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METCO ^® 34F

Metco 34F is composed of a fine tungsten carbide-cobalt powder blended with a fine nickel-chrome self-fluxing alloy powder. It contains 50% of the tungsten carbide-cobalt.

Metco 34F was especially developed to produce thin coatings which are hard, dense, smooth and capable of taking a high finish, requiring very little grinding to clean up.

Metco 34F is equivalent to Metco 34FP in terms of coating characteristics and performance, and is lower in cost. It is recommended in preference to 34FP, except in cases where the user is required to apply 34FP because of a process specification, or some similar reason.

Metco 34F is one of several self-fluxing alloys which were designed to be “fused” or remelted in a normal atmosphere after being sprayed. They then coalesce into a dense, essentially pore-free coating.

Metco 34F produces coatings which resist wear by abrasive grains, hard surfaces, particle erosion and fretting.

Coatings of Metco 34F can be used unfused wherever the workpiece cannot tolerate fusing temperatures. No hardness tests have been made on unfused Metco 34F coatings, but it is known that they contain a high concentration of tungsten carbide particles, with a hardness of Rc75, solidly imbedded in the matrix.

Typical Composition:

• Tungsten Carbide - 12% Cobalt Aggregate 50.0%
• Nickel 33.0%
• Chromium 9.0%
• Iron 3.5%
• Silicon 2.0%
• Boron 2.0%
• Carbon 0.5%

Coating Properties

• Texture, as fused: Smooth
• Ground finish, 400 grit wheel (microinches aa): 6-8
• Porosity, %: Non-porous
• Macrohardness: Rc59-Rc62
• Bonding: Metallurgical Excellent
• Wetting: Good

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