ISO 9327-4:1999 PDF

Scope: 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. 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.

ISO 9327-4:1999 Referenced Document

ISO 148:1983 Steel; Charpy impact test (V-notch)
ISO 4948-2:1981 Steels; Classification; Part 2 : Classification of unalloyed and alloy steels according to main quality classes and main property or application characteristics
ISO 9327-1 Steel forgings and rolled or forged bars for pressure purposes - Technical delivery conditions - Part 1: General requirements
ISO/TR 15461:1997 Steel forgings - Testing frequency, sampling conditions and test methods for mechanical tests
ISO/TR 4949:1989 Steel names based on letter symbols

1999 ISO 9327-4:1999 Steel forgings and rolled or forged bars for pressure purposes - Technical delivery conditions - Part 4: Weldable fine grain steels with high proof strength