides information on the sample preparation and sampling methods for the determination of carbon, sulfur, oxygen nitrogen and hydrogen in steel. The sampling methods and preparations introduced here are typical. Other methods may be applied if they are proper and suitable.
The main purpose of sampling is the selection of typical samples that represent a lot of corresponding products. The main purpose of sample preparation is the analysis of impurities that are not easily purged from the products. The samples must be free of any element that hinders the proper analysis of the samples.
It is very important to obtain accurate analysis results for quality control purposes. Sampling standards and sample preparation standards have been established in the manufacturing industry for this purpose.
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