OK 67.70

ESAB

OK 67.70

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Acid rutile MMA-electrode giving an over alloyed weld metal. Suitable for welding acid resistant stainless steels to mild and low alloyed steels. Also suitable for welding buffer layers when surfacing mild steel with acid resistant stainless steel weld metal.

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Typical Charpy V-Notch Properties

Impact Value Testing Temperature
as welded iso
35 J (26 ft-lb) -20 degC (-4 degF)
50 J (37 ft-lb) 20 degC (68 degF)

Typical Tensile Properties

ConditionElongationShielding GasTensile Strength Yield Strength
As Welded32 %ISO610 MPa (88 ksi)510 MPa (74 ksi)

Deposition Data

Current Fusion time per electrode at 90% I max Deposition Rate @ 90% I max Diameter Deposition Efficiency (%) Number of electrodes/kg weld metal Voltage
40-60 A 48 sec 0.6 kg/h (1,3 lb/h) 2.0 x 300.0 mm (5/64 x 11,8 in.) 58 % 147 26 V
50-90 A 45 sec 0.9 kg/h (2,0 lb/h) 2.5 x 300.0 mm (0.098 x 11,8 in.) 57 % 94 29 V
60-120 A 61 sec 1.4 kg/h (3,1 lb/h) 3.2 x 350.0 mm (1/8 x 13,8 in.) 59 % 47 27 V
85-180 A 56 sec 2.0 kg/h (4,4 lb/h) 4.0 x 350.0 mm (5/32 x 13,8 in.) 61 % 32 31 V
110-250 A 64 sec 2.7 kg/h (6,0 lb/h) 5.0 x 350.0 mm (0.197 x 13,8 in.) 59 % 20 30 V

Classifications

Classifications EN ISO 3581-A : E 23 12 2 L R 3 2
SFA/AWS A5.4 : E309LMo-17
CSA W48 : E309LMo-17
Werkstoffnummer : 1.4459

Approvals

Approvals ABS SS to C&C/Mn steels
BV 309Mo
CE EN 13479
CWB CSA W48: E309LMo-17
DB 30.039.05
DNV-GL VL 309 Mo
LR SS/CMn
NAKS/HAKC 3.2 mm
RINA 309Mo
Seproz UNA 272580
VdTÜV 02424
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Type Austenitic CrNi
Coating Type Acid Rutile
Ferrite Content FN 12-22
Welding Current DC+, AC

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Mn Mo N Ni Si Si+Fe
0.02 % 22.5 % 0.6 % 2.8 % 0.09 % 13.4 % 0.8 % 18 %
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Part Numbers and Accessories

Part Numbers : OK 67.70
6770202030 FIND A DISTRIBUTOR
67702020L0 FIND A DISTRIBUTOR
6770252030 FIND A DISTRIBUTOR
67702520L0 FIND A DISTRIBUTOR
6770323020 FIND A DISTRIBUTOR
67703230T0 FIND A DISTRIBUTOR
6770403020 FIND A DISTRIBUTOR
67704030G0 FIND A DISTRIBUTOR
67705030G0 FIND A DISTRIBUTOR
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