Medium and High Tensile Steel

ULTRATHERME-H4R

AWS: SFA 5.5 E11018-G H4R

Ultratherme-H4R is moisture resistant hydrogen controlled basic coated electrode. It is ideally suited for welding high strength low alloy steels, fine-grained steels, Q&T steels, etc. The weld metal possesses high strength combined with good toughness properties. Ideal for welding high strength steels used in earth moving industry, etc.

Precaution

1. Restrict the heat input, use short arc and stringer bead.

2. Re-dry the electrodes at 250 C for 1 hour, if expose to atmosphere.

TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL (%)

Element	C	Mn	Si	Mo	Ni	Cr	S	P
Percent	0.06	1.40	0.25	0.50	2.20	0.20	0.018	0.018

TYPICAL MECHANICAL PROPERTIES OF ALL WELD METAL

UTS	YS	Elongation	CVN Impact Strength (J)
(MPa)	(MPa)	(L= 4d)%	at Minus 40°C
790	700	19	35

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

MOISTURE AS CONDITIONED : 0.15 Max

O MOISTURE AS EXPOSED (80% RH, 27 C FOR 9 HRS) : 0.40 Max

ADVANTAGE : Electrodes are Vacuum packed, no need of drying and can be used straight on

the job.

CURRENT & PACKING DATA: AC / DC (+)

Size (mm)	5x450	4x450	3.15x450	2.5x350
Current Range (Amps)	200-260	140-190	100-150	70-100
Qty. (Pcs./Carton)	2	2	2	2