WELDING & CUTTING
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OK 69.33
 
A fully austenitic rutile - basic 20.25.4, 5 weld metal with better corrossion resistance to sulphuric acid than lower alloyed weld metals of AISI 316L and 317L type.
 
Description and Applications
OK 69.33 is designed for welding of stainless steel with corresponding composition. This type of steel has better resistance to sulphuric acids than lower alloyed stainless steels. OK 69.33 is recommended for swedish Standard Standard steel SS 2562, Avesta 254 SLX UHB 904L, Sandvik 2 RK 65, 2R N65.
 
Welding current : DC+, AC > 65V
Diameter
mm
Length
mm
Current
Amps
Arc Volts
Approx
2.5 300 60-90 25
3.25 350 85-130 26
4.0 350 120-180 28
 
Deposition data at max welding current
Diam.
mm
Length
mm
Kg weld
metal
per kg of
electrodes
Number of
electrodes
per kg
weld metal
Kg weld
metal per
hour arc
time

Burn off
time per
electrode
secs
Weight
of weld
electrode
gm
2.50 300 0.58 80 1.0 45 13
3.25 350 0.58 41 1.5 52 21
4.00 350 0.51 30 1.9 64 34
 
Redrying : 250°C 2h
 
Classification
DIN 8556 : E 20 25 5 L Cu R
 
Typical weld metal composition%
C Si Mn Cr Ni Mo Cu
<0.030 0.5 1 20.5 25 5 1.5
 
Typical mechanical properties all weld metal specimens
0.2% proof stress 400 N / mm2
Tensile strength 575 N / mm2
Elongation 4xD 35%
 
Butt weld test
Test temp CVN impact values
+20°C 80J
-140°C 45J
 
Ferrite Number : 0
Approvals
TUV eignungsgeprüft
 
 
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