OK 76.18

ESAB

OK 76.18

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OK 76.18 is an LMA electrode for welding creep-resistant steels of the 1.Cr0.5Mo type. The electrode welds with a quiet, stable arc and produces a minimum of spatter loss. OK 76.18 deposits a weld metal which is resistant to cracking as well as porosity. The scaling temperature of the weld metal is about 575°C.

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Typical Charpy V-Notch Properties

PWHT
Impact Value 74 ft-lb
Impact Value 100 J
Shielding Gas ISO
1274 °F
690 °C
1 hr
Testing Temperature 68 °F
Testing Temperature 20 °C

Typical Tensile Properties

ConditionElongationShielding GasTensile Strength Testing Temperature Testing TimeYield Strength
PWHT24 %ISO670 MPa (97 ksi)690 degC (1274 degF)1 hr580 MPa (84 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
55-80 A 40 sec 0.7 kg/h (1,5 lb/h) 2.0 x 300.0 mm (5/64 x 11,8 in.) 58 % 136.0 22 V
70-110 A 52 sec 0.8 kg/h (1,8 lb/h) 2.5 x 300.0 mm (0.098 x 11,8 in.) 58 % 88.0 24 V
95-150 A 65 sec 1.1 kg/h (2,4 lb/h) 3.2 x 350.0 mm (1/8 x 13,8 in.) 59 % 49.0 25 V
130-190 A 90 sec 1.7 kg/h (3,7 lb/h) 4.0 x 450.0 mm (5/32 x 17,7 in.) 64 % 23.0 27 V
150-260 A 95 sec 2.7 kg/h (6,0 lb/h) 5.0 x 450.0 mm (0.197 x 17,7 in.) 64 % 14.5 28 V

Classifications

Classifications SFA/AWS A5.5 : E8018-B2
EN ISO 3580-A : E CrMo1 B 4 2 H5

Approvals

Approvals ABS SR H5
BV Welding of low alloy steels type 1%Cr 0.5%Mo, H5
CE EN 13479
DNV-GL -H5
NAKS/HAKC 2.5-4.0 mm
VdTÜV 01387
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Type Low alloyed (1.25 % Cr ; 0.5 % Mo)
Coating Type Basic covering
Diffusible Hydrogen < 5ml/100g
Welding Current DC+(-)

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Mn Mo Si
0.06 % 1.3 % 0.7 % 0.5 % 0.3 %
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Part Numbers and Accessories

Part Numbers : OK 76.18
76182020K0 FIND A DISTRIBUTOR
76182520K0 FIND A DISTRIBUTOR
76183230G0 FIND A DISTRIBUTOR
76184040G0 FIND A DISTRIBUTOR
76185040G0 FIND A DISTRIBUTOR
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