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Electrodes for Creep Resisting Steels

CROMOTHERME-1(H4R)

AWS: SFA 5.5 E8018-B2 H4R

Cromotherme-1(H4R) is basic coated, low hydrogen, moisture resistance type electrode. Weld metal display remarkable strength and creep resistance at elevated o temperatures up to 550°C. Electrode is used for welding creep resistant 0.5Cr - 0.5Mo and 1Cr - 0.5Mo steels. Typical applications include steam boiler construction, welding of steam and super-heater piping, power plants, oil refinery and chemical plants.

Precaution

1. Use short arc and stringer bead  

2. Re-dry the electrodes at 250°C for one hour, if expose to atmosphere.

CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
CMnSi

S

PCrMo
Percent
0.060.800.440.0220.0231.350.55


MECHANICAL PROPERTIES OF ALL WELD METAL

(PWHT : 690°C FOR 1 HR)

UTSYSElongation
(MPa)
(MPa)
(L= 4d)%
60052025.0

MOISTURE

As Conditioned : 0.20 % Max. 

As Exposed : 0.40 % Max. (27 C and 80% Relative Humidity for 9 Hours)


DIFFUSIBLE HYDROGEN CONTENT: 4 ml/100 gms of weld metal Max.

CURRENT AND PACKING DATA: DC (+)


Size (mm)
5x4504x3503.15x350
2.15x350
Current Range (Amps)
180-240140-180100-130
70-100
Qty. (Pcs./Carton)
355575
100


ADVANTAGE


Electrodes are Vacuum packed, no need of drying and can be used straight on the job.