WELDING ROD E138MO (E309 LMo) RODS 4.0MM

Product Description

The WELDING ROD E138Mo (E309LMo) 4.0MM is a chromium-nickel-molybdenum stainless-steel covered electrode designed for welding stainless steels to carbon and low-alloy steels, as well as other demanding dissimilar-metal applications. The E309LMo classification provides a low-carbon weld deposit containing chromium, nickel, and molybdenum, offering good resistance to cracking and suitability for corrosion- and heat-resistant applications.

The 4.0mm diameter is suitable for heavier fabrication, joining, cladding, and repair work. Depending on the electrode formulation, typical recommended current ranges for 4.0mm E309LMo electrodes are approximately 100–160 amps.

Pricing is based on per kilogram.

Key Benefits and Features

• E138Mo / E309LMo Classification: Designed for stainless-steel and dissimilar-metal welding applications.
• Chromium-Nickel-Molybdenum Composition: Provides a weld deposit suited to demanding corrosion- and heat-resistant applications.
• Low-Carbon Electrode: Helps provide good resistance to intergranular corrosion in suitable applications.
• Dissimilar-Metal Welding: Suitable for joining stainless steel to carbon or low-alloy steel.
• 4.0MM Diameter: Suitable for heavier welding and fabrication requirements.
• Good Crack Resistance: E309LMo electrodes are formulated with ferrite in the weld deposit to help reduce crack sensitivity.
• Versatile Applications: Suitable for joining, cladding, surfacing, and maintenance welding.
• Price Per KG: Convenient for purchasing and costing welding consumables by weight.

Essential Specifications

• Product Type: Stainless Steel Welding Rod / Covered Electrode
• Classification: E138Mo / E309LMo
• Diameter: 4.0MM
• Electrode Length: Typically 350MM, depending on manufacturer
• Weld Deposit: Cr-Ni-Mo Austenitic Stainless Steel
• Molybdenum Content: Typically 2.0–3.0%
• Welding Current: Approximately 100–160 Amps, depending on electrode specification
• Current Type: AC / DCEP, depending on electrode formulation
• Pricing Unit: Per KG

Typical Applications

• Stainless-steel fabrication
• Stainless steel to carbon-steel welding
• Stainless steel to low-alloy steel welding
• Dissimilar-metal joints
• 316L stainless-steel cladding and joining
• Buffer-layer welding
• Surfacing and repair applications
• Industrial maintenance
• Engineering and fabrication workshops

The E138Mo (E309LMo) 4.0MM STAINLESS STEEL WELDING ROD provides a dependable solution for heavier stainless-steel, dissimilar-metal, cladding, and repair applications where good weld strength, crack resistance, and corrosion performance are required.