Hobart SDX NiCrMo-3 description: DX NiCrMo-3 is a nickel-based alloy solid wire for the submerged arc welding of nickel alloys (such as Inconel 625) and some stainless/low-alloy steels and dissimilar combinations. SDX NiCrMo-3 provides excellent resistance to corrosion and hot cracking. Hobart recommends using this wire with the following flux(es): SWX 282.