A new ASTM specification will help manufacturers optimize and expand the use of high-silicon molybdenum iron (SiMo) castings,which are used in high-temperature car parts such as exhaust systems and turbocharger housings. These castings are also used for components of power plants.
This standard helps produce lighter,more heat-resistant and more consistent iron castings for auto and related industry applications, iron casting manufacturers and automotive original equipment manufacturers will be the primary users of the standard.
The standard (A1095,Specification for High Silicon Molybdenum Ferritic Iron Castings) covers process,design and heat resistance of SiMo castings. It includes spheroidal and compacted graphite microstructures as well as a new type of iron mixed graphite.
The mixed graphite microstructure introduced in the standard could offer a game-changing opportunity for producing cast iron engine cylinder blocks,head,liners,brakes and exhaust components,This could benefit the entire metalcasting and automotive industries.
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