Duplex Stainless Steel: Synergizing Ferritic Strength with Austenitic Corrosion Resistance

2205

Grade 2205 (S32205/S31803) duplex stainless steel delivers double the yield strength of standard austenitics with superior chloride stress corrosion cracking resistance for critical offshore, chemical, and petrochemical systems.

Item
C%
Si%
Mn%
P%
S%
Cr%
Ni%
Mo%
N%
Min
---
---
---
---
---
22.00
4.50
3.00
0.14
Max
0.03
1.00
2.00
0.030
0.020
23.00
6.50
3.50
0.20

2507

Grade 2507 (S32750) is a super duplex stainless steel with PREN>42, delivering 550+ MPa yield strength and exceptional resistance to chloride pitting/stress corrosion for critical subsea infrastructure and acid processing equipment.

Item
C%
Si%
Mn%
P%
S%
Cr%
Ni%
Mo%
N%
Min
---
---
---
---
---
24.00
6.00
3.00
0.24
Max
0.030
0.80
1.20
0.035
0.020
26.00
8.00
4.00
0.32
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