Show I SE ij J TRO R TIIA TIUS J What hat la Is called Is Isern th r ern era form rn em-rn of gray gra Iron as used t. t tot tor car work steel Is fr that contains rota 10 to 50 riO pe steel which W was as 8 mixed in the time theat t tat at the time time of oC heating to a 1 aIts fiu Its a advantages over o cast Iron irOl lars largely strength tren th surfaces the time latter because t ca castings are not no so Chit Olt tOas to toaN toas as aN Iron one T Ti mire are plain gray ra other ant ad advantages se also |