Duplex stainless steel powder 2205-2507 – 2707

Duplex Stainless Steel (DSS) is a multiphase structural metal material consisting of a comparable volume fraction of ferrite (α) and austenite (γ). It integrates the advantages of ferritic stainless steel and austenitic stainless steel, with excellent corrosion resistance, high strength and good plasticity.

Compared with traditional casting processes, the advantage of 3D printing of DSS is the ability to freely manufacture complex parts directly from powders, without involving traditional manufacturing methods such as extrusion, forging, casting and secondary processing to obtain the desired shape, and the mechanical properties of the material can meet or exceed the casting level.

Our commonly produced duplex stainless steel powders include 2205 (EN 1.4462), 2507(EN 1.441) and 2707. Their chemical composition is showed in Table 1.

Table 1 Chemical composition of 2205, 2507, 2707 (wt%)

Among them, the super duplex stainless steel 2507 is specially designed for Marine, chemical and petroleum engineering applications which has excellent pitting resistance, good corrosion resistance and high mechanical properties in harsh environments such as containing chloride acids.

Figure 1 shows the SEM morphology of 2507 super duplex stainless steel powder produced by Truer. The powder has good sphericity, smooth surface and few satellite balls.

Figure 1 SEM morphology of 2507 powder

Below is our COA (datasheet) of 2507 powder with PSD 45-105um produced by vacuum gas atomizing process, including chemical composition and some typical powder properties.