• Cromotherme-12
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Electrodes for Creep Resisting Steels

CROMOTHERME-12

AWS: SFA

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

Approvals
CHEMICAL COMPOSITION OF ALL WELD METAL (%)

 

Element C Mn Si

S

P Cr Mo Ni V W
Percent 0.18 0.90 0.40 0.020 0.020 11.0 1.00 0.50 0.30 0.50

 

MECHANICAL PROPERTIES OF ALL WELD METAL

(PWHT : 740°C-780°C FOR 2 HR)

UTS YS Elongation CVN Impact Strength
(MPa) (MPa) (L= 5d)% At +20oC (Joules)
730 660 18 50

 

CURRENT AND PACKING DATA: DC (+)

 

Size (mm) 5x350 4x350 3.15x350 2.5x350
Current Range (Amps) 180-220 140-180 100-140 70-90
Qty. (Pcs./Carton) 35 55 75 125

 

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