OERLIKON SPEZIAL E7016-H8 ELECTRODE 2.5MM
Premium Low-Hydrogen Stick Electrode for High-Strength Structural Welding
Product Overview
The OERLIKON SPEZIAL E7016-H8 is a 2.5mm diameter, low-hydrogen, potassium-type covered electrode engineered for welding medium to high-tensile carbon steel structures where crack resistance and weld integrity are critical. Classified under AWS A5.1 as E7016, this electrode delivers a tensile strength of approximately 70,000 psi (490 MPa) with excellent mechanical properties across a wide range of structural, pressure vessel, and general fabrication applications.
Key Features
- Low-Hydrogen Coating (H8 Designation) — Diffusible hydrogen content controlled to ≤8 mL/100g of deposited weld metal, significantly reducing the risk of hydrogen-induced cracking (HIC), especially on higher carbon or restrained joints
- Smooth, Stable Arc — Potassium-based flux coating provides easy arc ignition, low spatter, and consistent arc stability in both AC and DC (electrode positive) welding
- Excellent Weld Bead Appearance — Produces a fine-rippled, self-releasing slag for easy removal and a clean, uniform bead profile
- All-Position Welding — Suitable for flat, horizontal, vertical, and overhead positions
- High Mechanical Strength & Toughness — Delivers good impact toughness even at sub-zero temperatures, making it ideal for structural steel exposed to dynamic or impact loading
- X-Ray Quality Deposits — Sound, porosity-free welds suitable for radiographic inspection on critical joints
Technical Specifications
| Parameter | Detail |
|---|---|
| AWS Classification | E7016-H8 |
| Diameter | 2.5 mm |
| Coating Type | Low-hydrogen potassium (basic) |
| Tensile Strength | ~490 MPa (70,000 psi) |
| Current Type | AC / DC+ |
| Diffusible Hydrogen | ≤8 mL/100g |
| Welding Positions | All positional (1G–4G, 1F–4F) |
Recommended Applications
- Structural steel fabrication (beams, columns, trusses)
- Shipbuilding and marine structures
- Pressure vessels and boiler components
- Bridges and heavy engineering structures
- General repair and maintenance welding on carbon and low-alloy steels
- Joints requiring crack-resistant, high-integrity welds
Storage & Handling Tips
Low-hydrogen electrodes like the E7016-H8 are moisture-sensitive. For best results:
- Store in a dry, controlled environment
- Use a holding oven (100–150°C) once the original packaging is opened
- Re-bake as per manufacturer guidelines if exposure to humidity is suspected, to maintain the H8 hydrogen rating
Why Choose OERLIKON SPEZIAL E7016-H8?
Backed by OERLIKON's reputation for consistent weld quality, this electrode is a trusted choice among fabricators, contractors, and welding professionals who need reliable, code-compliant welds on structural and pressure-critical applications. Its low-hydrogen formulation makes it especially suited for thicker sections, higher carbon equivalent steels, and jobs where weld cracking simply isn't an option.