ER 2209ua mamanuina e ueloina duplex u'amea u'amea pei ole 2205 (UNS Numera N31803).
ER 2553o lo'o fa'aaoga muamua e u'u ai u'amea u'amea lua e aofia ai pe tusa ma le 25% chromium.
ER 2594o se uaea uelo superduplex.Ole Pitting Resistance Equivalent Number (PREN) e le itiiti ifo i le 40, ma faʻatagaina ai le uʻamea e taʻua o le superduplex stainless steel.
ER2209 ER2553 ER2594 Uila uaeaFa'asu'esu'ega o vaila'au
| 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 meli: Iul-31-2023