Ista'oog bir ah ayaa loo qaybiyaa laba qaybood: bir-bir-sare iyo bir yar-yar oo bir ah. Qulqulka birta lo'da ee hoose ee birta leh, dhinaca kale, waxay ka kooban tahay qiyaastii 0.05 ¨c 0.25% kaarboon iyo ilaa 2.0% manganese. Stels-yada hoose waxay ka kooban tahay casharro ku saabsan wakiilada wakiilada sida niobium, nitromium, naxaas, nitromium, comium, molybdem, cunsuriyada dhulka ama zirconium. Si loo xoojiyo chromium plados, walxaha sida naxaasta, titanium, vaniadium iyo niobium-ka lagu daro ally.