430 Stainless Steel Sheet/Plate

 --AISI 430
 --UNS S43000
 --EN 1.016       
 

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Chemical Composition and mechanical properties

Corrosion Resistance

SS430 has good corrosion resistance in a wide varitely of  corrosive environments including nitric acid and some organic acids.It is  generally used for highly polished applications and in mild atmospheres such as  for food processing and dairy equipment.Atmospheric corrosion resistance is  good,although in highly polluted or marine environments staining may occur.

Annealing

Annealing is achieved by heating to above 760℃ and 830℃for 90 minutes per 25mm thickness followed by air  quenching.Controlled atmospheres are recommended in order to avoid excessive  oxidation of the surface.

Welding

SS430 is prone to brittle characteristic in the heat-affected  zone of weldments due to formation of martensitic phase.Thw tensile,fatigue and  thoughness properties in the welded condition are relatively poor.So SS430  should not be used for applications where tensile or dynamic loading will be  experience.Edge welds are not recommended for SS430.The use of austenitic  filler metals such as types 309S or 316L will improve the ductility of welds to  some extent but all welding procedures should nevertheless endeavor to maintain  minimum heat inputs.The weld discoloration should be removed by pickling and  p[assivating to restore maximum corrosion resistance.

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