ER 2209 is designed to weld duplex stainless steels such as 2205 (UNS Number N31803).
ER 2553 is used primarily to weld duplex stainless steels which contain approximately 25% chromium.
ER 2594 is a superduplex welding wire. The Pitting Resistance Equivalent Number (PREN) is at least 40, thereby allowing the weld metal to be called a superduplex stainless steel.
ER2209 ER2553 ER2594 Welding wire Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Ni |
| ER2209 | 0.03 max | 0.5 – 2.0 | 0.9 max | 0.03 max | 0.03 max | 21.5 – 23.5 | 7.5 – 9.5 |
| ER2553 | 0.04 max | 1.5 | 1.0 | 0.04 max | 0.03 max | 24.0 – 27.0 | 4.5 – 6.5 |
| ER2594 | 0.03 max | 2.5 | 1.0 | 0.03 max | 0.02 max | 24.0 – 27.0 | 8.0 – 10.5 |
Post time: Jul-31-2023