WHAT IS STAINLESS STEEL?
A subcategory of alloy steels called stainless steel has a minimum level of 10,5 percent chromium (Cr).
On the surface of the steel, chromium forms a thin, passive, and self-renewing layer of chromium oxide. On the inside as well as the outside of the surface, this layer stops additional corrosion. This characteristic sets stainless steel apart from other steels.
It was was first discovered in Sheffield, England, in the early 1900s. The development of stainless steel then extended to France and Germany. Duplex grades were created in the 1930s, but the standard duplex grades weren’t mastered until the 1970s.
Iron (Fe), Chrome (Cr), Carbon (C), Silicon (Si), Manganese (Mn), and often Nickel are the main elements found in stainless steels (Ni). The addition or removal of components such as Chrome (Cr), Carbon (C), Nickel (Ni), Molybdenum (Mo), Silicon (Si), Manganese (Mn), Copper (Cu), Titanium (Ti), Sulfur (S), Niobium (Nb), and others results in different grades with different qualities.
Both high and low temperatures can be employed with stainless steel. They are oxidation and corrosion resistant. Up to 700°C, standard grades are heat resistant. Heat resistance is improved to 1150°C in grades with more Nickel (Ni) and Chrome (Cr) content.
They can serve a variety of purposes because of their formability. They have a relatively low overall life cycle cost because of their durability. these steels are more expensive than carbon steels, but they require little to no care and last far longer. Consequently, over time, they are more cost-effective than carbon steels.
Comparatively speaking, stainless steels are quite hygienic. Consuming it is practically required in the medical sector, food and beverage industry, kitchen equipment industry, home appliance industry, and other related industries.
They have a nice appearance and are 100 percent recyclable and environmentally friendly.
STAINLESS STEEL TYPES
They can be categorized into 5 main types based on their internal structure: AUSTENITIC, MARTENSITIC, FERRITIC, DUPLEX, PRECIPITATION HARDENING.
They may be divided into 5 sub-categories:
1) Austenitic
2) Martensitic
3) Ferritic
4) Duplex
5) Precipitation Hardening
By percentage of adding alloys, determines the chemical compositions of the internal structures
You can source Austenitic, Martensitic, Ferritic and Duplex Stainless Steels from Hisco Steel‘s ready stocks.
STAINLESS STEEL FORMS
Coils, sheets, plates, round bars, flat bars, angles, wires, square bars, hexagon bars, pipes and profiles are the standard producton forms.
What is PDV coating stainless steel
These Steels uses physical vapor deposition (PVD) to create a thin, highly adherent coating of pure metal or alloy made of titanium, chromium, and aluminum that may be applied on electrically conductive materials.
STAINLESS STEEL STANDARDS
Stainless steels are divided into groups based on their chemical composition and usage characteristics. By country, this classification code varies. The “AISI – USA,” “EN – Europe,” and “DIN – German” norms are the most widely utilized standards worldwide.
AISI (AMERICAN IRON AND STEEL INSTITUTE): USA
EN (EUROPEAN NORMS): EUROPE
DIN (DEUTSCHES INSTITUT FUR NORMUNG): GERMANY
AFNOR (ASSOCIATION FRANCAISE DE NORMALISATION): FRANCE
BSI (BRITISH STANDARDS INSTITUTION): UK
JIS (JAPANESE INDUSTRIAL STANDARDS): JAPAN
UNI (ENTE NAZIONALE ITALIANO DI UNIFICAZIONE): ITALY
GOST (GOSUDARSTVENNYY STANDART): RUSSI
SURFACES
No1: Hot rolled, heat treated, annealed and pickled. Rough mill surface.
2B: Cold rolled, heat treated, annealed, pickled and skinpassed. Matte surface.
BA: Cold rolled, heat treated, annealed, pickled, skinpassed and polished. Bright annealed surface.
2M: Cold rolled, heat treated, annealed, pickled, skinpassed with decorative patterns. Pattern surface.
No2: Cold rolled, heat treated, annealed, pickled, skinpassed and K180 grinded. Lightly brushed surface.
No3: Cold rolled, heat treated, annealed, pickled, skinpassed and K240 grinded. Brushed surface.
No4: Cold rolled, heat treated, annealed, pickled, skinpassed and K320 grinded. Satin surface.
Scotch Brite: Cold rolled, heat treated, annealed, pickled, skinpassed, grinded and dry brushed. Hairline surface.
