1.1 ISO 9327的这一部分适用于制造的厚度不超过250 mm的锻件和轧制或锻造棒材 由表1中给出的细晶粒钢（见注释）制成，并根据表1中给出的规格交付 ISO 9327-1。 钢分为 室温等级（P.）， 升高的温度等级(PH)， 低温等级（PL.）， 低温和高温等级（PLH。）. 注:细晶粒钢在这里被理解为晶粒尺寸为6或更细的钢，根据中的晶粒尺寸图表 ISO 643。 1.2 ISO 9327的这一部分涵盖以下数据: a)在表1中， 根据铸件分析的化学成分； 室温下的拉伸性能； 交货时通常热处理条件的指示； b)在表2中，对于铸造分析给出的极限值，允许的产品分析公差；c)表3中的最小冲击能量值； d)表4中的最小高温强度值。

1.1 This part of ISO 9327 applies to forgings and rolled or forged bars in thicknesses up to 250 mm manufactured from fine grain steels (see NOTE) given in Table 1 and to be delivered according to the specifications given in ISO 9327-1. The steels are classified into room temperature grades (P.), elevated temperature grades (PH.), low temperature grades (PL.), low and elevated temperature grades (PLH.). NOTE Fine grain steels are here understood as steels with grain size 6 or finer according to the grain size charts in ISO 643. 1.2 This part of ISO 9327 covers the following data: a) In Table 1 the limits for the chemical composition according to the cast analysis; the tensile properties at room temperature; the indications on the usual heat treatment condition at the time of delivery; b) in Table 2 the permissible product analysis tolerances on the limiting values given for the cast analysis; c) in Table 3 the minimum impact energy values; d) in Table 4 the minimum elevated temperature proof strength values.