OK 68.15

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OK 68.15 is a stainless-steel electrode which deposits a ferritic 13Cr weld metal. OK 68.15 is designed for welding steels of similar composition, when CrNi-alloyed austenitic stainless steel electrodes cannot be used, e.g. when the structure is going to be exposed to aggressive sulphuric gases. Depending on the welding parameters, the structure and consequently the mechanical properties of untreated weld metal can vary within fairly large limits.

Typical Charpy V-Notch Properties

Impact Value Testing Temperature
stress relieved aws
20 J (15 ft-lb) 6 hr 750 degC (1382 degF) -20 degC (-4 degF)
35 J (26 ft-lb) 6 hr 750 degC (1382 degF) 0 degC (32 degF)
55 J (41 ft-lb) 6 hr 750 degC (1382 degF) 20 degC (68 degF)

Typical Tensile Properties

ConditionElongationShielding GasTensile Strength Testing Temperature Testing TimeYield Strength
Stress Relieved25 %AWS520 MPa (75 ksi)750 degC (1382 degF)1 hr370 MPa (54 ksi)

Deposition Data

Current Deposition Rate @ 90% I max Diameter Deposition Efficiency (%) Number of electrodes/kg weld metal Voltage
65-115 A 48 sec 1.0 kg/h (2,2 lb/h) 2.5 x 350.0 mm (0.098 x 13,8 in.) 62 % 73 25 V
90-160 A 71 sec 1.5 kg/h (3,3 lb/h) 3.2 x 450.0 mm (1/8 x 17,7 in.) 63 % 33 25 V
120-220 A 73 sec 2.0 kg/h (4,4 lb/h) 4.0 x 450.0 mm (5/32 x 17,7 in.) 57 % 24 30 V


Classifications EN 14700 : E Fe7
EN ISO 3581-A : E 13 B 4 2
SFA/AWS A5.4 : E410-15
Werkstoffnummer : 1.4009


Grade UNA 272580
Society Seproz
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Type 13% Cr
Coating Type Lime Basic
Welding Current DC+

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Mn Ni Si
0.04 % 12.9 % 0.3 % 0.1 % 0.4 %

How to purchase OK 68.15

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Part Numbers and Accessories

Part Numbers : OK 68.15