Khetha i-42Crmo kanye ne-40CrNiMo alloy materials.Ukufoja, ukukhanda imishini, ukwelapha ukushisa, ukuqhunyiswa kwesibhamu nokunye ukucutshungulwa ukuze kuthuthukiswe ukumelana ne-Abrasion kanye nomthelela wokumelana nemikhiqizo, nokwandisa impilo yayo yesevisi.