ERNiCu-7 Nickel-Copper TIG Rods

Category： TIG Rods

Inquire Now

ERNiCu-7 Nickel-Copper TIG Rods

GB/T 15620 SNi4060 | AWS A5.14

1. Chemical Composition (wt.%)

	C	Mn	Fe	P	S	Si	Cu	Ni	Ti	Al	Others
GB/T	≤0.15	2.0-4.0	≤2.5	≤0.02	≤0.015	≤1.20	28.0-32.0	≥62.0	1.5~3.0		≤0.5
AWS	≤0.15	≤4.0	≤2.5	≤0.02	≤0.015	≤1.25	Balance	62.0-69.0	1.5~3.0		≤0.5
Example	0.026	3.42	1.8	<0.001	<0.001	0.17	27.96	65.2	1.78		≤0.5

2. Mechanical properties of all-weld metal – typical values

	Proof Stress Rp0.2 (MPa)	Tensile Strength Rm (MPa)	Elongation A (%)	Impact Energy J / °C
GB/T	200	480	27	-
AWS	-	480	30	-
Typical value	360	485	39.5	-

3. Description and Applications

1. ERNiCu-7 is a nickel-copper alloy solid welding wire with a nominal composition of 65Ni-30Cu-3Mn-Ti.

It provides a stable arc and smooth weld bead appearance. Its titanium content helps control weld porosity and supports favorable deposited-metal mechanical properties.

2. Suitable for joining nickel-copper alloys, dissimilar welding of nickel-copper alloys to steel, and weld overlay on steel.

X-ray radiographic inspection: Grade I

4. Available Diameters

	TIG
Diameter (mm)	1.6、2.0、2.4、3.0

5. Welding Precautions

1. Remove all oil, rust, lubricants, moisture, marker ink, and other surface contaminants from the weld area before welding.

2. Keep heat input as low as practicable to reduce the risk of hot cracking. A low interpass temperature, preferably below 100°C, is recommended.

3. For outdoor welding, provide wind protection when wind speed exceeds 1.5 m/s; inadequate shielding gas coverage may cause weld bead deterioration and porosity.

4. For TIG welding, a tungsten electrode extension of approximately 5 mm beyond the nozzle and an arc length of 1–3 mm are recommended.

Keywords： ERNiCu-7 Nickel-Copper TIG Rods

Previous page： ERNiCrMo-3 Nickel-Chromium-Molybdenum TIG Rods

Next page： ERNiCr-3 Nickel-Chromium Alloy TIG Rods

Our Production Line

Continuous bright annealing furnace

1.5-ton vacuum induction melting furnace manufactured by American Consarccorporation

B+S precision lengthways cutter sets

American l2S 20-roll Sengemeier cold rolling mill

Four-high and six-high reversing cold rolling mill

5-ton electro-hydraulic hammer

Intermediate frequency induction furnace