DUCTILE CAST IRON GMS0010002 Rev 3爱科英文版球铁标准.docVIP

SUBJECT: Global Ductile Cast Iron Material Standard Introduction Objective To provide a uniform material standard that covers all ductile cast iron used in AGCO complete machines, attachments, accessories and implements. It facilitates global part sourcing by providing a single AGCO material specification. It ensures that continuous component quality and integrity is maintained. Scope This standard applies to all ductile iron material purchased after the standard’s effective date. Ductile iron grades previously used by all AGCO Companies were specified by standards identified in Annex C. This new uniform standard is intended to replace the previously used standards. This standard describes five different grades of ductile cast iron, D250, D300, D360, D420 and D480. These grades include one that was specifically developed for applications where local hardening is required, D420. Grade designations are based on the combination of three factors: mechanical properties, hardness and microstructure of the cast product. Standard grades are specified with the prefix “D”; structural grades with prefix “DX”. Structural grades differ only in that they are more tightly controlled and are required to meet, in serial production, the parameters (mechanical properties, microstructure, chemical composition and heat treatment) of the originally qualified casting. Reference Documents - None Definitions Ductile Iron – a ferrous based material containing free graphite in spheroidal form characterized by a wide range of mechanical properties. It is a moderate to high strength material with medium impact resistance (toughness). Grade Specification - the grade of material shall be specified by use of this standard number followed by the specific grade required, i.e., AGCO GMS0010002 Grade D300. If a specific grade of ductile iron is not listed on the Engineering Drawing, or if there are any other questions with regard to the requirements, the supplier shall contact the ordering