D&H 320LR (NS) is a non-synthetic all position electrode depositing 20Cr - 35Ni - 2.5Mo - 3.5Cu - Nb weld metal. The elements C, Si, P and S maintained as low as possible and Nb & Mn are controlled to get better properties. The weld metal has excellent resistance to o oxidation and scaling at 1200 C continuous service. Quiet and stable arc. Less spatter loss good bead appearance with equal ripples. The control on chemistry reduces the weld metal fissuring frequently encountered in fully austenitic stainless steel.
It is primarily used to weld base metals of similar composition for applications where resistance to severe corrosion is required for a wide range of chemicals including sulfuric and sulfurous acid and their salts. These electrodes can be used to weld both castings and wrought alloys of similar composition without post weld heat treatment. The typical applications include HV-9A stainless steel, for fabricating carpenter 20 stainless steels etc.
1. Ensure the electrodes are dry. Re-dry the electrodes at 250-300 C for one hour.
2. Use short arc, stringer bead, and smallest possible size of electrode and min. current
to reduce the heat input.
Note : D&H 320LR-15 (NS) conforming to AWS E320LR-15 is also available.
|Current Range (Amps)||150-180||110-140||80-100||60-80|
|Weight / Carton (kgs)||2.5||2.5||2.5||2.5|