Sanyo Special Steel Develops High Strength Alloy Steel except Nickel and Molybdenum

Japanese major special steel maker, Sanyo Special Steel developed high strength alloy steel, ECOMAX, which doesn’t include nickel and molybdenum. The firm responded users’ request which they need downsizing and weight saving of drive-line components of automobile for environment load reduction. ECOMAX reduce production cost by saving of alloy, which has high strength and high workability compared with existing high strength steel. The firm is supplying its sample to some users, and aims the establishment of commercial production system at 1000 tonnes per month 2 years later. The firm reduced non-ferrous inclusion in alloy steel by specific technology, and worked out a design of element such as silicon, manganese or chrome based high cleanliness steel. Moreover, by a carburizing heat treating, ECOMAX is pulled out steel capability and component’s function at a maximum. The firm expects to be used ECOMAX for transmission gear, differential gear, gear shaft or constant-velocity joint. Commonly used high strength steel, JISSCR420H or SCM420H is made by a carburizing heat treating, and is including nickel, molybdenum for higher strength.