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Ultra FluxA(R)
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
Designed for silver solder work, this paste flux is intended to support clean application and controlled flow when using solders such as Silvaloy 355.
$23.96
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SKU: 080538050
Overview
Designed for silver solder work, this paste flux is intended to support clean application and controlled flow when using solders such as Silvaloy 355. Its creamy consistency makes it easy to brush on, while the formula is described as resisting drying and caking during use. It is rated for temperatures up to 1600°F on all metals except aluminum, magnesium, and titanium, making it a practical choice for shop tasks where dependable flux coverage matters. The product meets Fed. Spec OF499, Type-B, and AMS 3410.
AI Recommendation
Designed for silver solder work, this paste flux is intended to support clean application and controlled flow when using solders such as Silvaloy 355.
Why Hunters Choose the Brownells
Use Silver
Solders like Silvaloy 355
Helps Protect
Work piece during soldering
Improves Solder
Flow characteristics for cleaner application
Creamy Texture
Applies easily with a brush
Resists Drying
Caking during use
Key Features
- Designed specifically for use with silver solders like Silvaloy 355.
- Helps protect the work piece during soldering.
- Improves the flow characteristics of solder.
- Creamy texture applies easily with a brush.
- Resists drying and caking during use.
- Works up to 1600°F on all metals except aluminum, magnesium, and titanium.
- Meets Fed. Spec OF499, Type-B, and AMS 3410.
Best Used For
- Hunters and gunsmiths using silver solder for shop repairs and assembly work
- Users needing a brush-applied flux that stays workable without drying or caking
- Metalworking tasks on compatible metals below 1600°F, excluding aluminum, magnesium, and titanium
- Shop users following federal-spec or AMS-listed flux requirements for silver soldering
Specifications
| Meets Fed Spec Of499 Type B Ams 3410 | Meets Fed. Spec OF499, Type-B, AMS 3410 |
|---|
Pros
- Designed specifically for use with silver solders like Silvaloy 355.
- Helps protect the work piece during soldering.
- Improves solder flow characteristics for cleaner application.
- Creamy texture applies easily with a brush.
- Resists drying and caking during use.
- Works up to 1600°F on most metals except aluminum, magnesium, and titanium.
Considerations & Trade-offs
- Designed specifically for silver solders such as Silvaloy 355, so it is not a general-purpose flux for every soldering job.
- Rated for use up to 1600°F, which may limit it for applications that exceed that temperature.
- Not intended for use on aluminum, magnesium, or titanium.
- The creamy brush-on formula is convenient, but it is a paste-style flux that requires application during the work process.
Suggested Comparisons
- Silver solder fluxes
- Silver soldering supplies
- Metal joining fluxes
- High-temperature brazing accessories
Suggested Accessories
- Brush applicator
- Heat-resistant gloves
- Soldering torch
- Cleaning cloth
Frequently Asked Questions
What is Ultra FluxA(R) designed for?
It is designed specifically for use with silver solders like Silvaloy 355.
What does this flux do during soldering?
According to the product description, it protects the work piece and improves the flow characteristics of solder.
How is the flux applied?
The description says it has a creamy texture that applies easily with a brush.
What temperature can it work up to?
It is listed as working up to 1600°F.
Are there any metals it should not be used on?
Yes. The description says it works on all metals except aluminum, magnesium, and titanium.