Low Alloy High Tensile

JACKSUN ULTRA 18M

AWS A5.5: E7018 A1

Premium low-alloy, high-tensile, iron-powder type electrode designed for structural applications requiring high strength and crack resistance.
Suitable for high-strength steels (up to 550–600 MPa) and low-temperature service.
Produces smooth, uniform weld beads with excellent slag detachability.
Operates on AC and DC+ polarity.
Ideal for bridges, heavy structures, pressure vessels, pipelines, and general fabrication.

1. Typical Chemical Composition of Weld Metal (% by weight)

C	Mn	Si	S	Ni	Cr	P	Mo
≤ 0.12	≤0.90	≤ 0.80	≤ 0.030	–	–	≤ 0.035	0.40-0.65

2. Typical Mechanical Properties of Weld Metal

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Toughness (J @ 0 °C)
Typical Values	560 – 610	470 – 510	24 – 28	55 – 75

3. Dimension, Current Condition & Packing Data (SMAW Welding)

Size (mm)	Size (inch)	Current Range (A)	Polarity	Voltage (V)	Packing (5 kg)	Packing (20 kg)
2.5	3/32	60 – 100	AC / DC+	20 – 22	✔	✔
3.2	1/8	90 – 140	AC / DC+	22 – 24	✔	✔
4.0	5/32	130 – 190	AC / DC+	24 – 26	✔	✔
5.0	3/16	180 – 250	AC / DC+	26 – 28	✔	✔

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