Dhammaan xaashida birta ah ee chrome molybdenum waa la suuxin oo lagu daaweeyaa kulayl si waafaqsan ASTM A387, kaas oo sidoo kale qeexaya ugu yaraan iyo heerka ugu sarreeya ee walxahan soo socda ee birta: Kiimikada Kaarboon, Manganese, Fosfooraska, Sulfur, Silicon, Chromium, Molybdenum, Nickel, Vanadium, Columbium, boron, nitrogen, aluminium, shuruudaha zirconium. Looxyada A387 waa inay maraan badeecada, kiimikooyinka iyo tijaabinta jilicsanaanta (oo ku qoran MTC ama shahaadada tijaabada alaabta) - waa inay buuxiyaan shuruudo gaar ah oo loogu talagalay xoogga xajinta, soosaarka xoogga iyo dhererka.