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4 Responses to “Decker Stainless Steel”

1. biire2u
   7:15 am on October 25th, 2010

   There are many types of stainless steel.

   Some are magnetic and some are non-magnetic.

   The magnetic properties of stainless steel are very dependent on the elements added into the alloy, and specifically the addition of nickel can change the structure from magnetic to non-magnetic.

   Poor heat treatment or high heat input welding of normal or high carbon austenitic stainless steels will cause sensitization, ie formation of chromium carbides. The formation of carbides not only reduces the corrosion resistance of the stainless steel but also tends to form martensite around the carbide. This martensite is magnetic and the more severe the sensitisation, the stronger are
   the magnetic properties.

   When nickel is added, for instance, the austenite structure of iron is stabilized. This crystal structure makes such steels non-magnetic and less brittle at low temperatures.
   Martensitic stainless steels are magnetic.

   *Wrought, austenitic stainless steels, such as 304 and 316, are generally regarded as non-magnetic in the annealed condition, ie they are not attracted significantly by a magnet. However, if they are cold worked they will be attracted to a permanent magnet. The change occurs because the cold work deformation induces a transformation of the microstructure from austenite to martensite. The effect is less marked in alloys with high concentrations of austenite stabilisers such as nickel, nitrogen and carbon. Once the martensite is formed, it may also become magnetised.

   *In contrast to the austenitic alloys, ferritic stainless steels such as 409 or 3Cr12/5Cr12 and martensitic stainless steels such as 420, are strongly attracted to a magnet even in the annealed state. The duplex and super-duplex stainless steels will also be strongly attracted because they contain about 50% ferrite in their microstructure.

   *

2. CKOOmuzik
   6:41 pm on October 27th, 2010

   Don't take as hot showers and take shorter ones too

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   6:44 am on January 2nd, 2012

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4. Deal Best Price New year 2012
   1:05 pm on January 27th, 2012

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