COSMAX – 347

Classification : AWS :E347-16 , IS 5206 : E 19.9.NbR16

Characteristics : COSMAX-347 is a rutile type low carbon 19/10 Nb stabilised stainless steel electrode.The deposit resists sensitisation when heated in the range of 425°C – 850°C.Excellent performance in all conventional welding positions.The electrode can be used in any position without any difficulty. Weld metal has excellent resistance to intergranular corrosion.

Applications : COSMAX- 347 is ideally suited for joining as well as surfacing of Cr 18, Ni 8 stainless steel and clad steel of similar composition. For welding of gas turbines and equipment in soap industries. Steel conforming to AISI 304, 321, 347 and their equivalents can be welded with stainarc 347.

Weld Metal Properties (%)

C = 0.08 Max    Mn = 1.0-2.5
Si = 0.90           Cr= 18.0-21.0
Ni = 9.0-11.0      Nb = 0.50-1.0

All Weld Mechanical Properties

UTS = 550-690 N/mm2
YS = 400 N/mm2
Elong (L=4d) % = 30-40 Min
CVN Impact Value Temp°C at J
27±2°C 60-90
Current Condition- AC or DC (+)
Ferrite-i- 5-9 FN

Precautions : Use short arc length, low current & avoid weaving. Re-dry the electrodes at 200°C for two hour.

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