Stainless Steel

JACKSUN NOVA 630

AWS A5.4: E630-16

JACKSUN NOVA 630 is a rutile-coated precipitation-hardening stainless steel electrode conforming to AWS A5.4 E630-16 and EN ISO 3581-A E 17-4 R 26.
Specially designed for welding 17-4PH (UNS S17400, X5CrNiCuNb16-4) and other precipitation hardening stainless steels.
Deposits martensitic stainless weld metal that can be heat-treated to develop high strength and toughness.
Suitable for repair welding of 17-4PH castings and forgings.
Recommended for applications in aerospace, petrochemical, marine, and turbine components.
Weld metal provides excellent corrosion resistance and scaling resistance up to 600 °C.(As per AWS A5.4 E630-16 / EN ISO 3581-A E 17-4 R 26)(Properties may be further enhanced by heat treatment at 550–600 °C for precipitation hardening)

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

C	Mn	Si	Cr	Ni	Cu	Nb + Ta	Mo	P	S	Cu
≤ 0.05	≤ 1.00	≤ 0.90	16.0 – 17.0	4.5 – 6.0	3.25 – 4.0	0.15 – 0.45	≤ 0.75	≤ 0.04	≤ 0.03	3.25-4.00

2. Mechanical Properties of Weld Metal (As-Welded)

Property	Requirement	Typical Values
UTS (MPa)	≥ 930	880 – 950
Yield Strength (MPa)	≥ 650	680 – 720
Elongation (%)	≥ 7	10 – 20
Impact Toughness (J at RT)	≥ 27	30 – 40

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	50 – 80	AC / DCEP	20 – 22	✔	✔
3.2	1/8	70 – 110	AC / DCEP	22 – 24	✔	✔
4.0	5/32	110 – 150	AC / DCEP	24 – 26	✔	✔
5.0	3/16	140 – 190	AC / DCEP	26 – 28	✔	✔

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