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When nickel is added to stainless steel in sufficient
amount, the structure changes to "austenite".
The basic composition of austenitic stainless steels is 18% chromium
and 8% nickel.
Austenitic grades are the most commonly used stainless
steel accounting for 50% to 70% of production, being
the 304 grade the most commonly specified by far.
Basic properties
Excellent corrosion resistance.
Excellent weldability.
Excellent formability and ductibility.
Excellent cleanability and hygiene characteristics.
Good high temperature properties.
Non magnetic.
Common uses
Kitchen sinks.
Food processing equipment.
Chemical and plant equipment.
Architectural applications.
Common grades
304 General purpose steel with good corrosion
resistance for most applications.
310 Furnace part equipment. Resistant to temperature
900°C to 1100°C.
316 Used where high corrosion resistance is required,
i.e. marine equipment.
321 Contains titanium, heavy wellments in chemical
and other industries. Suitable for heat resisting applications
to 800°C.
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