Exaton 20.25.5.LCuR

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Exaton 20.25.5.LCuR is a covered electrode with type with rutile-basic coating and normal recovery, used for welding of high-alloy austenitic stainless of UNS N08904 type, also known as 904L (e.g. Sandvik 2RK65). Exaton 20.25.5.LCuR gives a fully austenitic chromium-nickel-molybdenum weld metal with especially low carbon content and copper addition. Spray transfer gives a bead with a finely rippled surface, little spatter and good slag removal. It is suitable for joining steels of the 20Cr/25Ni/4.5Mo/1.5Cu type such as 2RK65 and 904L used in many areas of the process industry, such as in the production of acetic acid, sulphuric acid, terephthalic or tartaric acid and vinyl chloride as well as other chloride containing media. It is also suitable for use in cooling operations involving sea water or heavily polluted river water. Exaton 20.25.5.LCuR may also be used to join 317L where improved corrosion resistance in specific media is required. These electrodes may be used to join 2RK65, 904L, and 317L to other grades of stainless steel.

Typical Charpy V-Notch Properties

As Welded
Impact Value 48 ft-lb
Impact Value 65 J
Shielding Gas ISO
Testing Temperature 68 °F
Testing Temperature 20 °C

Typical Tensile Properties

ConditionElongationShielding GasTensile Strength Yield Strength
As Welded35 %ISO590 MPa (86 ksi)410 MPa (59 ksi)

Deposition Data

Current Deposition Rate @ 90% I max Diameter Deposition Efficiency (%) Number of electrodes/kg weld metal Voltage
60-85 A 44 sec 0.9 kg/h (2.0 lb/h) 2.5 x 300.0 mm (0.098 x 11.8 in.) 60 % 91 24 V
85-130 A 60 sec 1.5 kg/h (3.3 lb/h) 3.2 x 350.0 mm (1/8 x 13.8 in.) 58 % 41 27 V
95-180 A 64 sec 1.9 kg/h (4.2 lb/h) 4.0 x 350.0 mm (5/32 x 13.8 in.) 51 % 30 29 V


Classifications EN ISO 3581-A : E 20 25 5 Cu N L R 3 2
SFA/AWS A5.4 : E385-16
Werkstoffnummer : 1.4519


Approvals CE EN 13479
VdTÜV 02805
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Type Austenitic CrNiMo
Coating Type Basic Rutile
Ferrite Content FN 0
Welding Current AC, DC+

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Cu Mn Mo Ni Si
0.03 % 20 % 1.5 % 1 % 4.7 % 25 % 0.5 %

How to purchase Exaton 20.25.5.LCuR

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Part Numbers and Accessories

Part Numbers : Exaton 20.25.5.LCuR