Hyundai SMT-625 description:
SMT-625 is a wire with about 68%Ni+22%Cr+9%Mo+3.5%Nb for strong tough corrosion and heat resistant deposit.
No preheat required and maximum interpass of 250C(482F). When welding superaustenitic alloys the interpass temperature should be controlled to a maximum of 100C(212F).