Kester 44 24-6040-0061 Leaded Solder Wire 0.062 in
- 0.062 inch wire, 1.50 mm
- Sn60/Pb40 alloy, 40 percent lead content
- 44 activated rosin flux core, ROM1 per J-STD-004
- 1 lb of wire, Yellow label rosin core
- Melting point listed at 682 F
Last refreshed Sep 28, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A leaded rosin-core solder wire for professional use, with an activated flux and a defined tin-lead alloy. The weight field is wrong, so rely on the title for the quantity.
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ASIN: B005T74XSYModel: 44Category: Solder
Overview
Kester supplies this flux-cored wire in a tin-lead alloy for professional soldering. The core carries activated rosin, and the Yellow label marks the rosin core version.
The leaded alloy and activated rosin core suit general professional soldering, and the flux is classified under a recognized soldering flux standard. The limitation is data quality: the weight field shows a tiny figure that conflicts with the one pound title, and the lead content rules it out for lead-free work.
Who it's for
Technicians and shops that run tin-lead joints and want an activated rosin core in a one pound roll get a flux with a stated classification. Anyone bound by lead-free rules should choose a different alloy.
Pros and cons
- Defined tin-lead composition
- Activated rosin flux core
- Flux classified per J-STD-004
- Professional use rating
- Weight field conflicts with title
- Storage guidance not listed
Performance notes
The rosin core releases flux ahead of the melting alloy, and the listing credits the flux with fast wetting and high mobility. The listed melting point sets the minimum iron temperature needed to flow the alloy.
Specifications
| Brand | Kester |
|---|---|
| Model | 44 |
| Dimensions & fit | |
| Wire diameter | 0.062 inches (1.50 mm) |
| Item weight | 1 lb per title |
| Capacity & performance | |
| Melting range | 682 F as listed |
| Construction & materials | |
| Material | Sn60/Pb40 tin-lead, 40 percent lead content |
| Other details | |
| Certification | ROM1 per J-STD-004 |
| Use | Professional |
| Flux type | Activated rosin core, 44 flux, Yellow label |
| Core Type | Activated Rosin Flux Core |
| Sale Unit | POUND |
Frequently asked questions
How should Kester 44 leaded solder wire be stored or handled?
The listing gives no storage or handling steps. It does state that the wire carries 40 percent lead.
Is Kester 44 solder wire lead-free?
No. The listing gives the alloy as Sn60/Pb40 with 40 percent lead content.
Is the weight really 0.01 ounces?
No. The spec table shows 0.01 ounces, but the title says 1 lb, so the weight field looks like an error.
What flux classification does it have?
ROM1 per J-STD-004, as listed in the certification field.