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METCO ^® 19E

Metco 19E is a self-fluxing nickel-chromium hardfacing alloy powder. It produces hard, dense coatings which resist wear by abrasive grains, hard surfaces, particle erosion, fretting and cavitation.

Coatings of Metco 19E are equivalent in wear and corrosion resistance to coatings of Metco 16C Self-Fluxing Powder. They are useful for nearly all hardfacing applications, especially on irregular shapes and where thick coatings are required. Coatings up to 3mm (.125") or more in thickness may be fused without difficulty.

Metco 19E Powder is sized slightly finer than Metco 16C, and has a narrower particle size distribution. This provides lower porosity in the fused and ground coatings.

As a self-fluxing alloy, Metco 19E is one of a group of Metco powders which are to be “fused” or remelted in a normal atmosphere after being sprayed. They then coalesce into a dense, essentially pore-free coating.

Typical Composition:

• Chromium 16.0%
• Silicon 4.0%
• Boron 4.0%
• Iron 4.0%
• Copper 2.4%
• Molybdenum 2.4%
• Tungsten 2.4%
• Carbon 0.5%
• Nickel Balance

Coating Properties

• Texture, as-fused (microinches aa): 200-300 (micrometers aa): 5-8
• Macrohardness: Rc55-60
• Microhardness (DPH300) 785
• Porosity (Volume, %): Essentially none
• Bonding: Metallurgical

Wear Resistance

Fused coatings of Metco 19E are equivalent in wear resistance to fused coatings of Metco 16C. Wear tests conducted using an abrasive slurry of water and aluminum oxide.

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