Alloy Type	Common Designations	Key Properties	Primary Applications
Stainless Steel	304, 316, 410	Corrosion resistance, strength	Food processing, chemical, marine
Tool Steel	D2, A2, O1	High hardness, wear resistance	Cutting tools, molds, dies
Aluminium Alloys	6061, 7075, 2024	Light weight, corrosion resistance	Aerospace, automotive, construction