Stainless steel F55 ke tšepe e sa hloekang ea duplex (austenitic-ferritic) e nang le ferrite e ka bang 40 - 50% maemong a koaletsoeng.F55 e bile tharollo e sebetsang ho chloride stress corrosion cracking mathata a nang le 304/304L kapa 316/316L a se nang litšila.Likahare tse phahameng tsa chromium, molybdenum le naetrojene li fana ka khanyetso ea kutu ho feta 316/316L le 317L e senang litšila libakeng tse ngata.F55 ha e khothalletsoe bakeng sa mocheso oa ho sebetsa o fihlang ho 600°F
 
|   Alloy  |    %  |    Ni  |    Cr  |    Mo  |    N  |    C  |    Mn  |    Si  |    S  |    P  |    Cu  |    W  |  
|   F55  |    Min.  |  6 |   24  |  3 |   0.2  |    
  |    
  |    
  |    
  |    
  |    0.5  |    0.5  |  
|   Max.  |  8 |   26  |  4 |   0.3  |    0.03  |    1  |    1  |    0.01  |    0.03  |    1  |    1  |  
|   Botenya   |    8.0 g/cm³   |  
|   Sebaka se qhibilihang   |    1320-1370 ℃   |  
|   Boemo ba alloy  |    Matla a tšepe  |    Ho hlahisa matla RP0.2 N/mm²  |    Elongation  |    Brinell hardness HB  |  
|   Phekolo ea tharollo  |    820  |    550  |    25  |    -  |  
ASME SA 182, ASME SA 240, ASME SA 479, ASME SA 789, ASME SA 789 Karolo IV Code Case 2603
ASTM A 240, ASTM A 276, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 479, ASTM A 790
 NACE MR0175/ISO 15156
F55(S32760) e kopanya matla a phahameng a mochini le ductility e ntle le khanyetso ea kutu tikolohong ea leoatle mme e sebetsa maemong a leholimo le mocheso o ka tlase ho zero.Ho hanyetsa ho hoholo hoa abrasion, khoholeho ea mobu le khoholeho ea cavitation hape e sebelisoa ts'ebetsong ea ts'ebeletso e bolila
Haholo-holo e sebelisoa bakeng sa oli le khase le lits'ebetso tsa leoatleng hangata li sebelisetsoa likepe tsa khatello, li-valve choke, lifate tsa Xmas, li-flanges le lipeipi.