Industrial gas cylinder ARCAL™ R1-2

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Summary
ARCAL™ R1-2 delivers improved productivity and weld appearance for TIG welding of austenitic stainless steels. Shielding gas composition: 2.4% H2 in Argon.

Overview
ARCAL™ R1-2 is a user-friendly shielding gas specifically formulated for austenitic stainless steels. Designed for TIG welding, it reduces welding time compared with pure argon. The controlled hydrogen content stabilizes the arc and facilitates manual parameter adjustments.

Performance
ARCAL™ R1-2 produces compact, low-oxidation weld beads. Austenitic stainless steels show no susceptibility to cold cracking. The 2.4% hydrogen content increases welding speed without degrading the base material properties. The reducing effect of hydrogen enhances bead brightness and reduces passivation time.

Ease of use
ARCAL™ R1-2 is the reference shielding gas for high-quality TIG welding on thin austenitic stainless steel sections. Hydrogen increases penetration and travel speed, saving time in welding and passivation operations. Suitable for manual, automated and robotic welding. Manual welding parameters are simple to set thanks to hydrogen’s arc-stabilizing and high-temperature effects and its reducing character that limits bead oxidation. Supplied standard with SMARTOP™; optional EXELTOP™ head with integrated regulator. Packaging options from single cylinders to large-volume frames.

Applications

• TIG and plasma welding of austenitic stainless steels
• TIG braze-welding of galvanized steels
• Orbital TIG welding of austenitic stainless steels

Safety & transport (summary)
Hazards: risk of asphyxiation at high concentrations. Non-flammable.
Transport: official designation "Compressed gas". UN No.: 1956. ADR class: 2. Classification code: 1A.

Characteristics / technical specifications

• Reference: I2512
• Physical state: gaseous
• Relative density (gas): heavier than air
• Valve connection: AFNOR C (21.7 x 1.814 SI - right-hand male) EXELTOP: Quick Argon. Frame connection: 38x2 (S)
• Molecule: MIX
• Components (% vol. abs): Ar; H2 2.4% ±0.5%
• Impurities: H2O (5 bar) ≤ 40 ppm; O2 ≤ 20 ppm; N2 ≤ 80 ppm
• Additional information: Product compliant with EN ISO 14175-R1-ArH-2.4 (welding application)
• Color: colorless
• Odor: odorless