Welding Gases

Acetylene  |  Air  |  Argon  |  Carbon Dioxide(C0 2)  |  Helium
Hydrogen  |  Nitrogen  |  Oxygen  |  Propane

Hydrogen
Hydrogen (H2) the lightest element, has a gaseous specific gravity of 0.0695 and a boiling point of -423 F (-252.8 C) at atmospheric pressure. It is a colorless, odorless, tasteless, flammable gas found at concentrations of about 0.0001 % in air. Hydrogen is produced by several methods, including steam/methane reforming, dissociation of ammonia, and recovery from by-product streams from chemical manufacturing and petroleum reforming. Hydrogen can be stored and transported as either a gas a cryogenic liquid.

In the welding industry, hydrogen is used as a fuel in underwater oxy-hydrogen torches, and for metal welding and brazing.  Hydrogen is widely used in petroleum refining processes such as hydrotreating, catalytic reforming, and hydro-cracking. It is used in the food industry for turning inedible grease into soaps and animal feeds. It is a raw material for innumerable chemical processes ranging from the manufacturing of high-density polyethylene and polypropylene resins to the hydrogenation of food-grade oils.   Hydrogen is also used as a reducing gas in metals processing operations. Applications in the electronics industry are found in the manufacture of silicon wafers and computer chips. Rocket engine fuel is another major use for hydrogen since weight and energy considerations are paramount to its success.

 

DOT Information

DOT Name:       Hydrogen
DOT Hazard Class:       Flammable Gas
DOT Label:       Flammable Gas
DOT ID No.:       UN1049
CAS No.:       1333-74-0
Valve Outlet:       CGA 350, LB-CGA 110/170
         
Physical State in High Pressure Cylinder:  Gas
Toxicity:       Non-toxic
Fire Potential:       Flammable
          
Boiling Point
Temperature:       -423.0 deg. F (-252.8 deg. C)
Liquid Density:       4.43 lb./ft3
Latent Heat:       95.0 BTU/lb.
         
Critical Point
Temperature:       -400.3   deg. F
Pressure:       187.51 PSIA
         
Melting Point
Temperature:       -434.8 deg. F
Pressure:       1.021 PSIA
 

Industrial Cylinders

PART NUMBER

CYLINDER SIZE

APPROX. WT OF FULL CYL
(LBS)

PRESSURE
(PSI @ 70F)

DIMENSIONS
(Height x Diameter)

HYD191

191 ft3

135

2265

51" x 9"

MANUFACTURER
WEBSITES

Hobart Welding

 

Esab Welding

 

Miller Welding

 

Welding Supplies - Havard Welding.

Welding Supplies - Havard Welding.

Welding Supplies - Havard Welding.