57% 2700MPaAy
43% 21200MPa (A)
● 8 oyi akwa Multilayer agba
● Site na 43% ruo 57% gradient maka nghọta
● Ike na-egosi gradient si 700MPa ruo 1200MPa
● Kwesịrị ekwesị foranterior, okpueze na 14 unit bridges