ER 2209ua mamanuina e fa'apipi'i ai u'amea e le gaoia e pei o le 2205 (UNS Number N31803).
ER 2553e fa'aaogaina muamua e fa'apipi'i ai u'amea e le gaoia duplex lea e aofia ai le tusa ma le 25% chromium.
ER 2594o se uaea uelo superduplex. O le Pitting Resistance Equivalent Number (PREN) e le itiiti ifo i le 40, o lea e mafai ai ona ta'ua le u'amea uelo o se u'amea e le gaoia superduplex.
ER2209 ER2553 ER2594 Uaea ueloFa'atulagaga Fa'akemikolo
| Vasega | C | Mn | Si | P | S | Cr | Ni |
| ER2209 | 0.03 maualuga | 0.5 – 2.0 | 0.9 maualuga | 0.03 maualuga | 0.03 maualuga | 21.5 – 23.5 | 7.5 – 9.5 |
| ER2553 | 0.04 maualuga | 1.5 | 1.0 | 0.04 maualuga | 0.03 maualuga | 24.0 – 27.0 | 4.5 – 6.5 |
| ER2594 | 0.03 maualuga | 2.5 | 1.0 | 0.03 maualuga | 0.02 maualuga | 24.0 – 27.0 | 8.0 – 10.5 |
Taimi na lafoina ai: Iulai-31-2023