Medium & High Tensile Steel Electrodes

SUPERLINK 7016

Name: SUPERLINK 7016
Brand: DEPL

AWS/SFA 5.1: E7016 IS 814: EB5326H2X (equivalent)

An extruded, heavy-coated, hydrogen-controlled (low hydrogen potassium) electrode. Weldable in all positions except vertical-down. Produces a stable arc with moderate penetration, uniform ripples, compact thick slag that is easily detachable, and X-ray quality welds. Excellent plasticity, impact toughness, and crack resistance. Suitable for AC and DC (DCEP).

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Weld metal analysis, %
C	Mn	Si	P	S
≤0.12%	1.60 %Max	. 75 % Max	≤0.035%	≤0.035%

Mechanical properties
Tensile strength	≥510 MPa
Yield strength	≥350MPa
Elongation	≥26%
Notes	CVN Impact: 47J @ −20°C;

Sizes and current ranges
Diameter	Current range
2.5mm	60–80A
3.15mm	90–120A
4.0mm	130–160A
5.0mm	170–210A

Welding procedure & parameters

AC or DC+ (DCEP). All positions except vertical-down. Short arc technique essential. Re-dry before use if exposed to moisture (250°C/1–2 hrs). Preheat recommended for thick sections (>25mm) and high-carbon steels. Typical amperages: 2.5mm: 60–80A; 3.15mm: 90–120A; 4.0mm: 130–160A; 5.0mm: 170–210A.

Typical applications

High-strength structural steels, heavy-duty boilers and pressure vessels, shipbuilding (Class A–E ship steels), bridges, railway wagons, coaches. Maintenance welding of cast steel, heat-treated steel, and wrought steel. Welding of 50 kgf/mm² class high-tensile steels. Buffer layer before hardfacing on higher-carbon steels.

Storage & handling notes

Low-hydrogen type: re-dry at 250°C–300°C for 1–2 hours before use. Diffusible hydrogen: ≤10 ml/100g weld metal. Store in sealed containers or holding oven (100°C–150°C) after opening.