ASTM A179 yana rufe mafi ƙarancin kauri na bango, ƙananan bututun ƙarfe mai ƙarancin sanyi mai ƙarancin sanyi don tubular, masu musayar zafi, na'urorin haɗi, da sauran sabis na canja wurin zafi.Ana ba da bututun ƙarfe na ASTM A179 mara nauyi kuma ana samarwa ta hanyar zane mai sanyi.Abubuwan sinadaran sun ƙunshi carbon, manganese, phosphorus, da sulfur.