
24-9574-6403 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $77.43 | Condition is New, Kester 24-9574-6403 Solder Wire, Water Soluble, Lead Free, K100LD, 3.3%, 0.031',, FREE SHIPPING | 99.8% |
![]() | $80.00 | Condition is New, Kester Lead-Free Silver-Free Solder 24-9574-6403/K100LD/#331-Water-Soluble/ .031, FREE SHIPPING | 99.7% |
![]() | $75.10 | Condition is New, Kester 24-9574-6403 Wire Water Soluble Spool K100LD 227C, shipping cost = $12.99 | 99.9% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $57.03 | Condition is New – Open box, 24-9574-6403 - KESTER - K100LD SOLDER 3.3% / 331 (0.031"), shipping cost = $12.95 | 99.8% |

Introducing the Kester 24-9574-6403 solder wire, a high-performance, water soluble lead product with a Sn99.3 solder composition. This solder wire is specifically designed for use in lead-free soldering applications, making it an ideal choice for manufacturers and electronics hobbyists transitioning to lead-free soldering processes.
The Kester 24-9574-6403 solder wire is characterized by its water soluble flux core. This flux provides excellent wetting and formability, ensuring reliable and strong joints during the soldering process. The water soluble flux also simplifies the soldering process by eliminating the need for flux removal after soldering. Instead, the flux can be easily cleaned away using water, making the process more efficient and environmentally friendly.
The Sn99.3 solder composition of this wire provides superior electrical conductivity and thermal properties. The high tin content of the solder ensures excellent corrosion resistance and reduces the risk of cold solder joints. Additionally, the Sn99.3 solder composition is RoHS compliant, making it suitable for use in a wide range of electronic applications.
The Kester 24-9574-6403 solder wire is available in various diameters, including 0.8mm, 1.0mm, and 1.6mm, to accommodate different soldering requirements. Each spool contains 1 lb (454g) of solder wire and is packed in a protective, moisture-resistant, and resealable plastic bag to ensure the longest possible shelf life.
In summary, the Kester 24-9574-6403 solder wire is a versatile and high-performance lead-free soldering solution. Its water soluble flux core simplifies the soldering process, while its Sn99.3 solder composition ensures reliable joint formation with excellent electrical conductivity and thermal properties. Available in various diameters and packed in protective bags, this solder wire is an essential tool for any electronics manufacturing or hobbyist's toolkit.
Pros and Cons of Buying Kester 24-9574-6403 Solder Wire (SN99.3, Water Soluble Lead)
1. Pros:a. Water Soluble: The water-soluble flux core makes cleaning up after soldering much easier, as the flux residues can be simply washed away with water.
b. High-Purity Solder: With a minimum tin content of 99.3%, this solder wire offers excellent wetting properties and reduces the risk of cold joints.
c. Suitable for Sensitive Applications: Its low halide content and rosin-free formula make it a suitable choice for use in sensitive electronic applications.
d. Good Wettability: The solder wire's ability to wet various metals effectively contributes to reliable and strong joints.
2. Cons:a. Price: Compared to lead-free solders, this type of solder wire tends to be more expensive due to its composition and water-soluble flux.
b. Higher Melting Point: The alloy's higher melting point (around 368 F or 186.7 C) may require more power in soldering applications.
c. Limited Shelf Life: Water-soluble flux can absorb moisture from the environment, which may lead to reduced shelf life and potential performance issues.
Conclusion:The Kester 24-9574-6403 solder wire offers several advantages, such as its high-purity composition, water-soluble flux core, and suitability for sensitive applications. However, it also comes with some disadvantages, including its higher cost, higher melting point, and limited shelf life.
Ultimately, the decision to buy this solder wire depends on your specific requirements, budget, and the nature of your projects. If you frequently work with sensitive components and require an easy-to-clean soldering process, this solder wire may be worth the investment. However, if you're looking for a more cost-effective alternative or don't need the benefits of a water-soluble flux, you might consider other types of solder wire.
Details:
Photos are greatly appreciated. Flux-cored solder wire, water-soluble, lead-free, SN99.3 k100ld, 3.3%, 0.031. Please consider troubleshooting prior to making a return request.
specifications testmultimeters:
- brand: Kester
- mpn: 24-9574-6403
- part type: Water Solder
- country/region of manufacture: United States
shipping testmultimeters:
- class: economy
- service: economy
- transit: 3-6 days
- type: fixed
offer testmultimeters:
- options: ship-to-home
- prices: $57.03–$80.00
- item condition:
- New
- New – Open box
- started: august 24, 2025
- availability: in stock
- sold #: 20
seller testmultimeters:
- # reviews: 11433
- rating: 98.9%
- city: worcester, pennsylvania
payments testmultimeters:
- wallet: apple-pay
- credit card: mastercard
- other
general testmultimeters:
- category: Business & Industrial > Test, Measurement Inspection > Detectors > Multimeters
returns testmultimeters:
- method: money back
- paid by: seller
- policy: returns accepted
- time: 30 days
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