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Molytherme-H4R is moisture resistant hydrogen controlled basic coated electrode depositing 0.5Mo weld metal of radiographic quality. The weld metal possesses excellent mechanical properties at room and at elevated temperature. It is ideally suited for welding C - 0.5Mo steels, plates, pipes for pressure vessels, boilers etc. The weld metal possesses good creep strength up to 525°C.
1. Restrict the heat input, use short arc and stringer bead.
2. Re-dry the electrodes at 250°C for one hour, if expose to atmosphere.
|UTS||YS||Elongation||Creep Strength at 525°C|
|(MPa)||(MPa)||(L= 4d)%||(1% offset in 10,000 hrs)|
4.0 ml/100 gms of weld metal
Electrodes are Vacuum packed, no need of drying and can be used straight on the job.
|Current Range (Amps)||170-240||140-170||90-120||70-90|