VARIGON® He10 delivers the ideal balance of arc stability and enhanced penetration, providing 25% higher heat input than pure argon while maintaining excellent arc control for precision TIG welding of stainless steel, aluminum, and specialized alloys.
Balanced Performance
VARIGON® He10
Ar + 10% HePrecision-engineered binary gas mixture that combines argon's excellent arc stability with helium's superior heat transfer characteristics. The 10% helium content provides optimal enhancement for medium-thickness applications without compromising arc control.
Technical Specifications
| Property | Value | Benefit |
|---|---|---|
| Argon Content | 90% | Excellent arc stability and control |
| Helium Content | 10% | Enhanced heat input and penetration |
| Thermal Conductivity | 1.6x vs pure Ar | Increased heat transfer efficiency |
| Arc Voltage | +8% vs pure Ar | Higher energy density for better fusion |
| ISO 14175 Classification | I1-ArHe-10 | International TIG welding standard |
| Ionization Potential | 17.2 eV | Stable arc ignition and maintenance |
Applications & Use Cases
Primary Applications
- Medium-thickness stainless steel TIG welding (3-15mm)
- Aluminum TIG welding requiring improved penetration
- Titanium and exotic alloy welding
- Precision fabrication where arc control is critical
- Automated TIG welding systems
- Root pass welding for pressure vessels and piping
- Repair welding of high-value components
Material Compatibility
Welding Positions
- Flat (1G/PA) - Optimal for maximum heat input benefits
- Horizontal (2G/PB) - Excellent sidewall fusion, controlled bead shape
- Vertical (3G/PF) - Enhanced penetration aids uphill progression
- Overhead (4G/PE) - Improved arc directional control
Advantages & Performance
Weld Quality Benefits
- Heat input increased 25% over pure argon while maintaining arc stability
- Penetration depth improved by 15-20% at same current settings
- Superior fusion characteristics in aluminum (better wetting angle)
- Reduced risk of incomplete fusion in medium-thickness materials
- Improved bead profile with wider, flatter shape
- Enhanced cleaning action on aluminum oxide contamination
Operational Benefits
- Travel speeds increased 10-15% due to higher heat input efficiency
- Wide current range applicability (50-300A typical)
- Excellent for both AC and DC welding processes
- Reduced distortion due to concentrated heat input
- Stable arc characteristics across varying gap conditions
- Superior performance in automated welding systems
Economic Benefits
- Increased productivity from higher travel speeds
- Reduced multi-pass requirements on medium thickness
- Lower total gas consumption per unit length welded
- Reduced electrode consumption from stable arc characteristics
- Fewer rejects from improved fusion quality
- Cost-effective alternative to higher helium content mixes
Usage Guidelines
Recommended Parameters
| Material & Thickness | Gas Flow Rate | Nozzle Size | Special Notes |
|---|---|---|---|
| Stainless 3-6mm | 8-12 L/min | #6-8 cup | DC straight polarity (DCEN) |
| Stainless 6-12mm | 12-16 L/min | #8-10 cup | Higher current density beneficial |
| Aluminum 3-8mm | 10-15 L/min | #8-10 cup | AC welding, enhanced cleaning |
| Titanium 1-6mm | 6-10 L/min | #6-8 cup | Backing gas essential, low heat input |
Setup Instructions
- Use precision regulator capable of handling helium mixtures
- Set flow rate to 10 L/min initially, adjust based on application
- Select appropriate tungsten electrode (2% lanthanated recommended)
- Use larger gas lens or cup size to accommodate helium characteristics
- Set current 10-15% higher than pure argon equivalent
- Adjust arc length for optimal helium benefits (slightly shorter gap)
- Pre-flow 3-5 seconds, post-flow 8-12 seconds minimum
Optimization Tips
- Take advantage of increased heat input by increasing travel speed
- Use gas lens for improved shielding coverage with helium
- Monitor for improved wetting - may require technique adjustment
- Maintain consistent arc length - helium sensitive to gap variations
- Consider backing gas for full penetration applications
- Wind protection important - helium lighter than air
Limitations & Considerations
Not Recommended For
- Very thin materials where heat control is critical (<2mm)
- Carbon steel welding (no significant advantage over pure argon)
- Applications requiring maximum penetration (use He30 or He50)
- Beginners learning TIG technique (more forgiving with pure argon)
- Short arc length applications (helium requires proper gap)
- Cost-sensitive applications where argon suffices
Special Considerations
- Higher cost than pure argon - use only where benefits justify expense
- Requires adjustment of welding technique from pure argon experience
- More sensitive to drafts and air currents due to helium properties
- Storage cylinders must remain upright to prevent gas separation
- May require larger nozzle sizes for equivalent coverage
- Arc ignition characteristics slightly different from pure argon
Comparison with Alternatives
VARIGON He10 vs Pure Argon
Pure Argon
When to use pure Argon: Thin materials requiring maximum arc control, beginner applications, cost-sensitive projects, or when penetration requirements are easily met.
VARIGON He10 advantage: 25% higher heat input, 15-20% deeper penetration, 10-15% faster travel speeds, and superior aluminum wetting. Ideal stepping stone to helium benefits without complexity of higher He content.
VARIGON He10 vs Higher Helium Content
| Feature | VARIGON® He10 | VARIGON® He30 | Advantage |
|---|---|---|---|
| Arc Stability | Excellent | Good | More forgiving of operator technique |
| Heat Input | +25% vs pure Ar | +50% vs pure Ar | Moderate enhancement, controlled heat |
| Cost | Moderate premium | High premium | Better value for medium-thickness applications |
| Application Range | 3-15mm optimal | 15mm+ optimal | Perfect for most common thicknesses |
| Arc Length Sensitivity | Moderate | High | More tolerant of gap variations |
Related Linde Products
Pure Argon
Standard TIG welding for thin materials
VARIGON® He30
Higher helium for thick sections
CRONIGON® He30
MAG welding with helium enhancement
FORMIER®
Backing gas for TIG root passes
Technical Support & Availability
Linde Technical Support
VARIGON He10 applications benefit from technique optimization due to helium characteristics. Our TIG welding specialists provide parameter development, torch setup optimization, and technique training. Complete application guides available for all major material combinations.
Product Availability
- Standard cylinders: 10L, 20L, 50L with precision regulators
- Medical-grade purity options for critical applications
- Bulk supply systems for high-volume TIG operations
- Global availability with consistent quality standards
- Express delivery available in major fabrication centers
- Custom blending for specific helium ratios if required
Ordering Information
Product code: VARIGON-He10-XX (XX = cylinder size). Standard availability from stock in most markets. Lead times: Same-day to 48 hours depending on location. Moderate premium pricing due to helium content - volume discounts available for regular users.