Duplex Stainless
Chemical Composition
Composition (s) %
UNS Number Common Designation C Mn Si Cr Ni P S Others
S31500 3RE60 0.030 1.5 – 2.0 1.4 – 2.0 18.0 – 19.0 4.25 – 5.25 0.030 0.030 2.5-3.0 Mb
S31803 2205 0.030 2.000 1.000 21.0 – 23.0 4.5 – 6.5 0.040 0.020 2.5-3.5 Mb; 0.08-0.20 N
S32550 Ferralium 255 0.030 1.500 1.000 24.0 – 27.0 4.5 – 6.5 0.040 0.030 1.5-2.5 Cu; 0.10-0.25 N; 2.0-4.0 Mb
S32750 SAF2507 0.030MAX 1.2MAX 0.8MAX 25MAX 7.000 0.035MAX 0.020