JACKSUN ULTRA 845 P2 H4R

AWS A5.5: E8045-P2

JACKSUN ULTRA 845 P2 H4R is a low-hydrogen, basic-coated, iron-powder electrode engineered for pipe welding and pressure vessel fabrication where higher strength and improved notch toughness are required.

Specially formulated for P2 group steels (Cr-Mo steels) as per ASME Section IX.
Provides excellent arc stability, minimal spatter, easy slag removal, and smooth bead finish.
Ensures low hydrogen levels (≤ 4 ml/100 g weld metal), meeting H4R classification for moisture resistance.
Suitable for root, fill, and cap passes in pipelines, boilers, and refinery piping.

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Technical Data

Product Specifications

1. Typical Chemical Composition

C	Mn	Si	Cr	Mo	S	P	Fe
≤ 0.12	0.80 – 1.20	≤ 0.90	0.40 – 0.65	0.45 – 0.65	≤ 0.020	≤ 0.025	Balance

2. Typical Mechanical Properties

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Toughness (J @ -30 °C)
Requirement	≥ 550	≥ 460	≥ 20	≥ 27
Typical Values	580 – 630	500 – 560	22 – 26	40 – 65

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	70 – 110	DCEP/DCEN (DC±)	20 – 22	✔	✔
3.2	1/8	90 – 140	DCEP/DCEN (DC±)	22 – 24	✔	✔
4.0	5/32	120 – 180	DCEP/DCEN (DC±)	24 – 26	✔	✔
5.0	3/16	160 – 220	DCEP/DCEN (DC±)	26 – 28	✔	✔

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