Konpozisyon chimik nan asye wonn defini pwopriyete debaz li yo:
Ba wonn asye kabòn (egzanp, ASTM A36): Gen 0.25-0.29% kabòn, 0.80-1.20% Manganèz, ak tras kantite fosfò (<0.04%) and sulfur (<0.05%). This low-alloy composition prioritizes weldability and affordability, making them ideal for structural applications like construction rebar.
Ba wonn asye pur (egzanp, 304): Mete 18-20% chromium ak 8-10.5% nikèl, fòme yon kouch oksid pasif ki reziste korozyon. 316 klas ajoute 2-3% molybdène pou amelyore rezistans nan anviwònman klori (egzanp, itilizasyon maren).
Alyaj asye ba wonn (egzanp, 4140): Konbine 0.38-0.43% kabòn ak 0.80-1.10% Kwòm ak 0.15-0.25% molybdène pou amelyore rezistans solid ak fòs rupture, yo itilize nan konpozan gwo -estrès tankou arbr.
Varyasyon rejyonal egziste: Q235 kabòn wonn Lachin nan gen yon ti kras pi ba kabòn (<0.22%) than ASTM A36, while Europe's EN 10088-3 1.4301 (304 equivalent) specifies stricter limits on sulfur (<0.015%) for better corrosion resistance.