Stainless steel

A general idea about Stainless steel
Stainless steel was developed in 1793 when Chromium (Cr) was first introduced to French
Academy. Stainless steel is an iron based alloy in which Chromium is present in around 11%.
Stainless steel does not rust due to Chromium's presence, which forms a passive film all over the
material to resist rusting. It also has a heat resistance property, which is helpful in many ways.
There are 150 grades of stainless steel, out of which customers use 15 types widely
Some elements are used in different proportions to manufacture various types of stainless steel.
Three digits designate a specific type of stainless steel. e. g—304 stainless steel.
Different elements can increase the corrosion resistance of stainless steel by adding sufficient
Chromium to the alloy, which will be more than 11% of Chromium. Corrosion resistance also
can be increased by the addition of Nickel above 8% to the alloy metal. The corrosion resistance
of stainless steel also can be by Molybdenum and Nitrogen addition. Additional Nitrogen also
increases the mechanical strength of the material. There are plenty of Stainless Steel Fasteners
manufacturers in India. The different forms of stainless steel are sheets, pipes, bars, plates,
wires, tubes.
This stainless steel is used in cutlery and cookware, in surgical instruments, in electrical
appliances, in construction projects, in buildings, in industrial equipment, in the paper mill,
chemical plants, storage tank, etc.
There are five types of stainless steel produced by Stainless Steel pipe fittings manufacturers
in India.

1. Austenitic stainless steel
It is the most extensive family among all the families of stainless steel. It occupies 2/3rd of the
stainless steel family. The microstructure of Austenite stainless steel is of a face-centered cubic
crystal structure. The components of Austenitic stainless steel are Nickel, Manganese, and
Nitrogen.
2. Ferritic stainless steel
This stainless steel is of ferrite microstructure like carbon steel. It has a body-centered cubic
structure.
3. Martensite stainless steel
It is also known as stainless engineered steel. It is magnetic, and it has low chromium content. So
a comparison to Austenite & terrific stainless steel, it is not much corrosion resistant.
4. Duplex stainless steel
This stainless steel has a mixed microstructure that means a combination of Austenite and
Ferritic types. The ideal mixture of ideal Duplex Steel Flanges is in a 50:50 ratio. But for
commercial use, Austenite & ferritic mix is used in a 40: 60 ratio. Duplex stainless steel has
twice the yield strength of austenitic type. It also has resistance to chlorides. Manufacturers
produce duplex steel pipe fittings, flanges, and steel fasteners for their customers.
5. Precipitation hardening stainless steel
This stainless steel is comparable to Austenitic.
Properties
Electrical- Stainless steel is a poor conductor
Magnetic- Martensitic and ferritic are magnetic
Application
The stainless steel is used in art & monument, architecture, water treatment, pulp and paper
industry, biomass conversion, chemical and petrochemical processing, in vehicles like in air
Crafts, trains, automobiles medicines, energy, and jewelry, etc.
If you are looking for any stainless steel, you should have a general idea about this.