Alloy bir bir ah & go'yaal & xirmooyin
Guryaha farsamada ee la gaari karo waxay kuxirantahay waxyaabaha lagu daray sida Nickel, Chromium, Molybdem iyo Vadudam. Waxyaabaha soo socdaa waa taxane sifooyinka loo yaqaan 'alkoys bir' ah): xoogga, xoog, adkaan, cadaanyo, iska caabbinta, adkeysiga iska caabbinta, adkeynta iyo adag ee adag. Si loo gaaro qaar ka mid ah guryahaas hagaajisay, birta waxay u baahan kartaa daaweynta kuleylka.
Hadal adag oo hadal ah, bir kasta waa allen, laakiin ma aha in dhammaan strals loo yaqaan "strals-ka 'alloy stels'. Stors-yada ugu fudud waa macdanta birta (fe) oo ay ku xardhan yihiin kaarboon (c) (qiyaastii 0.1% ilaa 1%, iyadoo ku xidhan nooca) iyo wax kale oo aan ahayn kala-baxa si aan loo eegin); Kuwan waxaa loo yaqaannaa sterobon steron. Si kastaba ha noqotee, ereyga "aloy bir" waa ereyga caadiga ah ee tixraacaya stepls oo leh waxyaabo kale oo ah waxyaabaha kale ee ku daraya si ula kac ah ugamantaan kaarboon. Aloydiinta caanka ah waxaa ka mid ah manganese (midka ugu caansan), nikkel, chromium, molybdenum, Silicon, Silon, iyo Boron. Less common alloyants include aluminium, cobalt, copper, cerium, niobium, titanium, tungsten, tin, zinc, lead, and zirconium.
Iska caabbinta qaddarka ee SA 335 P91 P91 Burburinta aad u badan ayaa ka sarreysa kan birta kaarboon. Fasalka P91 waa tixraac ku saabsan halabuurka kiimikada ee stors-ka alkoy. Birta chromium-molimium-molybdenum, oo ka kooban kiimikada ASTM ASM A335 P91 Alloy atoy birta birta ah waxay ka kooban tahay 9% chromium iyo 1% molybdemka iyo Vadudam.
