Exaton 25.22.2.LMn-15


Exaton 25.22.2.LMn-15

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25.22.2.LMn-15 is a chromium-nickel-molybdenum covered electrode with basic coating for welding of austenitic stainless steels for example, UNS S31050, 1.4466 or UNS S31603, 1.4435. used in the production of ammonium carbamate, nitric acid and inorganic acids. It is also used for surfacing on low alloyed steels. The electrode combines good welding properties such as arc stability, low spatter and self peeling slag with very low impurity levels. The fully austenitic weld metal (maximum 0.6% ferrite) is very resistant to hot cracking. 25.22.2.LMn-15 is used for welding UNS S31050, 1.4466 or UNS S31603, 1.4435. urea grade materials. But it can also be used for the following types: ISO 1.4466, 1.4335, 1.4435, 1.4436, 1.4477, 1.4578 and 1.4585; UNS S31050, S31002, S31603 and S31600.


Exaton 25.22.2.LMn-15


Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr FN WRC-92 Mn Mo N Ni P S Si
<=0.04 % 25 % 0 % 4.5 % 2.1 % 0.14 % 22 % <=0.020 % <=0.020 % 0.4 %

Typical Charpy V-Notch Properties

Testing Temperature 20 degC
Testing Temperature 68 degF
Shielding Gas ISO
Impact Value (met) 70 J
Impact Value (imp) 52 ft-lb
As Welded


Grade (E310Mo-15)
Name SFA/AWS A5.4
Grade E 25 22 2 N L B 12
Name EN ISO 3581-A

Consumable Characteristics

Welding Current DC+
Ferrite Content FN 0
Coating Type Basic
Alloy Type 25Cr 22Ni 2Mo N

Typical Tensile Properties

ConditionElongationShielding GasTensile Strength (imp)Yield Strength (imp)
As Welded30 %ISO600 MPa (87 ksi)420 MPa (61 ksi)

Deposition Data

Current Deposition Rate Diameter Number of electrodes/kg weld metal kg weld metal/kg electrodes
60-80 A 2.5 x 300 mm
80-110 A 55 sec 1.7 kg/h(3.7 lb/h) 3.2 x 350 mm(1/8 x 14 in.) 31 0.64 kg
110-140 A 75 sec 2.3 kg/h(5.1 lb/h) 4.0 x 350 mm(5/32 x 14 in.) 15 0.53 kg