Tech-Rod 2594 description: Tech-Rod 2594 is a super-duplex grade electrode that provides matching chemistry and mechanical property characteristics to wrought superduplex alloys such as 2507 and Zeron 100, as well as to super-duplex casting alloys (ATSM A890). The electrode is over-alloyed 2-3% in nickel to provide the optimum ferrite/austenite ratio in the finished weld. This structure results in high tensile and yield strengths and superior resistance to SCC and pitting corrosion.