Issue link: http://read.dmtmag.com/i/30009
Praxair Plate Cutting Gases Ask Praxair to help you lower your cost of operations and increase productivity. Praxair’s StarFlame C cutting fuel burns hotter than other fuel gases so it cuts quicker. Gas Flame temperature in oxygen (°F) BTU’s per pound Gross heating values (BTU’s per cu. ft.) Primary heat (BTU’s per cu. ft.) Secondary heat (BTU’s per cu. ft.) Theoretical oxygen ratio by volume Torch oxygen ratio by volume Cu. ft. per pound of gas (or liquid) Weight compared to air Liquid wt. per gallon (lbs.) Boiling point (°F) Vapor pressure at 70°F (psi) Limits of flammability in Air (%) Toxicity Reactivity Backfire tendency Maximum pressure (psi) Shock sensitivity StarFlame C 5800* 24812* 2810* 284 2526* 3:1 2:1 8.83 1.50 4.24 -43.6 125 2.3–9.4 Low Low Low Cylinder Stable Acetylene Propylene MAPP 5720 5240 21315 1470 507 963 2.5:1 1.1:1 14.50 0.91 – -81.0 – 2.5–81.0 Low High 15 Unstable 21078 2371 433 1938 4.5:1 2.6.1 8.89 1.45 4.35 -47.0 130 2.4–10.3 Low Copper & Low Silver Alloys Slight 5340 21240 2400 517 1889 4:1 2.5:1 8.85 1.48 4.77 Propane Natural Gas 5130 5040 22093 2563 255 2243 5:1 3.5:1 8.62 1.55 4.23 -54 to -10 -44.0 94 120 3.4–10.8 Moderate Moderate 2.2–9.6 Low Copper & Low Silver Alloys Low Cylinder Cylinder Cylinder Stable Unstable Stable Vaporization Rates *Effective flame and heating value characteristics based on computer image testing and comparison with other gas. 23600 1000 11 989 2:1 1.5:1 23.6 0.62 – -250.0 – 5.3–14.0 Low Low Low Supply Stable