Stainless Steel

Metal

HIGH-QUALITY STAINLESS STEEL PRODUCTS FROM HYTRON METALS

Stainless steel is an iron alloy composed primarily of iron and chromium. The chromium in the material reacts with oxygen on the surface to create an oxidized “passive layer”, which prevents corrosion and rust. While all stainless steels have at least 10.5% chromium content alloys with higher percentages demonstrate greater corrosion resistance. Stainless steel is often alloyed with other elements such as nickel, carbon, silicon, manganese and molybdenum to enhance certain material characteristics. Manufacturers leverage this ability to increase the material’s form ability, heat resistance and durability depending on the needs of the final product.

Stainless steel is available in a variety of grades, which are generally categorized into five main types:

AUSTENITIC

The most common type of steel, austenitic stainless steels, contains nickel, manganese, nitrogen and sometimes molybdenum in addition to iron and chromium. These alloys cannot be hardened through heat treatment, but can be work hardened.

MARTENSITIC

These stainless steels have carbon contents as high as 1%, which allows them to be hardened and tempered, similar to carbon and low-alloy steels.

FERRITIC

Ferritic steels feature high chromium contents and low carbon contents (usually less than 0.10%). They cannot be work hardened and demonstrate less formability than austenitic steels. However, they offer magnetic properties, high corrosion resistance and resistance to cracking due to corrosion.

DUPLEX

Duplex steels feature a material structure that is half austenitic and half ferritic. This quality provides them with superior strength and corrosion resistance.

PRECIPITATION HARDENING (PH)

PH steels contain additional elements, such as aluminium, copper or niobium and undergo heat treatments, both of which enhance their material strength. As they are less likely to experience thermal distortion, they are suitable for manufacturers of parts with intricate designs or those that require tight tolerances.

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