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Hot Corrosion Resistance

Hot Corrosion Burner Rig

Hot Corrosion Resistance at 1650°F (900°C)

Alloy 5 ppm Salt, 200 Hours 50 ppm Salt, 200 Hours 5 ppm Salt, 1000 Hours
Metal Loss Average Metal Affected Metal Loss Average Metal Affected Metal Loss Average Metal Affected
mils μm mils μm mils μm mils μm mils μm mils μm
MULTIMET® 1.8 46 3.7 94 1.8 46 4.2 107 1.8 46 5.4 137
556® 0.9 23 2.7 69 1.1 28 2.6 66 1.6 41 5.9 150

Hot corrosion tests were conducted in a low velocity burner rig burning No. 2 Fuel oil with 0.4 percent sulfur. The air:fuel ratio was 30:1. Artificial sea water was injected at a rate equivalent to the salt concentration noted in the table. Tests were run for 1000 hours, with samples cycled out of the gas stream once an hour and cooled to near ambient temperature. Gas velocity was 13 ft./ sec. (4 m/s).

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