| We've grown up hearing about stainless
| |
| | molybdenum contents and nitrogen
|
| steel our whole lives. But how many
| |
| | additions, as well as higher nickel
|
| people actually know what it really is?
| |
| | content. Because of these additions, they
|
| Let's take a look at the process of
| |
| | have a tremendous resistance to chloride
|
| making steel stainless and some of its
| |
| | pitting and crevice corrosion. Other
|
| general applications.
| |
| | types of stainless steel include
|
| English metallurgist Harry Brearley
| |
| | martenistic, ferritic and duplex, all of
|
| invented stainless steel in 1912 while he
| |
| | which have different compositions and
|
| was researching alloys to protect cannons
| |
| | strengths suited to various applications.
|
| from erosion. The first commercial
| |
| | When its composition is 18 percent
|
| production of stainless steel occurred in
| |
| | manganese and 10 percent nickel, it is
|
| August 1913. A few years later, stainless
| |
| | often referred to as 18/10 stainless
|
| steel played a key role in building
| |
| | steel, which is often used in
|
| valves for aircraft engines during World
| |
| | high-quality flatware. There are many
|
| War I. By the 1920's, people were finding
| |
| | different grades and surface finishes of
|
| myriad uses for stainless steel in
| |
| | stainless steel, which makes the material
|
| America. Most famously, the seven arches
| |
| | very adaptable to numerous applications.
|
| on top of the Chrysler Building in New
| |
| | Look at the watch on your wrist. It's
|
| York City were clad in stainless steel in
| |
| | likely made from stainless steel. It is
|
| 1929.
| |
| | also to make airplanes, surgical
|
| Chemically speaking, stainless steel is
| |
| | appliances, building materials, cookware,
|
| defined as an iron and carbon alloy with
| |
| | cutlery, hardware, cars and jewelry.
|
| a minimum of 11.5 percent chromium
| |
| | Mill finishes can be applied to flat
|
| content. Its name indicates some of its
| |
| | rolled stainless steel with the use of
|
| properties, because it does not stain or
| |
| | mechanical abrasives and the rollers
|
| rust as easily as ordinary steel. It is
| |
| | themselves. After it is rolled to size
|
| also sometimes referred to as corrosion
| |
| | and annealed, oxidation is removed and
|
| resistant steel. It should not be
| |
| | the passivation layer is made on its
|
| confused with galvanized steel.
| |
| | surface. At this time, a final finish can
|
| Galvanized steel is dipped into zinc to
| |
| | be added to enhance the appearance of the
|
| prevent corrosion. Galvanized steel is
| |
| | steel.
|
| created when the zinc goes through a
| |
| | For example, a sheet may have a matte
|
| reaction with the iron molecules. The
| |
| | finish to it, where the face of the
|
| most external layer is all zinc, but
| |
| | material is abrasively polished leaving a
|
| successive layers are a mixture of zinc
| |
| | clean but dull sheen to the surface. This
|
| and iron, with an interior of pure steel
| |
| | is often desired where the material will
|
| in galvanized steel.
| |
| | be used in a high visibility, high use
|
| Manganese is often found in many
| |
| | location; the surface will not show
|
| stainless steel compositions. Manganese
| |
| | scratches and scars as readily as a
|
| preserves an austenitic structure in the
| |
| | highly polished finish.
|
| steel akin to nickel, and it is less
| |
| | Stainless steel is available in both hot
|
| expensive. Austenitic stainless steel
| |
| | rolled steel sheets and cold rolled steel
|
| makes up about 70 percent of the world's
| |
| | sheets, and it can also be obtained in
|
| overall stainless steel production. Super
| |
| | plates, rolls, strips, foil and bars.
|
| austenitic stainless steels have high
| |
| |
|
