AWS: 5.4 E320LR-16; D&H 320LR(NS); Stainless Steel Electrodes


Description

AWS: SFA 5.4 E320LR-16

EN ISO CODE: 3581-A E Z R 3 2

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.

Approvals
CE
TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL:


Element
C Mn Si S P Cr Ni Mo Cu Nb+Ta
Percent
0.020 1.60 0.25 0.011 0.013 20.5 34.0 2.50 3.5 0.35


TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL


UTS Elongation
(MPa)
(L= 5d)%
590.0 37


CURRENT AND PACKING DATA: AC / DC(+)


Size (mm)

Dia x Length

5x350 4x350
3.15x350
2.5x350
Current Range (Amps)
150-180 110-140
80-100
60-80
Weight / Carton (kgs)
2.5 2.5
2.5
2.5

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