TOKO AWS A5.28 ER80S-Ni2 Welding Wire

TOKO AWS A5.28 ER80S-Ni2 Welding Wire | Used for welding high-strength, low-temperature industries of Cryogenic storage tanks and LNG infrastructure,Arctic pipelines, offshore platforms, and shipbuilding.

1. Standard & Classification:

• AWS A5.28 Compliance: Conforms to the American Welding Society (AWS) specification for carbon and low-alloy steel gas metal arc welding (GMAW) electrodes.
• ER80S-Ni2 Designation:
✔80: Minimum tensile strength of 80ksi (80,000 psi).
✔S: Solid wire (requires external shielding gas).
✔Ni2: Contains ~2% nickel for enhanced low-temperature toughness.

2. Composition & Coating

• Low-Alloy Steel Core: Optimized with nickel (Ni), manganese (Mn), and other trace elements to improve strength and ductility.
• Copper Coating:
✔Enhances electrical conductivity for stable arc performance.
✔Reduces contact tip wear and spatter.
✔Provides mild corrosion resistance during storage.

3. Key Properties

• High Toughness at Low Temperatures: Nickel content ensures ductility and resistance to brittle fracture in subzero environments (e.g., -50°C/-60°F).
• Mechanical Performance:
✔Tensile Strength: ≥80 ksi.
✔Impact Toughness: Excellent Charpy V-notch values at low temperatures.

• Smooth Metal Transfer: Stable arc with minimal spatter in spray or globular transfer modes.

4. Applications

✅Materials: Used for welding high-strength, low-temperature steels such as:
✔ASTM A333 (low-temp piping).
✔ASTM A537 (pressure vessels).
✔HSLA (high-strength low-alloy) steels.
✅Industries:
✔Cryogenic storage tanks and LNG infrastructure.
✔Arctic pipelines, offshore platforms, and shipbuilding.
✔Heavy machinery operating in cold climates.

5. Welding Process & Parameters

• Process: Gas Metal Arc Welding (GMAW/MIG).
• Shielding Gas: Typically Argon-CO₂ mixtures (e.g., 75% Ar + 25% CO₂) for balanced penetration and arc stability.
• Optimal Conditions:
✔Voltage: 24–30V (adjust based on material thickness).
✔Wire Feed Speed: Align with AWS guidelines for consistent deposition.

6. Advantages

• AWS-Certified Quality: Rigorously tested for chemical composition, tensile strength, and impact toughness.
• User-Friendly: Minimal post-weld cleanup due to low spatter.
• Versatility: Suitable for out-of-position welding (e.g.,vertical, overhead) with proper technique.

7. Compliance & Certifications

• Meets ASME Section IX, API 1104, and other codes for critical infrastructure.
• Compatible with ISO 14341-A G 69 6 M21Ni2 (international equivalent).

Summary