80/20 Argon CO₂, 75/25 Welding Gas, MAG Welding Gas, Carbon Steel Welding Gas.
Precision Ar CO₂ Mixed Gas, China Welding Gas Supplier, MSDS Certified Shielding Gas, COA Approved Ar CO₂ Blend, Automated Welding Mixed Gas
Argon Carbon Dioxide (Ar-CO₂) Mixed Gas | Welding & Industrial Grade Supplier
Supplier: Wenzhou Yingyue New Materials Co., Ltd.
Argon-CO₂ mixed gas is the most widely used active shielding gas for MAG welding. Yingyue provides full-series custom blends with ±0.5% precision ratio control. Made from high-purity raw gases, our mixtures feature stable arc performance and low spatter. All batches come with standard COA and MSDS, supporting global export packaging.
Parameter | Details |
Product Name | Argon Carbon Dioxide Mixed Gas, Welding Shielding Gas, Ar-CO₂ Blend |
Chemical Components | Argon (Ar) + Carbon Dioxide (CO₂) |
CAS Numbers | Ar: 7440-37-1; CO₂: 124-38-9 |
EINECS Numbers | Ar: 231-147-3; CO₂: 204-696-9 |
UN Number | UN 1956 |
Hazard Class | 2.2 Non-flammable Compressed Gas |
Standard Ratios | 80%Ar+20%CO₂ (C20), 75%Ar+25%CO₂ (C25), 90%Ar+10%CO₂ (C10) |
Custom Ratios | 95%Ar+5%CO₂, 98%Ar+2%CO₂ (stainless steel grade) |
Ratio Accuracy | ±0.5% (strictly controlled per GB/T 39255-2020) |
Appearance | Colorless, odorless compressed gas |
Standard Filling | 40L/47L steel cylinder, 13.5±0.5MPa pressure |
Standard Valve | QF-2 (CGA580 customizable) |
Purity Grade & Impurity Control
All mixtures are strictly manufactured in accordance with GB/T 39255-2020 national standard, using high-purity raw gases (Ar ≥99.999%, CO₂ ≥99.995%) with rigorous batch testing:
1. General Welding Grade (Standard Ratios)
The mainstream grade for carbon steel and low alloy steel welding. Controlled impurities: Moisture ≤20ppm, Oxygen ≤30ppm, Total Hydrocarbons ≤10ppm. Ensures stable arc, moderate spatter and good weld formation, suitable for most manual and semi-automatic welding operations.
For automated welding lines and high-quality appearance requirements. Impurity control: Moisture ≤10ppm, Oxygen ≤15ppm, Total Hydrocarbons ≤5ppm. Features extremely low spatter rate, smooth weld surface and minimal post-weld cleaning, ideal for automotive and appliance manufacturing.
3. Special Material Grade (98%Ar+2%CO₂)
Designed for stainless steel and high-strength steel welding. Ultra-low CO₂ content prevents intergranular corrosion and maintains excellent weld toughness. Strictly controlled trace impurities ensure the mechanical and corrosion resistance properties of the weld joint.
Physical & Chemical Properties
Argon-CO₂ mixed gas combines the advantages of both components: argon provides excellent arc stability and low spatter, while carbon dioxide increases penetration depth and improves weld pool fluidity. Compared to pure CO₂, it significantly reduces spatter and improves weld appearance; compared to pure argon, it offers better penetration and lower cost.
The mixture is non-flammable, non-toxic and chemically stable under normal conditions. It is slightly heavier than air and may accumulate in low-lying areas, causing oxygen displacement and asphyxiation hazards in enclosed spaces.
Packaging & Transportation Solution
We offer standardized global packaging solutions for Ar-CO₂ mixed gas, supporting both small trial orders and large-scale bulk supply:
• Global Standard Cylinders: 4L, 10L, 40L, 47L seamless steel cylinders with QF-2 valves. DOT and ISO certified cylinders available for European, American and Southeast Asian markets.
• Bundle Packaging: 6-cylinder and 12-cylinder bundles for convenient transportation and on-site use, suitable for large construction sites and factories.
• Bulk Transportation: ISO tank containers and dedicated gas trucks for bulk delivery, providing continuous supply for industrial parks and large manufacturing bases.
• Customization: Special valve configurations (CGA580, BS341) and cylinder colors available upon request.
Ar-CO₂ mixed gas is the most versatile and cost-effective shielding gas for metal fabrication:
1. General Manufacturing: MIG/MAG welding of carbon steel and low alloy steel for machinery, equipment and structural components
2. Automotive Industry: Body panel welding, chassis assembly and battery tray manufacturing, especially for automated robotic welding lines
3. Shipbuilding & Offshore: Hull structure welding, pipe installation and heavy equipment fabrication
4. Construction & Steel Structure: Bridge construction, building steel structure and pressure vessel manufacturing
5. Stainless Steel Welding: Low-CO₂ blends (2-5% CO₂) for stainless steel fabrication requiring corrosion resistance
6. Sheet Metal Processing: Thin plate welding with low heat input to prevent burn-through and distortion
✅ Precision Ratio Control: ±0.5% accuracy guaranteed, consistent performance across all batches
✅ Full Ratio Coverage: All standard and custom ratios available to meet different welding requirements
✅ Low Impurity Content: Ultra-low moisture and oxygen levels to prevent weld porosity and defects
✅ Excellent Welding Performance: Stable arc, low spatter, good penetration and beautiful weld formation
✅ Cost-Effective: Balances performance and cost, reducing overall welding production costs
✅ Complete Export Documents: Each batch provided with COA, MSDS and all necessary customs clearance documents
✅ Stable Supply Capacity: Factory direct supply with sufficient inventory to meet bulk order demands
All Ar-CO₂ mixed gas products comply with UN1956 international transportation standards and GB/T 39255-2020 national specifications. We provide comprehensive export documentation including MSDS safety data sheet, batch COA quality certificate and certificate of origin.
Safety Notes: The gas is stored under high pressure; cylinders may explode if heated. Keep away from heat sources and direct sunlight. Use in well-ventilated areas to prevent asphyxiation. Secure cylinders properly during storage and transportation.
Company Name: WENZHOU YINGYUE NEW MATERIALS CO., LTD
Official Website: www.yycheme.com
Email: info@yycheme.com
WENZHOU YINGYUE NEW MATERIALS CO., LTD is a professional Chinese manufacturer and exporter of industrial gases, mixed gases and fine chemical products. With advanced gas mixing equipment and strict quality management systems, we provide reliable one-stop procurement solutions for customers worldwide.

Contact: Jiang.S
Phone: +86-19304758719
E-mail: info@yycheme.com
Whatsapp:+86-18966258719
Add: Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province, 325604, China