D&H 446L is a unique electrode depositing a stainless steel weld metal having a nominal composition of 16Cr - 4.5Ni - 3.5Cu - Cb weld metal. The weld metal possesses excellent properties and attains high strength on heat treatment. It is ideally suited for welding martensitic precipitation hardening stainless steels of the type 17-4 PH etc.
1. Ensure the electrodes are dry. Re-dry the electrodes at 250-300°C for one hour.
2. It is preferable to weld the 17-4 PH materials in the solution treated and quenched condition.
3. When welded in the solution treated and quenched condition, the 17-4 PH materials do not require preheat.
(Heated to 1025°C-1050°C, held for one hour, and air cooled to ambient, and then precipitation hardened at 610-630°C, held for four hours and air cooled to ambient.)
|Current Range (Amps)||150-180||110-140||80-100||60-80|
|Weight / Carton (kgs)||2.5||2.5||2.5||2.5|