Especially at-0 ℃,the impact toughness of ductile iron excess J/cm~ so that it can meet the requirements of ductile iron in the very frigid regions.
Especially at-0 ℃,the impact toughness of ductile iron excess J/cm~ so that it can meet the requirements of ductile iron in the very frigid regions.
尤其在-0℃时,αkv> J/cm,可以满足球墨铸铁件在高寒地区的使用要求。