High-purity solid wires, flux-cored consumables, and high-performance electrodes engineered for extreme industrial requirements.
ER316LSi TIG welding wire represents the pinnacle of austenitic stainless steel joining technologies. Designed specifically for Gas Tungsten Arc Welding (GTAW / TIG), it is defined under AWS A5.9/A5.9M and EN ISO 14343-A standards. The "L" indicates an ultra-low carbon profile (≤ 0.03%), which limits the precipitation of chromium carbides at grain boundaries, dramatically mitigating the risk of intergranular corrosion in sensitized zones.
The core technological differentiation of ER316LSi lies in the "Si" parameter. With a controlled silicon range of 0.65% to 1.00% (compared to standard ER316L at ≤ 0.60%), this filler metal reduces the surface tension of the weld pool. This leads to exceptional puddle fluidity, superior wetting action, and a remarkably clean, flat weld profile. For robotic applications and manual precision fabrication, ER316LSi minimizes post-weld grinding and maximizes structural integrity.
| Element | AWS A5.9 Limit (%) | Yuxin Standard (Typical) |
|---|---|---|
| Carbon (C) | ≤ 0.03 | 0.015 |
| Chromium (Cr) | 18.0 - 20.0 | 18.45 |
| Nickel (Ni) | 11.0 - 14.0 | 11.75 |
| Molybdenum (Mo) | 2.0 - 3.0 | 2.20 |
| Silicon (Si) | 0.65 - 1.00 | 0.82 |
| Manganese (Mn) | 1.0 - 2.5 | 1.75 |
Pioneering Excellence in Welding Solutions Since 2004
Established in Wulian, Rizhao City, Shandong Province, Wulian Yuxin Hardware Equipment Co., Ltd. has grown from a locally excellent manufacturer to a globally recognized producer of premium welding consumables. With our own 15,000-square-meter production facility and advanced manufacturing equipment, we proudly maintain complete control over our production processes, ensuring consistent quality across our entire product range.
By leveraging custom metallurgy, precise mechanical drawing techniques, and sophisticated surface treatment operations, Yuxin ensures that every millimeter of filler wire behaves predictably under the arc. Our annual production capacity of 3,000 tons serves clients across five continents, offering unmatched product traceability and stability.
How Wulian Yuxin leverages modernized automation to assure dimensional precision, metallurgical consistency, and global supply stability.
Our facility runs continuous multi-stage dry and wet wire drawing lines. Using tungsten carbide dies and diamond dies, we achieve diameter tolerances within +/- 0.01mm, ensuring smooth wire feeding in automated systems.
By employing atmospheric-controlled electric annealing furnaces, we prevent surface oxidation and preserve the metallurgical structure. This yields consistent tensile strength and optimal ductility for straightness control.
To eliminate wire-drawing lubricants that cause carbon pick-up and weld porosity, every batch goes through multi-stage ultrasonic chemical cleaning, guaranteeing low residue for critical structural applications.
Pioneering tomorrow's welding engineering solutions through forward-looking research and investments.
As advanced materials evolve, the tolerance for trace elements becomes narrower. Wulian Yuxin is proactively researching ultra-low phosphorus (P ≤ 0.010%) and sulfur (S ≤ 0.005%) alloys to completely eliminate solidification cracking in high-stress, fully austenitic weld structures.
Modern manufacturing demands higher speed and longer continuous cycle times. Our future production enhancements include upgraded precision layer winding technology (PLW) designed specifically for drum-packaged TIG and MIG wires, reducing drag and minimizing robotic torch fatigue.
We are transitioning to acid-free eco-passivation surface cleaning technologies. This not only complies with strict global environmental regulations but also increases the natural shelf-life of our bare TIG cut lengths by creating an ultra-stable, chromium-rich oxide nano-barrier on the wire surface.
How our products meet stringent safety and quality requirements across multiple demanding industries.
High salinity and moisture demand filler metals with outstanding pitting corrosion resistance. The 2.2% molybdenum in Yuxin's ER316LSi provides local anti-corrosive security for offshore marine piping systems and structures.
Unsmooth weld beads inside pipes can lead to bacterial growth or chemical accumulation. The superior fluid wetting properties of our silicon-fortified ER316LSi wire guarantee smooth weld beads that resist contamination.
LNG transportation requires excellent low-temperature impact toughness. Our ER316LSi wires undergo strict sub-zero impact testing down to -196°C to ensure they will not become brittle under cryogenic conditions.
| Industry Segment | Key Performance Requirement | ER316LSi Metallurgical Advantage |
|---|---|---|
| Marine & Shipbuilding | Chloride corrosion protection | Mo content (2.0-3.0%) raises pitting resistance (PREN > 25) |
| Food & Beverage Processing | Hygiene-grade smoothness | High Si (0.65-1.0%) optimizes fluid profile, reducing bacteria traps |
| Power Generation | High-temperature creeping resistance | Low Carbon prevents sensitization and intergranular cracking |
Industrial distributors and global OEMs require flexibility in product branding, chemical configuration, and packaging dimensions. Wulian Yuxin offers fully customized OEM options matching target region regulations:
Expert solutions addressing mechanical properties, process options, and quality control.
Consistent metallurgical formulations conforming to ISO, CE, and AWS criteria for robust structural fabrications.
Yuxin
