Chemical & Mechanical Properties

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Duplex Steel Chemical Properties

  C Mn Si P S Cr Mo Ni N
2205
(S31803)		 0.03
max		 2.0
max		 1.0
max		 0.03
max		 0.02
max		 min: 21.0
max: 23.0		 min: 2.5
max: 3.5		 min: 4.5
max: 6.5		 min: 0.08
max: 0.20
2205
(S32205)		 0.03
max		 2.0
max		 1.0
max		 0.03
max		 0.02
max		 min: 22.0
max: 23.0		 min: 3.0
max: 3.5		 min: 4.5
max: 6.5		 min: 0.14
max: 0.20
2507
 0.03
max		 1.2
max		 0.80
max		 0.035
max		 0.02
max		 min: 24.0
max: 26.0		 min: 3.0
max: 5.0		 min: 6.0
max: 8.0		 min: 0.24
max: 0.32
% 2205 UR52N+
C 0-0.03 0.03 max
Mn 2.0 1.5
Si 1.0 0.8
P 0-0.03 0.035
S 0-0.02 0.02
Cr 21-23 24-26
Mo 2.5-3.5 3.0-5.0
Ni 4.5-6.5 5.5-8.0
N 0.08-0.2 0.2-0.35
Cu - 0.5-3.0
The Chemical Composition of SS2507, %
C≤0.03
Mn≤1.2
Si≤0.80
S≤0.02
P≤0.035
Cr24.0-26.0
Ni6.0-8.0
Mo3.0-5.0
Cu≤0.5
N0.24-0.32


Duplex Steel Mechanical Properties

Grade 2205 UR52N+
Tensile Strength (MPa) 620 770
Proof Stress 0.2% (MPa) 450 550
Elongation A5 (%) 25 25