American Solder & Flux Co., Inc.

28 Industrial Boulevard

Paoli, PA 19301-0947

Products: Galvanizing & Surface Treatment

Call Us Now 1-610-647-3575

Galvanizing Flux

AMCO 4986

Retards the formation of oxide on the surface of the zinc baths and fluxes the base metal as it passes through the top flux. The zinc coating provides protection to the iron and steel in two ways:

1) The coating shields the base metal from the atmosphere;

2) Because it is more electronegative than iron or steel, the zinc gives sacrificial protection. Even if the surface is scratched and the base metal is exposed, the zinc is slowly consumed while the base metal remains protected from corrosion.

Galvanizing Repair

AMCO 321

A fine, homogenous blend of flux and powdered metal for the repair of galvanized surfaces. Similar to Amco 322, but in powdered form for hard to reach repair areas. Contains 60% metal.

AMCO 322

A blend of inorganic flux with powdered zinc, tin, and lead alloys compressed into 5/8" sq. by 4" long sticks. Used for repair of hot dipped galvanizing surfaces. Forms a metallurgical bond with virgin metal and the galvanized surface. One box contains 3 sticks equaling one pound.

AMCO 3017

A 1/4" square by 14" long bar of tin, zinc and lead designed to deposit a protective metallic coating over ferrous metal. It is suitable for repairing galvanized surfaces damaged by rough handling or welding. For plant and field repair of galvanized surfaces.

Conforms to ASTM A780-93 4.2.1.
New York DOT approved.


AMCO 95/5

A flux and powdered metal formulation in paste form. The flux is zinc chloride-based and works to remove corrosion from the mteal surface. When the melting point of the alloy is reached, the 95/5 tin-antimony alloy melts and wets the surface to form a deposit. 75% of the product is metal. The product is suitable for Babbitt metal work.

AMCO 2151
(AMCO 5050)

A homogenous flux and solder powder formulation. It consists of zinc chloride-based flux and powdered 50/50 tin-lead alloy. The flux and alloy work synergistically to join copper-based metals such as tubes and fittings. The flux removes incipient corrosion and prepares the metal surface for wetting by the solder alloy by reducing the surface tension. It may also be used to tin and join ferrous metals. The high alloy content of 70% affords coverage of large areas or the use of less product.

AMCO 2805

Similar to AMCO 2151 but contains an optimum level of powdered 50/50 tin-lead alloy powder for tinning and joining copper-based and ferrous-based metals. It contains 40% solder powder. The formulation consists of zinc chloride-based flux which functions to remove corrosion and clean the surface before the alloy metal coats the surface.

AMCO 3440

A tinning paste mixture of zinc chloride flux and tin-lead alloy powder. It is suitable for light tinning of ferrous and copper metals.

AMCO 3440-15

A flux and solder formulation consisting of zinc chloride based flux and 40/60 tin-lead powdered alloy. It is excellent for joining copper based tubes and fittings. It may also be used for tinning and joining ferrous metals such as cold rolled steel. Contains 15% metal.

AMCO 3934

This formulation containing 70% of 63/37 tin-lead in a zinc chloride-based flux is suitable for metal work calling for tinning copper and ferrous based metals. The flux removes and cleans the corrosion products on the surface before the metal powder is tinned.

AMCO 4570

This is highly recommended for thicker solder alloy deposits as it contains 80% of 40/60 tin-lead alloy. Because of the high metal content, a thicker metal deposit can be made or less of the material can be used.

AMCO 5043

A zinc chloride-based flux formulation containing 10% of 40/60 tin-lead alloy powder. The flux acts to remove corrosion and prepares the surface for tinning.

AMCO 5094

A tinning paste consisting of mild flux composition and tin-antimony alloy powder. It is suitable for lightly tinning copper-based metal surfaces with lead-free tin coating.


A zinc chloride-based flux with 75% powdered pure tin metal powder. It is suitable for tinning applications requiring thick lead-free metal coating.

As a result of its continual product improvement, Force Industries may modify the product specifications from time to time. Please consult the product's most recent technical bulletin for the most up-to-date information.