dear
jignesh makwana
Carbon steel on cooling transforms from Austenite to a mixture of
ferrite and cementite. With austenitic stainless steel, the high
chrome and nickel content suppress this transformation keeping the
material fully austenite on cooling (The Nickel maintains the
austenite phase on cooling and the Chrome slows the transformation
down so that a fully austenitic structure can be achieved with only 8%
Nickel).
Ferritic stainless steels generally have better engineering properties
than austenitic grades, but have reduced corrosion resistance, due to
the lower chromium and nickel content. They are also usually less
expensive. They contain between 10.5% and 27% chromium and very little
nickel, if any, but some types can contain lead. Most compositions
include molybdenum; some, aluminium or titanium. Common ferritic
grades include 18Cr-2Mo, 26Cr-1Mo, 29Cr-4Mo, and 29Cr-4Mo-2Ni. These
alloys can be degraded by the presence of σ chromium, an intermetallic
phase which can precipitate upon welding.
On Jul 17, 2:22 pm, jignesh makwana <jkmakwa...@gmail.com> wrote:
> Dear All,
> I have confusion about the magnetic property of Austenitic Stainless Steel
> in liquid state??
> I know that at room temperatures, Austenitic Stainless Steel are nonmagnetic
> in nature.
> You people please help me. Also kindly provide me any literature stating
> about tihs.
> Thanks in advance.
jignesh makwana
Carbon steel on cooling transforms from Austenite to a mixture of
ferrite and cementite. With austenitic stainless steel, the high
chrome and nickel content suppress this transformation keeping the
material fully austenite on cooling (The Nickel maintains the
austenite phase on cooling and the Chrome slows the transformation
down so that a fully austenitic structure can be achieved with only 8%
Nickel).
Ferritic stainless steels generally have better engineering properties
than austenitic grades, but have reduced corrosion resistance, due to
the lower chromium and nickel content. They are also usually less
expensive. They contain between 10.5% and 27% chromium and very little
nickel, if any, but some types can contain lead. Most compositions
include molybdenum; some, aluminium or titanium. Common ferritic
grades include 18Cr-2Mo, 26Cr-1Mo, 29Cr-4Mo, and 29Cr-4Mo-2Ni. These
alloys can be degraded by the presence of σ chromium, an intermetallic
phase which can precipitate upon welding.
On Jul 17, 2:22 pm, jignesh makwana <jkmakwa...@gmail.com> wrote:
> Dear All,
> I have confusion about the magnetic property of Austenitic Stainless Steel
> in liquid state??
> I know that at room temperatures, Austenitic Stainless Steel are nonmagnetic
> in nature.
> You people please help me. Also kindly provide me any literature stating
> about tihs.
> Thanks in advance.
--
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