Steel forgings and rolled or forged bars for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and alloy (Mo, Cr and CrMo) steels with specified elevated temperature properties
Steel forgings and rolled or forged bars for pressure purposes — Technical delivery conditions — Part 2: Non-alloy and alloy (Mo, Cr and CrMo) steels with specified elevated temperature properties
1.1 This part of ISO 9327 applies to forgings and rolled or forged bars in thicknesses up to 250 mm (partly up to 500 mm) manufactured from the steels listed in Table 1 and to be delivered according to the specifications given in ISO 9327-1. 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 impact properties; 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 elevated temperature proof strength values (see C.4 of ISO 9327-1:1998); d) in Table 4 the estimated average stress rupture properties; e) in Table 5 the estimated average strength values for 1 % plastic strain.
ISO 9327-2:1999 - "Steel forgings and rolled or forged bars for pressure purposes - Technical delivery conditions - Part 2" defines delivery requirements for non‑alloy and alloy (Mo, Cr and CrMo) steels with specified elevated temperature properties. The standard applies to forgings and rolled/forged bars in thicknesses up to 250 mm (in some cases up to 500 mm) and works in conjunction with ISO 9327‑1 (general requirements). ISO 9327‑2 provides the material data and test/property limits needed when steels are intended for pressure equipment operating at elevated temperatures.
ISO 9327‑2 is used when specifying steel forgings or bars for pressure equipment and components where material behavior at elevated temperatures is critical. Typical applications include:
Упомянутые в описании и другие стандарты ISO
Use ISO 9327‑2:1999 when you need standardized, traceable delivery conditions and elevated‑temperature mechanical property requirements for Mo/Cr/CrMo steels intended for pressure service. Keywords: ISO 9327‑2, steel forgings, rolled bars, elevated temperature properties, proof strength, stress rupture, technical delivery conditions.