Cromotherme-12
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Electrodes for Creep Resisting Steels

CROMOTHERME-12

EN ISO CODE: 3580-A E CrMoWV12 B42

Cromotherme-12 is a lime-fluoride type electrode yielding a deposit containing 11Cr - 0.5Ni - 1.0Mo - 0.3V - 0.5W. The weld metal has excellent creep and oxidation resistant properties up to 700°C. The electrode is used for welding creep resistant 12Cr steels in turbines, steam boilers and chemical plant, where operating temperatures of the order of 600°C are encountered. Following are some of the creep-resistant steels that can be welded.

DIN: X 20 Cr Mo 12 1, X 22 Cr Mo V 12 1 , X 20 Cr Mo W V 12 1, G X 22 Cr Mo MV 12 1

Precaution

1. Ensure the electrodes are dry. Re-dry the electrodes at 300°C for 2 hours.

2. Use short arc and stringer bead.

CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
CMnSi

S

PCrMoNiVW
Percent
0.180.900.400.0200.02011.01.000.500.300.50


MECHANICAL PROPERTIES OF ALL WELD METAL

(PWHT : 740°C-780°C FOR 2 HRS)

UTSYSElongation
CVN Impact Strength
(MPa)
(MPa)
(L= 5d)%
At +20°C (Joules)
73066018
50


CURRENT AND PACKING DATA: DC (+)


Size (mm)
5x3504x350
3.15x350
2.5x350
Current Range (Amps)
180-220140-180
100-140
70-90
Qty. (Pcs./Carton)
3555
75125


Electrodes for Creep Resisting Steels

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