What is the correct soldering technique for the Harris 97/3 Lead-Free Acid Core Solder - 1/8 in (3.2 mm) - 1 lb Spool - 331866?

Soldering technique for copper plumbing: clean pipe and fitting surfaces with sandpaper or steel wool until bright, apply paste flux, assemble the joint, and heat the fitting (not the solder) with a torch until solder flows freely when touched to the joint. Remove heat as soon as the solder flows — overheating burns the flux and can cause a dry joint or oxidized solder. Allow to cool for 30 seconds before wiping and moving the assembly.

What diameter and quantity is the Harris 97/3 Lead-Free Acid Core Solder - 1/8 in (3.2 mm) - 1 lb Spool - 331866 available in?

The Harris 97/3 Lead-Free Acid Core Solder - 1/8 in (3.2 mm) - 1 lb Spool - 331866 is available in 1/8 diameter. Wire solder diameter selection depends on the joint size: fine wire (.050–.062 in) suits electronics and tight plumbing fittings; medium wire (.093–.125 in) is the most versatile for general plumbing work; larger diameter wire suits large-bore fittings and faster deposition.

How should I store the Harris 97/3 Lead-Free Acid Core Solder - 1/8 in (3.2 mm) - 1 lb Spool - 331866?

Store solder in a cool, dry location away from moisture and chemical fumes. Lead-free solders containing silver (Sn-Ag, Sn-Ag-Cu) are more brittle than traditional tin-lead solders and should be handled with care to avoid cracking the wire on the spool. Flux-core solder should be stored away from extreme heat to prevent flux degradation inside the core.

Harris 97/3 Lead-Free Acid Core Solder - 1/8 in (3.2 mm) - 1 lb Spool - 331866

Q: What is the Harris 97/3 Lead-Free Acid Core Solder - 1/8 in (3.2 mm) - 1 lb Spool - 331866 used for?

Lead-free solder is used for joining metal components at temperatures below 840°F (450°C) in plumbing, electronics, and light metal fabrication. Lead-free solders are required by NSF/ANSI 61 for potable water plumbing systems and are mandatory in many states — never use lead-containing solder on drinking water supply lines.

Q: Does the Harris 97/3 Lead-Free Acid Core Solder - 1/8 in (3.2 mm) - 1 lb Spool - 331866 require separate flux?

A separate flux must be applied to clean joint surfaces before soldering with wire or bar solder. Harris Bridgit Flux or a similar non-corrosive paste flux is recommended for plumbing copper joints. Apply flux to all contact surfaces, assemble the joint, then heat the base metal and touch solder to the joint — the solder flows by capillary action into the flux-wetted gap. Remove flux residue after the joint cools.

SKU: 331866

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97/3 lead-free acid core solder 1/8 in. x 1 lb. spool (25 lb Box)

Overview

97/3 lead-free acid core tin-copper solder is used for repairing holes in tin and sheet metal, repairing automotive radiators, metal gutters, non-electrical and non-plumbing applications. It has a melting temperature of 445°F. It is not recommended for use on brass or HVAC connections. It is not for use in plumbing or potable water applications. Complies with the EU Reach & RoHS directive.

Features

Melting temperature of 445°F (229°C)
Used to repair holes in tin and sheet metal, automotive radiators, metal gutters, non-electrical, and non-plumbing applications
100% environmentally safe as it is completely free of antimony or nickel
Not safe for use with plumbing and potable water system applications
Complies with the EU Reach & RoHS directive

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Q&A

Product Overview

Features

Melting temperature of 445°F (229°C)
Used to repair holes in tin and sheet metal, automotive radiators, metal gutters, non-electrical, and non-plumbing applications
100% environmentally safe as it is completely free of antimony or nickel
Not safe for use with plumbing and potable water system applications
Complies with the EU Reach & RoHS directive

Harris 97/3 Lead-Free Acid Core Solder - 1/8 in (3.2 mm) - 1 lb Spool - 331866

Product Overview

Features

Product Reviews

Questions & Answers