Page 39 - Praxair Productivity Catalog

Praxair’s Plate Cutting Gases

Metal fabricators around the globe choose Praxair for
ultra-pure gases, gas blends, and specialty gases.

Praxair’s StarFlame C Cutting Fuel Burns Hotter C Cutting Fuel Burns Hotter
™ ™ ™
than Other Fuel Gases, Cuts Quicker

StarFlame C ACETYLENE PROPYLENE MAPP PROPANE NATURAL GAS
FLAME TEMPERATURE 5,800 † 5,720 5,240 5,340 5,130 5,040
IN OXYGEN (°F)
BTUS PER POUND 24,812 † 21,315 21,078 21,240 22,093 23,600
GROSS HEATING VALUES †
(BTU’S PER FT ) 2,810 1,470 2,371 2,400 2,563 1,000
3
PRIMARY HEAT 284 507 433 517 255 11
(BTU’S PER FT )
3
SECONDARY HEAT 2,526 † 963 1,938 1,889 2,243 989
(BTU’S PER FT )
3
THEORETICAL OXYGEN
RATIO BY VOLUME 3:1 2.5:1 4.5:1 4:1 5:1 2:1
TORCH OXYGEN
RATIO BY VOLUME 2:1 1.1:1 2.6.1 2.5:1 3.5:1 1.5:1
FT PER POUND 8.83 14.50 8.89 8.85 8.62 23.6
3
OF GAS (OR LIQUID)
WEIGHT COMPARED TO AIR 1.50 0.91 1.45 1.48 1.55 0.62
LIQUID WEIGHT PER GALLON (LBS) 4.24 — 4.35 4.77 4.23 —
BOILING POINT (°F) - 43.6 -81.0 -47.0 -54 to -10 -44.0 -250.0
VAPOR PRESSURE AT 70°F (PSI) 125 — 130 94 120 —
LIMITS OF FLAMMABILITY IN AIR (%) 2.3 – 9.4 2.5-81.0 2.4-10.3 3.4-10.8 2.2-9.6 5.3-14.0
TOXICITY Low Low Low Moderate Low Low
Copper & silver Copper & silver
REACTIVITY Low Low Low Low
alloys alloys
BACKFIRE TENDENCY Low High Slight Moderate Low Low
MAXIMUM PRESSURE (PSI) Cylinder 15 Cylinder Cylinder Cylinder Supply
SHOCK SENSITIVITY Stable Unstable Stable Unstable Stable Stable
*Check with your Praxair sales representative for availability. Effective fl ame and heating value characteristics based on computer image testing and comparison with other gases.
†
VAPORIZATION RATES TEMPERATURE (40% full multiply by 0.8 / 20% full multiply by 0.6)
Ft /hr at 60% Full Cylinder CYLINDER SIZE -5°F +10°F +20°F +40°F +60°F
3
StarFlame C cutting fuel is available in 25 lbs. 8 15 20 31 40
5 lbs., 25 lbs., 50 lbs., 60 lbs., 100 lbs., 60 lbs. 14 28 37 56 75
and 435 lbs. cylinders and bulk tanks
ranging from 500 to 10,000 gallons 100 lbs. 19 38 51 77 102
in capacity. 435 lbs. 42 85 114 171 288
1,000 gal. 197 324 512 759 1,142
Specifi cations subject to change without notice. Consult your Praxair representative when ordering.

1-800-225-8247 www.praxairusa.com A29