Taarikada birta ah ee birta ah & go'yaal & xirmooyinka
Alloy xarkaha birta birta ah waa nooc bir ah oo bir aan kala go 'lahayn, wax qabadkeeduna aad ayuu uga sarreeyaa kan shaashadda birta ee aan caadiga ahayn ee birta aan caadiga ahayn. Sababtoo ah nooca birta birta ah waxaa ku jira koromid heerkul ah, iska caabbialkeeda heerkulka, iska caabinta heerkulka hoose iyo iska caabbinta jahwareerka ayaa aad uga fiican tuubbada birta aan caadiga ahayn ee birta. Tuubbooyinka kale ee birta ah, sidaa darteed tuubooyinka care si ballaaran ayaa loo isticmaalaa batroolka, haragga, kiimikada, korantada, kuleylka, kuleylka, militariga iyo warshadaha kale.
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.
ASTM A3355 PIPE Fasalka Fasalka P91 waa tuubo tayo sare leh oo loogu talagalay kuleylka cadaadiska badan. P91 Tuubbada ayaa ku habboon in la foorarsado, garaacis ama alxamida iyo hawlgallada la midka ah. Maaddada birta waa inay u hogaansamaan shuruudaha ka kooban kiimikaad, sifooyinka khafiifka ah iyo adkaanta.
