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97032 - Handy & Harman Handy Flux White - General Purpose Silver Brazing Paste

Packaging: 1lb jar
$25.56/jar $21.30/1lb jar only $21.30/jarSave 17%

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SKU: HF1 Categories: ,

OVERVIEW

The Industry Standard for Silver Brazing Applications

Handy & Harman Handy Flux (White) is widely recognized across the industrial sector as the standard general-purpose flux for silver brazing. Engineered to perform reliably in a broad temperature range of 1100°F to 1600°F (593°C to 871°C), this flux provides exceptional protection against oxidation during the heating cycle. Its chemical composition is specifically formulated to dissolve refractory oxides from the surface of base metals, ensuring a clean surface that promotes the flow and bonding of the filler metal.

This flux is categorized under AWS A5.31 Type FB3-A and is suitable for brazing virtually all ferrous and non-ferrous metals, including steel, stainless steel, copper, brass, bronze, and nickel alloys (excluding aluminum, magnesium, and titanium). The paste consistency is optimized for application stability; it stays in place during the initial heating phase and does not spatter or run off vertical surfaces easily. As the assembly reaches the brazing temperature, the flux becomes a clear, protective liquid that indicates the metal is ready for the filler alloy.

One of the critical advantages of Handy Flux is its ability to reduce surface tension, allowing the molten brazing alloy to flow via capillary action into tight clearances. This results in mechanically strong, leak-proof joints essential for HVAC, plumbing, and industrial fabrication. Post-braze cleaning is straightforward, as the flux residue is water-soluble and can typically be removed with hot water and mechanical agitation, eliminating the need for harsh chemical cleaners in most applications.

Key Technical Specifications

  • Active Range: 1100°F - 1600°F
  • Consistency: Smooth Paste
  • Compliance: AWS A5.31 Type FB3-A, AMS 3410
  • Base Metal Compatibility: Ferrous and Non-Ferrous (except Al/Mg/Ti)
Additional Information
Packaging Description:1lb jar
Brand:Handy & Harman
Product:Flux
AWS Classification:AWS A5.31 Type FB3-A
Color:White
----- new values below ----
Flux Type:Silver Brazing Paste
Active Temperature Range:1100°F - 1600°F (593°C - 871°C)
AWS Classification:AWS A5.31 Type FB3-A
Color:White
Form:Paste
Residue Solubility:Water-Soluble
Brand:Handy & Harman
Packaging Description:1lb jar
Product:Flux

INCLUDED

  • 1x 1 lb Jar of Handy Flux White Paste

APPLICATIONS

  • HVAC and refrigeration pipe joining
  • Plumbing and pipe fabrication
  • Jewelry manufacturing and repair
  • Automotive heat exchanger repair
  • General maintenance and repair (MRO)
  • Tool and die carbide tipping
  • Electrical contact assembly

FAQ

Handy Flux is active between 1100°F and 1600°F (593°C - 871°C). It begins to melt and dissolve oxides at 800°F and becomes fully fluid and active at 1100°F.

The residue left by Handy Flux is water-soluble. It is best removed using hot water and a stiff brush or a rag. For stubborn residue, soaking the part in hot water immediately after the flux solidifies (while the part is still warm, but not hot enough to cause thermal shock) helps dissolve it.

No, Handy Flux White is not suitable for aluminum, magnesium, or titanium. It is designed for ferrous and non-ferrous metals such as steel, stainless steel, copper, brass, bronze, and nickel alloys.

If the paste becomes too thick or dries out due to the lid being left off, it can be restored by adding a small amount of water and mixing it until it returns to a smooth paste consistency.

No, this is a flux paste only. It does not contain any filler metal or silver. It is used in conjunction with silver brazing wire or rods.

The flux itself washes away, but suitability for food applications depends primarily on the filler metal used (must be cadmium-free) and the thoroughness of the post-braze cleaning. Always consult local codes and standards for food equipment.

It meets the requirements of AWS A5.31 Type FB3-A.

This is a high-temperature brazing flux. It is generally too active and requires higher temperatures than standard soft soldering (lead/tin) applications. It is designed for silver brazing alloys.

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