ER308L stainless steel welding rods are the cornerstone of high-performance cryogenic and chemical storage manufacturing. The "L" stands for low carbon (typically under 0.03%), which significantly mitigates the risk of chromium carbide precipitation at grain boundaries during welding. When welding standard 18-8 stainless steel alloys (like AISI 304 or 304L), minimizing carbon content ensures that the chromium content remains evenly dispersed throughout the heat-affected zone (HAZ), avoiding intergranular corrosion.
Operating with precision-controlled chemistry allows our manufacturing unit to supply welding consumables that balance ferritic and austenitic matrix structures. This balance translates directly to a high resistance to hot cracking while securing exceptional ductility and impact toughness at extremely low temperature conditions.
| Alloy Standard | C (%) | Cr (%) | Ni (%) | Mn (%) | Si (%) | P & S (%) |
|---|---|---|---|---|---|---|
| AWS A5.9 ER308L | ≤ 0.03 | 19.5 - 22.0 | 9.0 - 11.0 | 1.0 - 2.5 | 0.30 - 0.65 | ≤ 0.03 / ≤ 0.03 |
| EN ISO 14343-A | ≤ 0.03 | 19.0 - 21.0 | 9.0 - 11.0 | 1.0 - 2.5 | 0.30 - 0.65 | ≤ 0.03 / ≤ 0.02 |
| Yuxin Factory Standard | ≤ 0.025 | 20.1 - 21.5 | 9.5 - 10.5 | 1.6 - 2.0 | 0.35 - 0.55 | ≤ 0.018 / ≤ 0.012 |
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.
Our annual production capacity of 3,000 tons allows us to reliably serve clients across five continents, with particular strength in European and Southeast Asian markets. All products meet stringent international standards, including ISO9001 and CE certifications, and undergo rigorous quality control at every production stage.
The primary reason global procurement departments choose Yuxin as their reliable partner is the deep supply chain efficiency of our manufacturing hub in Shandong Province. Directly connected to prime steel manufacturing facilities and adjacent to deep-water ports like Qingdao Port, our logistics operations ensure minimum lead times and reduced marine freight costs.
We source raw wire rods directly from the state's tier-1 eco-friendly steel giants. This raw material security ensures that our ER308L batch-to-batch chemical properties never deviate by more than ±0.05% in nickel and chromium equivalents.
By automating 85% of our high-speed wire drawing, chemical pickling, and layer spooling loops, we achieve high-efficiency margins that enable wholesale rates up to 25% lower than European or North American counterparts.
Our facility uses zero-emission closed-loop acid recycling systems. With increasing global emphasis on scope-3 carbon limits, importing from an eco-compliant vendor secures your ESG scorecard.
Our ER308L welding consumables are distributed to industrial end-users across 20 countries. They are engineered to solve specific regional, climatic, and technical welding challenges across diverse sectors:
Strict safety policies in European chemical and petrochemical systems mandate strict compliance with EN ISO 14343. Our wires provide highly clean welds with zero radiographic defect indications, ensuring they pass strict TÜV inspections.
High humidity and corrosive coastal environments demand high corrosion resistance. Yuxin's ER308L wires ensure dairy, food-processing, and brewery tanks maintain clean, bacteria-resistant joint surfaces.
Liquid gas tankers and storage terminals operate under cryogenic temperatures (-196°C). The high toughness properties of our low-carbon alloy filler metal eliminate structural embrittlement risks.
Resistant to high vibration stresses and dust erosion, our MIG solid wires and flux-cored alternatives are heavily utilized for structural weld overlays in mining equipment parts.
2004
Founded Year
15k
Sq. Meters Facility
3k
Tons Annual Capacity
30%
Stricter QC Than Standards
Our in-house research laboratory and QC department strictly inspect every production batch from incoming heat analysis to spool winding tensions. Using optical emission spectrometers (OES), we verify alloying element traces. We perform tensile tests, impact tests, and radiography test runs on standard test plates before shipping approval.
Our strategic vision includes expanding our manufacturing automation and investing in eco-friendly packaging solutions. As global supply dynamics evolve, we will keep optimizing our formulations to reduce smoke emissions and improve arc stability, helping distributors gain strong competitive advantages in their local markets.
Browse technical answers related to mechanical properties, compliance parameters, and custom factory configurations when ordering ER308L welding consumables from Wulian Yuxin.
The key difference is the carbon concentration limit. ER308L has a maximum carbon limit of 0.03%, while standard ER308 permits up to 0.08%. The lower carbon content minimizes the risk of chromium carbide precipitation in the heat-affected zone (HAZ), protecting the welded joints against intergranular corrosion in highly demanding environments.
For TIG (GTAW) welding, 100% Argon is standard to ensure clean penetration. For MIG (GMAW) welding, a gas mixture of Argon + 1-2% Oxygen or Argon + 1-2% CO2 is recommended. The addition of small oxygen/CO2 quantities stabilizes the arc, reduces spatter, and improves weld metal wet-ability without compromising corrosion resistance.
ER308L is ideal for welding 304, 304L, 308, and 321 grades. However, for AISI 316 and 316L grades, ER316L wires should be used because they contain molybdenum (Mo), which is essential to prevent pitting corrosion in chloride-rich and marine environments.
We follow standard ISO9001:2015 trace systems. Every incoming heat number is verified via OES analysis. Process parameters, such as annealing temperatures and draw-speeds, are recorded. We retain reference samples from each batch for 36 months to ensure complete quality tracking.
Our ER308L weld deposits typically exhibit a Ferrite Number between 3 and 10 FN (calculated via the WRC-1992 diagram). This trace level of ferrite is essential to prevent hot cracking during solidification, while retaining adequate impact properties.
Yes, our entire stainless steel welding range is CE certified. We provide Declaration of Performance (DoP) documents and Mill Test Certificates (MTRs) conforming to EN 10204 type 3.1 with every cargo shipment.
We offer custom OEM branding solutions, including customer logo printing on outer boxes, customizable inner plastic/cardboard spool materials, specialized wire diameters (0.8mm to 4.0mm), and customizable weight options (e.g., 5kg, 15kg spools, or 1m cut-length TIG tubes).
Standard production runs for Full Container Loads (FCL) are finished within 20 to 25 days. Our close proximity to Qingdao Port allows us to dispatch finished batches to the port terminal within 24 hours of packing inspection, minimizing port delay risks.
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