What diameter is the Harris 99 Nickel TIG GTAW Welding Rod 1/16 5# Box - NI99T30 available in, and how do I choose the right size?

The Harris 99 Nickel TIG GTAW Welding Rod 1/16 5# Box - NI99T30 is available in 1/16 diameter. Rod diameter selection depends on the base metal thickness and the amperage being used: 1/16 in (1.6 mm) rods suit light gauge up to 3/16 in at 60–130A; 3/32 in (2.4 mm) rods cover 3/16 in–1/2 in material; 1/8 in (3.2 mm) rods are used for heavier sections at 130–250A+. As a general rule, rod diameter should be close to or slightly smaller than base metal thickness.

What shielding gas should I use with the Harris 99 Nickel TIG GTAW Welding Rod 1/16 5# Box - NI99T30?

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 Harris 99 Nickel TIG GTAW Welding Rod 1/16 5# Box - NI99T30?

TIG filler rods carry an AWS classification (e.g., ER70S-2 for mild steel, ER308L for 304 stainless, ER4043 for aluminum) that specifies the chemical composition and mechanical properties of the deposited weld metal. Always verify the AWS class when writing or qualifying a Welding Procedure Specification (WPS) for code work.

Harris 99 Nickel TIG GTAW Welding Rod 1/16 5# Box - NI99T30

Q: What is the Harris 99 Nickel TIG GTAW Welding Rod 1/16 5# Box - NI99T30 used for?

Nickel-alloy TIG rod is used for welding nickel alloys, heat-resistant alloys, and dissimilar metal joints involving nickel-base materials. Common applications include high-temperature service components, chemical processing equipment, and repair of nickel alloy castings. Match the filler alloy to the base material specification — nickel filler alloys are not interchangeable across alloy families.

SKU: NI99T30

$604.70

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Harris 99 Nickel TIG GTAW Welding Rod 1/16 5# Box - NI99T30

Overview

Harris 99 Nickel TIG GTAW Welding Rod 1/16 5# Box - NI99T30

Harris® 99 is a general purpose, nickel-iron TIG (GTAW) welding alloy (AC-DC) for production, salvage and repair of all cast irons.

Features

General purpose nickel TIG (GTAW) welding rod
Produces clean, strong, ductile deposits
Yields smooth, even bead contours
70,000 psi maximum tensile strength (as welded)
80,000 psi maximum yield strength (as welded)
18% min. elongation (as welded)
AC or DC reverse or straight polarity
pre-heat heavy sections to approximately 400 degrees F (204 degrees C) for best results
Used for building-up, cladding and joining cast iron to steel

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