TOKO E81T1-K2C Flux-Cored Welding Wire
AWS A5.29 E81T1-K2C · High-Strength Low-Alloy · 1.5% Nickel · Cryogenic Toughness
TOKO E81T1-K2C is a nickel-alloyed flux-cored wire designed for single- and multi-pass welding of high-strength low-alloy steels in extreme low-temperature service. Its basic slag system ensures low hydrogen content (<4 ml/100g) and exceptional toughness down to -60°C, making it the preferred choice for offshore, shipbuilding, LNG/LPG, and arctic applications.
E81T1-K2C 12.5kg spool · Vacuum-sealed for low hydrogen
Critical Advantages
- Certified to AWS A5.29: Full compliance with international standard for HSLA steel welding.
- Exceptional Cryogenic Toughness: Guaranteed ≥27J at -60°C, ≥47J at -40°C — ideal for LNG and arctic service.
- High Strength: 560 MPa tensile strength suitable for high-stress offshore and structural components.
- 1.5% Nickel Alloy: Enhances notch toughness in sub-zero environments.
- CO₂ Gas Shielded: Optimized for 100% CO₂ (20–25 L/min) with excellent arc stability and penetration.
- All-Position Capability: Smooth performance in vertical-up, overhead, and horizontal positions.
- Low Hydrogen Design: Diffusible hydrogen ≤4 ml/100g minimizes cold cracking risk in restrained joints.
- Available Diameters: 1.2mm, 1.6mm for precise application matching.
Performance That Matters in Cryogenic Environments
Primary Applications & Industries
- Offshore platforms and subsea structures in Arctic regions
- LNG/LPG carriers, storage tanks, and cryogenic piping
- Ice-class vessels, icebreakers, and Arctic cargo ships
- High-strength steel bridges in cold climates
- Pressure vessels for low-temperature service
- Wind turbine towers in cold environments
- Mining and heavy equipment for Arctic operations
- Pipeline construction in permafrost regions
- Nuclear and thermal power plants in cold zones
Technical Specifications
Chemical Composition (Typical, Weld Metal)
| Element | Value (%) | Note |
|---|---|---|
| Carbon (C) | ≤0.15 | Controlled for toughness |
| Manganese (Mn) | 0.50 – 1.75 | Strength & deoxidation |
| Silicon (Si) | ≤0.80 | Deoxidizer |
| Sulfur (S) / Phosphorus (P) | ≤0.030 / ≤0.030 | Low impurities |
| Nickel (Ni) | 1.0 – 2.0 | Enhances cryogenic toughness |
| Chromium (Cr) | ≤0.15 | — |
| Molybdenum (Mo) | ≤0.35 | Strength contributor |
Mechanical Properties (As-Welded, 100% CO₂)
| Property | Value |
|---|---|
| Yield Strength (Rp0.2) | ≥470 MPa |
| Tensile Strength (Rm) | 550 – 690 MPa |
| Elongation (%) | ≥19.5% |
| Charpy V-notch @ -40°C | ≥47 J |
| Charpy V-notch @ -60°C | ≥27 J |
Welding Parameters (CO₂ 20-25 L/min, DC+)
| Diameter (mm) | Current (A) | Voltage (V) | Stick-out (mm) |
|---|---|---|---|
| 1.2 mm | 180 – 280 | 24 – 30 | 15 – 20 |
| 1.6 mm | 220 – 320 | 26 – 32 | 18 – 25 |
* Positions: flat, horizontal, vertical-up, overhead. Adjust parameters within range for optimal performance.
Packaging Options
| Diameter (mm) | Spool Type | Weight | Part Number |
|---|---|---|---|
| 1.2 | Metal / Plastic | 12.5 kg / 15 kg | E81T1K2C-12 |
| 1.6 | Metal Spool | 15 kg / 20 kg | E81T1K2C-16 |
Technical Documentation & Certifications
Download batch-specific material test certificates (MTC), welding procedure guidelines, and safety data sheets.