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Stainless Steel

"Enduring Purity, Unyielding Strength." Delivering premium corrosion resistance for critical industries.

Stainless steel is an alloy steel containing iron (Fe) as its main component but at least 10.5% chromium (Cr) added to iron air

It combines with oxygen in the medium to form a very thin and dense oxide film (Cr₂O ₃) with a thickness of 1 to 3 nm (nanometers) called

'passive film' on the surface. This film fundamentally blocks external water or moisture from penetrating into the iron, thereby suppressing rust generation.

Like the name "Stain + Less", "It's a metal that doesn't rust easily" It's not a metal that doesn't rust at all.

In salty beaches or strong acidic environments, 316 grades containing molybdenum instead of 304 must be used to prevent rust completely.

Choosing the right steel species for the environment is the most important thing.

Stainless Steel Specification Guide

Series (Category)Grade (AISI/ASTM)Key CharacteristicsMain Applications
Austenitic (300 Series)304 / 304LNon-Magnetic, Excellent corrosion resistance & formability, Not hardenable by heat treatmentKitchenware, Food processing, Architecture cladding, General piping & Tanks
316 / 316LMolybdenum (Mo) Added, Superior resistance to chlorides & acidsMarine hardware, Offshore, Chemical & Petrochemical, Medical instruments
Ferritic (400 Series)430Magnetic, Economical (No Nickel), Good stress corrosion cracking resistanceHome appliances (Dishwashers), Interior trim, Fasteners
409LGood weldability & oxidation resistance, Cost-effective choiceAutomotive exhaust systems, Heat exchanger tubes
Martensitic (400 Series)410Magnetic, Hardenable (Heat Treatable) • High strength, moderate corrosion resistanceump shafts, Turbine blades, Bolts, Nuts, Valves, Machine parts
420High hardness after quenching, Excellent wear resistanceCutlery (Knives, Scissors), Surgical tools, Brake discs
DuplexS31803 (2205)Mixed microstructure (Austenite+Ferrite), Double the strength of 316LDesalination plants, Chemical tanks, High-pressure pipelines