JACKSUN ULTRA 945 P2 H4R

AWS A5.5: E9045-P2EN ISO 2560-A: E 62 5 B 3 2 H4REN ISO 2560-B: E6245-P2

JACKSUN ULTRA 945 P2 H4R is a low-hydrogen, basic-coated, iron-powder type SMAW electrode for welding Cr-Mo steels (P2 group) requiring higher tensile strength than the E8045-P2 class.

Specially designed for refinery, petrochemical, boiler, and piping applications operating at elevated temperatures.
Produces smooth welds with excellent slag detachability, and low spatter.
The H4R classification ensures very low diffusible hydrogen (< 4 ml/100 g weld metal) and moisture-resistant flux coating.
Exhibits creep resistance and toughness at high service temperatures.

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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	≥ 620	≥ 520	≥ 17	≥ 27
Typical Values	640 – 680	540 – 590	20 – 25	40 – 60

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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