BIOFUEL APPLIANCE VENTING SYSTEM
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United States of America Patent
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N/A
Issued Date -
Jun 4, 2009
app pub date -
Nov 30, 2007
filing date -
Nov 30, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A venting system for a biomass burning appliance. The system includes at least one pipe element formed of a steel alloy comprising: a maximum of 0.025 weight percent of Carbon, a maximum of 1.0 weight percent of Manganese; a maximum of 0.030 weight percent of Sulfur; a maximum of 0.1.00 weight percent of Silicon; a maximum of 0.035 weight percent of Nitrogen; a range of 17.50-19.50 weight percent of Chromium; a maximum of 1.00 weight percent of Nickel; a range of 1.75-2.5 weight percent of Molybdenum; and a range of a combination of Titanium+Columbium having a minimum of percentage of 0.20+4×(C+N) and a maximum of 0.80 percent.
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