Description

GEMINI 309Mo is a high-performance stainless steel welding electrode developed for welding corrosion-resistant CrNiMo steels to similar materials as well as to mild steel and low alloy steel. Designed for industrial fabrication and maintenance applications, it provides stable arc performance, smooth metal transfer, and reliable weld quality.

The electrode delivers smooth bead formation with clean weld edges while minimizing spatter generation and allowing easy slag removal. Its excellent welding characteristics make it suitable for stainless steel fabrication, repair work, chemical equipment, piping systems, and heat-resisting steel applications where dependable weld integrity is required.

GEMINI 309Mo is engineered to provide strong mechanical properties and consistent performance across demanding welding environments. The product complies with AWS A5.4 E309MoL classification standards and is approved under Thai Industrial Standard (TIS) 730-2558.

Key Features

• Suitable for welding corrosion-resistant CrNiMo steels
• Can weld stainless steel to mild and low alloy steels
• Smooth bead appearance with clean weld edges
• Low spatter generation and easy slag removal
• Stable arc and reliable welding performance
• Suitable for stainless and heat-resisting steel applications

Classification

AWS A5.4 E309MoL

Approval

Thai Industrial Standard (TIS) 730-2558

Mechanical Properties

• Yield Stress: 410 N/mm²
• Tensile Strength: 590 N/mm²
• Elongation: 35%

Chemical Composition (%)

• Carbon (C): 0.02
• Chromium (Cr): 23.44
• Nickel (Ni): 12.50
• Molybdenum (Mo): 2.50

Available Diameter & Current Range