Exaton 25.22.2.LMnB

Exaton

Exaton 25.22.2.LMnB

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Exaton 25.22.2.LMnB is a chromium-nickel-molybdenum covered electrode with basic coating for welding of austenitic stainless steels for example, Sandvik 2RE69 and Sandvik 3R60 U.G 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.

Exaton 25.22.2.LMn is used for welding of Sandvik 2RE69 and Sandvik 3R60 U.G. 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.

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Typical Charpy V-Notch Properties

As Welded
Impact Value 52 ft-lb
Impact Value 70 J
Shielding Gas ISO
Testing Temperature 68 °F
Testing Temperature 20 °C

Typical Tensile Properties

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

Deposition Data

Current Deposition Rate @ 90% I max Diameter Deposition Efficiency (%) Number of electrodes/kg weld metal
60-80 A 0.0 kg/h (0,0 lb/h) 2.5 x 300.0 mm (0.098 x 11,8 in.)
80-110 A 55 sec 1.7 kg/h (3,7 lb/h) 3.2 x 350.0 mm (1/8 x 13,8 in.) 64 % 31
110-140 A 75 sec 2.3 kg/h (5,1 lb/h) 4.0 x 350.0 mm (5/32 x 13,8 in.) 53 % 15

Classifications

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

Consumable Characteristics

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

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Cu FN WRC-92 Mn Mo N Ni P S Si
<=0.04 % 25 % 0.05 % 0 % 4.5 % 2.1 % 0.14 % 22 % <=0.020 % <=0.020 % 0.4 %
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Part Numbers and Accessories

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