The European powerful online platform with manufacturers and suppliers of pressure equipments​

ISO/TR 15608 Material Group 74

Material Group 74 ISO/TR 15608: Austempered ductile cast iron

Austempered ductile cast iron

Austempered ductile cast irons, or more commonly ADI castings, is a ductile iron casting which is processed by a special heat treatment. The austempering process, with ductile iron’s superior castability, results in a material which can be used to cast complex shapes, with a greater consistency of quality, and often at less cost.  The heat treatment requires an interrupted quench, usually into a salt bath, to cool the cast part at a planned rate and long enough to achieve the desired austempered result. The resulting material has a combination of exceptional strength and toughness, meeting and often exceeding those of alloy steels.

Typical materials in group 74

NameNumberStandardsRemarks
EN-GJS-800-8 EN-JS1100EN 1564
EN-GJS-800-8-RTEN-JS1104EN 1564
EN-GJS-800-8-S-RTEN-JS1109EN 1564
EN-GJS-1000-5EN-JS1110EN 1564
EN-GJS-1200-2EN-JS1120EN 1564
EN-GJS-1400-1EN-JS1130EN 1564
Table: Typical materials