HI-FORCE 44™ SOLDER Reviews & Ratings

BROWNELLS HI-FORCE 44™ SOLDER

The Brownells Hi-Force 44 Solder is a premium silver-bearing solder designed for firearms assembly, repair, restoration, and custom gunsmithing applications. Formulated with 4% silver and 96% tin, this non-toxic alloy delivers exceptional bond strength while operating at significantly lower temperatures than many traditional silver soldering methods. Its combination of strength, ease of use, and clean flow characteristics has made it a popular choice for attaching sights, ribs, scope bases, sling swivel studs, and other firearm components.

Hi-Force 44 flows smoothly at approximately 475°F, reducing heating time and eliminating the need for complex oxy-acetylene equipment in many applications. The lower working temperature also helps minimize discoloration, distortion, and scale formation on firearm parts. In addition, the alloy resists cracking under stress and has demonstrated excellent performance in hot bluing operations, making it an excellent choice for firearm projects that require subsequent finishing.

FEATURES

Silver-bearing solder containing 4% silver and 96% tin
Non-toxic formulation
Flows smoothly at approximately 475°F
Provides 14,000 to 28,000 PSI tensile strength
Bonds steel, stainless steel, brass, nickel, and copper
Lower working temperature reduces heating time
Helps minimize black oxide formation and cleanup
Resists cracking under stress and vibration
Suitable for firearm assembly, repair, and restoration
Compatible with hot bluing operations
Recommended for use with Brownells #4 Comet Flux.

SPECS

Brand: Brownells
Product Name: Hi-Force 44 Solder
Composition: 4% Silver, 96% Tin
Type: Silver-Bearing Solder
Flow Temperature: Approximately 475°F
Tensile Strength: 14,000 to 28,000 PSI
Compatible Materials: Steel, Stainless Steel, Nickel, Brass, Copper
Wire Version
- Diameter: 1/16" (1.6mm)
Ribbon Version
- Thickness: .015"
- Width: 7/16" (11mm)

INCLUDED

Hi-Force 44 Solder Wire or Ribbon (depending on selected configuration)

CUSTOMER INSIGHTS

Gunsmiths frequently choose Hi-Force 44 when they need a stronger joint than conventional soft solder can provide without the higher temperatures associated with traditional silver brazing. Users appreciate its smooth flow characteristics, strong bond strength, and compatibility with firearm refinishing processes. Many also value the reduced cleanup requirements and the ability to achieve professional-looking solder joints without specialized equipment.

The Brownells Hi-Force 44 Solder is a high-strength 4% silver, 96% tin solder engineered for demanding gunsmithing and metalworking applications. Offering 14,000 to 28,000 PSI tensile strength, a 475°F flow temperature, and excellent compatibility with steel, stainless steel, brass, nickel, and copper, it provides a durable, professional-quality solution for firearm assembly, repair, and restoration projects.

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Reviews Summary

The HI-FORCE 44™ SOLDER receives high praise for its effectiveness in soldering with capabilities for high-temperature tasks. Users appreciate its quick melting and strong bonding, although some suggest using finer forms like wire for ease of use. Proper flux application and technique are highlighted as crucial for best results, along with minor suggestions for product width improvement.

What Reviewers Are Saying

Product Effectiveness

80%

Many reviewers commend the solder for its strong bonding capabilities and quick melting feature, enabling successful soldering on various materials, including firearms parts. Its reliability under high-temperature conditions makes it a favorite among users.

Application Technique

70%

A common theme among the reviews is the importance of proper soldering technique. Users emphasize the role of appropriate flux application and controlled heating methods to achieve successful results, making it clear that skill can significantly influence the outcome.

Ease of Use

60%

While many find the product straightforward, some reviews indicate that users who chose ribbon over wire struggled with application accuracy. Overall, it is generally considered easy to work with, especially for experienced users.

Performance with Recommended Flux

65%

Users frequently highlight the effectiveness of the recommended Comet #4 flux, noting that it plays a crucial role in successful soldering. This underscores the significance of pairing quality solder with compatible flux for optimal results.

Suggestions for Improvement

10%

Some reviewers propose potential enhancements, such as offering the solder in slightly wider options for easier handling. While this is a minor concern, it reflects a desire for improved product adaptability based on user experience.

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Easy to use

Really happy with my choice. The solder was very easy to use and made for solid joint. Would definitely recommend. Don’t forget the flux

by JAMES D. on September 24, 2026

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best solder

best solder i know of for resoldering double barrels has high enough melting piont that barrels can be hot blued after soldering if you use care.

Would you recommend this? Yes, I would recommend to a friend

by Wallace M. on September 09, 2024

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Solder

Good product fast delivery works good and easy to use

by DENNIS T. on March 22, 2024

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Sweet!

This stuff was better than expected melts very quickly so be prepared.use the flux they recommend for the materials your soldering. Appears to be very strong but I haven't done any destructive testing yet. I did a rem 700 bolt handle that was way out of time. Took more time to remove original handle and clean up the factory garbage, which had less than 50% bond. But now she's good to go. Amazing when you take ten minutes to do something right. But that's half the fun of smithing.

44 high force solder

used when making a Winchester 1894 takedown. After machining a brass plate the solder was used to sweat the brass plate to the barrel. This solder is not affected by boiling water when rust bluing.

Works as it Should

First time using the product and it worked great for me. Clean metal, degrease well, apply flux with Q tip, heat to temp, apply solder, wipe with Q tip saturated in flux to tin. Do this to each part allow them to cool some and clamp them together. Reheat and let solder flow and lock the joint together. Creates a solid union without much fuss. I would use it again or recommend it to someone else. I used the recommended Comet #4 flux by the way.

Solder Repair

Used to attatch a replacement sight on a New Model Ruger Blackhawk. Solder flowed well on the fluxed surfaces using a propane torch. Took the gun to the range and shot 200 rnds of heavy loads and the sight stayed put.

Works well

I used this to repair a broken lug on the underside of a single shot shotgun. I used a MAP torch to speed the heating but propane would have worked. It is easy to work with and holds well.

by David on September 14, 2019

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Hi-Force 44 wire

flows well at low temp

reattaching ribs

The only thing that could improve this is offering it slightly wider. I run it through the rolling mill about 1/2 the time to get it a little wider. This and the Comet flux has made this job far easier than I thought possible - sort of no sweat sweating. Be ready to snug up the jig as it flows and give the part plenty of time too cool before loosening.