ISO 9327-4 : 1999(R2013)现行
STEEL FORGINGS AND ROLLED OR FORGED BARS FOR PRESSURE PURPOSES - TECHNICAL DELIVERY CONDITIONS - PART 4 - WELDABLE FINE GRAIN STEELS WITH HIGH PROOF STRENGTH
出版：International Organization for Standardization
专家解读视频
Applicable to forgings and rolled or forged bars in thicknesses up to 250mm manufactured from fine grain steels and delivered with reference to the specifications detailed in ISO 9327/1. Steels classified into; room temperature grades; elevated temperature grades; low temperature grades; low and elevated temperature grades. Also details the limits for; the chemical composition according to the cast analysis; the tensile properties at room temperature; the indications on the usual head treatment condition at the time of delivery. Details of the permissible product analysis tolerances on the limiting values given for the cast analysis; the minimum impact energy values; the minimum elevated temperature proof strenght values.
