Dhammaan xaashiyaha birta ee chrome molybdenum waa la daweeyaa oo kululeeyaa si waafaqsan ASTM ASM A387, oo sidoo kale tilmaamaya heerarka ugu yar ee birta, Monumium, Boron, Boron, nitrogen, aluminium, titanium, titanium, titanium, titanium, titanium, titanium. zirconium. Guddiyada A387 waa inay maraan wax soo saarka, baaritaanka kiimikada iyo tijaabada (lagu diiwaangeliyay shahaadada imtixaanka ee MTC ama maaddada imtixaanka maaddada.