Duplex Stainless Steel

Duplex stainless steel features of both austenitic and ferritic stainless steels, with ferrite accounting for 50% and austenite approximately or at least 30%. Some duplex also contains alloying elements such as Mo, Cu, Nb, Ti, and N. Examples for duplex grades as below:

S32760

Chemical Composition:
%CMnPSSiNiCrMoN
Min62430.2
Max0.0310.030.01182640.3
mechanical properties
Heat TreatmentT*SY*SElHardness
MPAMPA%HRC
1020-110075055025≤28

S32205

Chemical Composition:
%CMnPSSiNiCrMoN
Min4.5212.50.08
Max0.0320.030.0216.5233.50.2
Mechanical Properties
Heat TreatmentT*SY*SElHardness
MPAMPA%HB
1020-110062045025≤290

S32750

Chemical Composition:
%CMnPSSiNiCrMoN
Min62430.24
Max0.031.20.0350.020.882650.32
Mechanical Properties
Heat TreatmentT*SY*SElHardness
MPAMPA%HB
1025-112580055015≤310