这些方法适用于以铸造未锻造产品（精炼厂形状）形式提供的材料，如蛋糕、钢坯、线材和钢锭。这些方法旨在确定是否符合化学成分的要求。ISO 1811的第一部分与ISO 1811-2和1811-3一起取消并取代了ISO建议R 1811:1971，该建议构成了技术修订版。

The methods are applicable to the given materials in the form of cast unwrought products (refinery shapes) such as cakes, billets, wire bars and ingots. The methods are intended to determine compliance with the requirements for chemical composition. Together with ISO 1811-2 and 1811-3 this first part of ISO 1811 cancels and replaces ISO Recommendation R 1811:1971, of which it constitutes a technical revision.