What diameter is the Lincoln TG55125638 Techalloy 55 TIG GTAW Welding Rod, 1/8 in, 10 lb Tube available in, and how do I choose the right size?

TIG filler rod diameter selection: match the rod diameter approximately to the base metal thickness. 1/16 in (1.6 mm) for thin sheet, 3/32 in (2.4 mm) for medium gauge, 1/8 in (3.2 mm) for heavy plate. Using a rod that is too large requires excessive heat to melt the rod and can cause overheating of thin base metal.

What shielding gas should I use with the Lincoln TG55125638 Techalloy 55 TIG GTAW Welding Rod, 1/8 in, 10 lb Tube?

TIG welding shielding gas selection: use pure argon (99.995% purity) for most TIG applications including steel, stainless, aluminum, and titanium. Helium additions (25–75% He/Ar mix) increase heat input and travel speed for heavy section work and aluminum welding where higher deposition is needed. Never use CO2 or mixed gases designed for MIG welding in TIG torches.

What is the AWS classification of the Lincoln TG55125638 Techalloy 55 TIG GTAW Welding Rod, 1/8 in, 10 lb Tube?

The Lincoln TG55125638 Techalloy 55 TIG GTAW Welding Rod, 1/8 in, 10 lb Tube carries AWS Similar to ENiFe-Cl classification, confirming it meets the American Welding Society's chemical composition and mechanical property requirements for that filler metal category. The AWS classification appears on the rod tube label and verifies the rod's chemistry for code-compliance welding procedures (WPS/PQR).

Lincoln TG55125638 Techalloy 55 TIG GTAW Welding Rod, 1/8 in, 10 lb Tube

Q: What is the Lincoln TG55125638 Techalloy 55 TIG GTAW Welding Rod, 1/8 in, 10 lb Tube used for?

TIG (GTAW) filler rods are used in the gas tungsten arc welding process, where the welder manually feeds the rod into the weld pool while maintaining the arc with the torch. TIG welding produces the highest quality, lowest spatter welds and is the process of choice for precision work on stainless, aluminum, titanium, and exotic alloys.

Q: How should I store the Lincoln TG55125638 Techalloy 55 TIG GTAW Welding Rod, 1/8 in, 10 lb Tube to maintain weld quality?

TIG filler rods are typically sold in 36 in lengths in 1 lb, 5 lb, 10 lb, and 25 lb tubes. Store rods in their original sealed tubes in a dry location. Stainless and nickel alloy rods are particularly moisture-sensitive — exposure to humidity can introduce hydrogen and cause porosity or cracking. Never leave opened rod tubes exposed to damp air.

SKU: TG55125638

$243.24 ~~$270.10~~

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TECHALLOY® 55 Tungsten Inert Gas Rod designed for welding of cast irons to other cast irons as well as for joining cast irons to mild steels and readily used for the repair of castings application.

AWS / Classification: AWS Similar to ENiFe-Cl

Overview

Lincoln TG55125638 Techalloy 55 TIG GTAW Welding Rod, 1/8 in, 10 lb Tube

TECHALLOY 55 is ideal for a preheat and inter-pass temperature of not less than 350°F (175°C) is required during welding on cast iron to minimize the potential for cracks.

Features

• The welds are moderately hard and require carbide tipped tools for machining
• A preheat and inter-pass temperature of not less than 350°F (175°C) is required during welding on cast iron to minimize the potential for cracks
• Q2 Lot certificates showing actual wire composition available online

Specifications

Feature	Value
Classification	%C%Cu%Mn%Ni%S%Si%Al%Fe
Typical Result	0.00.10.754.00.00.10.144.5
LECO Diameter	1/8 in (3.2 mm)
LECO Package	(3) 10 lb Tube
Diameter (in)	1/8
Length (in)	36

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