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METCO ^® 16C

Metco 16C is one of several self-fluxing alloys which was designed to be “fused” or remelted in a normal atmosphere after being sprayed. They then coalesce into a dense, essentially pore-free coating.

Metco 16C produces coatings which resist wear by abrasive grains, hard surfaces, particle erosion, fretting, and cavitation. It is useful for nearly all hard-facing applications, especially on irregular shapes, and where heavy coatings are required. Coatings up to 1/8" (3 mm) or more in thickness may be fused without difficulty.

Coatings of Metco 16C are similar in wear resistance to coatings of Metco 15E Self-Fluxing Nickel-Chromium Alloy Powder. They are easier to fuse than coatings of Metco 15E and have less tendency to crack. The fused surface of Metco 16C is not quite as smooth as that of Metco 15E. Where a very smooth as-fused surface is required, a few mils of Metco 15E can be applied over the Metco 16C before fusing.

Of all of the Metco self-fluxing alloys, Metco 16C and Metco 19E are generally the most resistant to corrosion. The Metco self-fluxing alloys were designed to be sprayed with Metco ThermoSpray equipment, and subsequently fused.

Metco 16C is certifiable as meeting U.S. Navy Specifications OS 12358, MPR 1031 and MPR 1032.

Typical Composition:

• Chromium 16.0%
• Silicon 4.0%
• Boron 4.0%
• Copper 3.0%
• Molybdenum 3.0%
• Iron 2.5%
• Carbon 0.5%
• Nickel Balance

Coating Properties

• Texture (microinches aa), as-fused: 200-300
• Finish (microinches aa), ground (60 grit wheel): Less than 10 lapped: 2-3
• Typical Macrohardness: Rc60
• Porosity: Essentially none
• Density (g/cc): 7.5
• Bonding: Metallurgical

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