Stainless Steel

JACKSUN NOVA 308H

SPECIFICATIONS - AWS A5.4 E308H-16

JACKSUN NOVA 308H is a rutile-coated stainless steel electrode conforming to AWS A5.4 E308H-16, designed for welding high-carbon 18Cr-8Ni stainless steels (AISI 304H, 308H, and equivalents). The higher carbon content (0.04–0.08%) improves high-temperature strength and creep resistance, making it suitable for applications in petrochemical plants, boilers, superheaters, and heat exchangers operating at elevated temperatures.

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

C	Mn	Si	Cr	Ni	Mo	S	P	Cu
0.04–0.08	0.5–2.5	≤0.90	18.0–21.0	9.0–11.0	0.75	≤0.03	≤0.04	0.75

2. Mechanical Properties of Weld Metal

Property	UTS (MPa)	Proof Strength (MPa)	Elongation (%)	Impact Toughness (J at RT)
Typical Values	550–570	350–390	30–34	50–65

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	60–90	AC/DCEP	20–25	✔	✔
3.2	1/8	80–120	AC/DCEP	22–28	✔	✔
4.0	5/32	100–150	AC/DCEP	24–30	✔	✔
5.0	3/16	130–180	AC/DCEP	26–32	✔	✔

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