Table 9-6.—Powdered Metal Alloys and Some of Their Uses
Powdered Metal Ahoy General Uses
BOROTEC Hardness: Abrasion-resistant nickel-base ahoy for steel, stainless, nickel-base
RC 55-62 alloys and cast irons. Corrosion resistant. Good hardness at high
10009 temperature. Low coefficient of friction. Nonmachinable.
GRITALLOY Tungsten Ahoy for a thin, rough surface that will abrade, grip, or resist.
carbide Uniformly distributed tungsten carbide grit firmly anchored in a hard,
10011 corrosion-, and heat-resistant nickel-base matric. Nonmachinable.
COBALTEC Hardness: Cobalt-base ahoy overlay for steel, stainless, cast iron, and nickel
RC 46-52 alloys. Corrosion and abrasion resistant. Holds hardness at high heat.
10091 Low coefficient of friction.
TUNGTEC Hardness: Severe abrasion-resistant ahoy overlay for steel, stainless steel, cast
RC 57-64 iron, and nickel alloys. Tungsten carbide particles held in a nickel-base
10112 matrix. Nonmachinable.
BRONZOTEC Tensile High-strength, machinable ahoy for joining steels, copper, and
Strength: high-melting copper alloys. Copper-base ahoy deposits offer good
10146 65,000 psi corrosion resistance and electrical conductivity. For fillet forming and
poor fit-up.
CUPROTEC Tensile High-strength, joining ahoy for copper and copper alloys. Copper-base
Strength: ahoy with good corrosion resistance and excellent electrical
10180 42,000 psi conductivity in joints of proper clearance.
BRONZOCHROM Hardness: Abrasion-, corrosion-, and heat-resistant nickel-base ahoy overlay for
RC 36-42 steel, nickel alloys, cast iron, and stainless. Crack-resistant deposits, for
10185 both overlaying and joining, are machinable.
STAINTEC Tensile High-strength, corrosion-resistant nickel-base ahoy for joining or
Strength: cladding steels, stainless, cast irons, and nickel alloys. Excellent
10670 70,000 psi machinability.
Hardness:
RC 80-90
tip will cause the torch to backfire; the weld deposit will the optimum bonding and wetting of the deposit with
be blown away, and the torch tip may be damaged. the surface of the workpiece.
Cooling water is circulated around the tip of the torch, These powders are contained in a bellows module
preventing reflected heat from affecting it. This torch is that locks directly into the torch. The unique bellows
often used to surface valve seats where the seat cannot action helps the flow of the powder through the torch.
be removed from the valve body. The modules are capped when not in use to prevent
contamination from moisture or foreign matter.
POWDERED METALS
Powdered metals are available to cover a wide
SETTING UP THE POWDERED
variety of applications. Table 9-6 contains some of the
METAL TORCH
different powders developed by the Eutectic Welding
Alloys Corporation. The ahoy chemistry and particle When you assemble the powdered metal torch,
size of each powder assures complete metal-melt during hand tighten the large threaded nut on the mixing
passage across the torch flame. It also makes certain of chamber onto the torch body. (Synthetic O-rings are
9-19
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