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YAWATA 309R (For 22%Cr-12%Ni Stainless  Steel and Dissimilar Metals)

Clssification : AWS A 5.4 : E309-16,  JIS Z 3211 : ES309-16, DIN 8555 : E 23 12 R 26

Approvals : -

Application : Welding of 22%Cr-12%Ni stainless steel, dissimilar metals  such as 18%Cr-8%Ni stainless steels to mild steels or low alloy steels, 18%Cr-8%Ni stainless clad steel, and the  parts of hardenable steel for which posheat treatment is impossible, for petroleum, chemical and textile industries.
 

YAWATA 309R is a lime-titania type stainless steel electrode. 22%Cr-12%Ni deposited metal shows extremely high crack resistance due to its high ferrite content.
 
AWS A 5.4 : E309-16,  
JIS Z 3211
: ES309-16,
DIN 8555 : E 23 12 R 26
 
C
Si
Mn
P
S
Cr
Ni
Mo
Cu
Req.    
‚ȧ0.15
‚ȧ0.90
0.5-2.5
‚ȧ0.040
‚ȧ0.030
22.0-25.0
12.0-14.0
‚ȧ0.75
‚ȧ0.75
Typ.    
0.04
0.77
1.21
0.025
0.024
24.1
12.3
0.10
0.12
Req. = Requirement
Typ. = Typical results
N.S. = Not Specified
C.L. = Combined Limit for Mn + Ni + Cr + Mo + V
  Tensile Stregth
N/mm2 (kgf/mm2)
Elongation
%
Creep-rupture strength
(as welded, 650¬ļC x 1000h

N/mm2)
Req.¬† ¬†¬† ‚Č•550 ‚Č•30 N.S.
Typ.     590 42 120
Diameter/Length (mm) 2.0/300 2.6/350 3.2/350 4.0/350 5.0/350
Welding Position Current (A)
F 40-50 50-70 80-100 110-140 140-170
V, OH 35-45 45-60 70-90 100-130 -

< AC , DC+ >
1. Use dry electrodes only. Damp electrodes should be re-dried at 200ÔĹě250 ‚ĄÉ for 60 minutes before use.
2. Dirt such as oil, grease and dust should be completely removed from groove.
3. Excessively wide weaving may cause welding defects. Keep weaving width to less than 2.5 times electrode diameter.

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