904L Stainless Steel - 0 views

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  #1 Connor Neumann on 15 Jun 13

   

  Back 904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade offers it significantly improved resistance to sturdy reducing acids, particularly sulphuric acid. Navigate to this link understandable to check up how to think over it. It is also very resistant to chloride attack - each pitting/ crevice corrosion and tension corrosion cracking.
  
  This grade is non-magnetic in all circumstances and has outstanding weldability and formability. The austenitic structure also gives this grade superb toughness, even down to cryogenic temperatures.
  
  904L does have extremely significant contents of the high price ingredients nickel and molybdenum. Several of the applications in which this grade has previously performed properly can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205), so it is used less frequently than in the previous.
  
  Corrosion Resistance
  
  Although originally developed for its resistance to sulphuric acid it also has a quite high resistance to a wide range of environments. A PRE of 35 indicates that the material has great resistance to warm sea water and other high chloride environments. High nickel content material results in a much better resistance to anxiety corrosion cracking than the standard austenitic grades. Copper adds resistance to sulphuric and other minimizing acids, particularly in the really aggressive "mid concentration" range.
  
  In most environments 904L has a corrosion functionality intermediate in between the common austenitic grade 316L and the quite very alloyed six% molybdenum and similar "super austenitic" grades.
  
  In aggressive nitric acid 904L has less resistance than molybdenum-no cost grades such as 304L and 310L.
  
  For highest tension corrosion cracking resistance in important environments the steel ought to be answer treated following cold operate.
  Heat Resistance
  
  Good resistance to oxidation, but like other highly alloyed grades suffers from structural instability (precipitation of brittle phases such as sigma) at elevated temperatures. 904L must not be employed above about 400°C.
  Heat Therapy
  
  Resolution Remedy (Annealing) - heat to 1090-1175°C and cool swiftly. This grade cannot be hardened by thermal treatment.
  Welding
  
  904L can be successfully welded by all standard techniques. Care wants to be taken as this grade solidifies fully austenitic, so is susceptible to hot cracking, particularly in constrained weldments. Dig up further on our favorite related web resource - Click here: corona self storage. No pre-heat really should be used and in most instances post weld heat remedy is also not essential. AS 1554.6 pre-qualifies Grade 904L rods and electrodes for welding of 904L.
  Fabrication
  
  904L is a higher purity, low sulphur grade, and as such will not machine effectively. Despite this the grade can be machined employing standard techniques.
  
  Bending to a modest radius is readily carried out. This rousing human resources manager web resource has endless grand suggestions for why to provide for this belief. In most circumstances this is performed cold. Subsequent annealing is typically not needed, even though it must be considered if the fabrication is to be used in an atmosphere exactly where extreme tension corrosion cracking conditions are anticipated.
  Applications
  
  Common applications incorporate:
  
  * Processing plant for sulphuric, phosphoric and acetic acids
  
  * Pulp and paper processing
  
  * Elements in gas scrubbing plants
  
  * Seawater cooling equipment
  
  * Oil refinery components. Visiting phoenix rv storage certainly provides lessons you should tell your cousin.

   

  <div class="cArrow"> </div><div class="cContentInner">Back 904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade offers it significantly improved resistance to sturdy reducing acids, particularly sulphuric acid. Navigate to this link <a href="http://www.handsurgeon.org/" rel="nofollow">understandable</a> to check up how to think over it. It is also very resistant to chloride attack - each pitting/ crevice corrosion and tension corrosion cracking. <br /> <br /> This grade is non-magnetic in all circumstances and has outstanding weldability and formability. The austenitic structure also gives this grade superb toughness, even down to cryogenic temperatures. <br /> <br /> 904L does have extremely significant contents of the high price ingredients nickel and molybdenum. Several of the applications in which this grade has previously performed properly can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205), so it is used less frequently than in the previous. <br /> <br /> Corrosion Resistance <br /> <br /> Although originally developed for its resistance to sulphuric acid it also has a quite high resistance to a wide range of environments. A PRE of 35 indicates that the material has great resistance to warm sea water and other high chloride environments. High nickel content material results in a much better resistance to anxiety corrosion cracking than the standard austenitic grades. Copper adds resistance to sulphuric and other minimizing acids, particularly in the really aggressive "mid concentration" range. <br /> <br /> In most environments 904L has a corrosion functionality intermediate in between the common austenitic grade 316L and the quite very alloyed six% molybdenum and similar "super austenitic" grades. <br /> <br /> In aggressive nitric acid 904L has less resistance than molybdenum-no cost grades such as 304L and 310L. <br /> <br /> For highest tension corrosion cracking resistance in important environments the steel ought to be answer treated following cold operate. <br /> Heat Resistance <br /> <br /> Good resistance to oxidation, but like other highly alloyed grades suffers from structural instability (precipitation of brittle phases such as sigma) at elevated temperatures. 904L must not be employed above about 400°C. <br /> Heat Therapy <br /> <br /> Resolution Remedy (Annealing) - heat to 1090-1175°C and cool swiftly. This grade cannot be hardened by thermal treatment. <br /> Welding <br /> <br /> 904L can be successfully welded by all standard techniques. Care wants to be taken as this grade solidifies fully austenitic, so is susceptible to hot cracking, particularly in constrained weldments. Dig up further on our favorite related web resource - Click here: <a href="http://www.dollarselfstorage.com/storage-locations/california/corona-lincoln-self-storage.php" rel="nofollow">corona self storage</a>. No pre-heat really should be used and in most instances post weld heat remedy is also not essential. AS 1554.6 pre-qualifies Grade 904L rods and electrodes for welding of 904L. <br /> Fabrication <br /> <br /> 904L is a higher purity, low sulphur grade, and as such will not machine effectively. Despite this the grade can be machined employing standard techniques. <br /> <br /> Bending to a modest radius is readily carried out. This rousing <a href="http://www.dollarselfstorage.com/storage-locations/arizona/chandler-self-storage.php" rel="nofollow">human resources manager</a> web resource has endless grand suggestions for why to provide for this belief. In most circumstances this is performed cold. Subsequent annealing is typically not needed, even though it must be considered if the fabrication is to be used in an atmosphere exactly where extreme tension corrosion cracking conditions are anticipated. <br /> Applications <br /> <br /> Common applications incorporate: <br /> <br /> * Processing plant for sulphuric, phosphoric and acetic acids <br /> <br /> * Pulp and paper processing <br /> <br /> * Elements in gas scrubbing plants <br /> <br /> * Seawater cooling equipment <br /> <br /> * Oil refinery components. Visiting <a href="http://www.dollarselfstorage.com/storage-locations/arizona/phoenix-self-storage.php" rel="nofollow">phoenix rv storage</a> certainly provides lessons you should tell your cousin.</div>

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