Testimonials (HGX-3®)
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Worldwide Fuel Solutions Since 1984

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On a recent field trip in the United States, several pieces of mild steel of various grades and sizes were used in a test of HGX® Fuel Gas for an owner of a welding shop with automatic and manual welding equipment. Our field sales supervisor brought his OXY/HGX cylinders into the facility for the demonstration. The shop owner was courteous, but definitely a "doubting Thomas." However, after using HGX® Fuel Gas, he commented, "Your gas provides the smoothest surface after the cut is made, with less slag and spatter than any cutting fuel I have every used, including acetylene." While he is not a large-volume user of cutting gas, he will now use HGX® Fuel Gas and pay much less than if he used acetylene for the same operations.

Compare HGX® Fuel Gas to Other Fuel Gases and Acetylene For Cutting and Brazing.

Heating Values of Fuel Gases

 

HGX Fuel Gas

Propane/LPG

Propylene

Acetylene

MPS*

Neutral Flame Temp °F

5400

4700

5342

5700

5301

Neutral Flame Temp °C

2983

2594

2950

3149

2927

Heat Emission BTU/ft.³

Primary Flame

468

255

433

507

517

Secondary Flame

2144

2243

1938

963

1889

Total BTU/ft.³

2612

2498

2371

1470

2406

Total Heat Value, BTU/lb.

21,600

21,600

21,600

21,500

21,600

Properties of Industrial Fuels

 

HGX  Fuel Gas

Propane/LPG

Propylene

Acetylene

MPS*

Safety Data

Shock Sensitivity

Stable

Stable

Stable

Unstable

Stable

Explosive Limits in Oxy. (%)

2.4 - 57

2.4 - 57

2.3 - 55

3.0 - 93

2.5 - 60

Explosive Limits in Air (%)

2.3 - 9.5

2.3 - 9.5

2.0 - 11

2.5 - 80

3.4 - 10.8

Max. Allowable Pressure

Cylinder

Cylinder

Cylinder

15 PSIG

Cylinder

Burn Velocity in Oxy ft./sec.

13.5

12.2

15

22.7

15.4

Backfire Tendency

Low

Low

Low

High

Low

Toxicity

Low

Low

Low

Low

Low

Physical Properties

Specific Gravity of Liquid

.510

.507

.522

--

.571

Lbs./Gal. Liquid

4.29

4.28

4.35

--

4.8

Ft.²/Lb. Gas

8.66

8.66

9.7

14.6

9.06

Specific Gravity of Gas

1.52

1.52

1.49

.906

1.48

Vapor Pressure, (PSIG) at 70°

120

120

135

--

97

Boiling Range Temp.  °F.

-50

-50

-54

-8.4

-36 to -4

*Methylacetylene Propadiene Stabilized also known as MAPP® Gas.

Cutting Performance Comparison of OXY/HGX Fuel Gas to OXY/ACETYLENE Fuel Gas.

ACETYLENE CUTTING

Tip Size

Metal Thickness

Press Oxygen

Press Fuel

CU.FT./HR Usage Oxygen

CU.FT./HR Usage Fuel

Speed (In/Min)

0

1/4

30

2

50

17

20

1

3/8

30

3

90

25

19

2

1/2-1

45

3

140

27

15

3

1-2

50

3

165

29

12

4

2-3

50

3

270

31

9

5

3-4

50

4

330

45

8

6

5-6

55

5

465

52

6

7

8-10

65

6

675

70

3

9

14

75

6

1220

75

3

10

15

85

6

1315

75

3

HGX FUEL GAS CUTTING

Tip Size

Metal Thickness

Press Oxygen

Press Fuel

CU.FT./HR Usage Oxygen

CU.FT./HR Usage Fuel

Speed (In/Min)

0

1/4

20-45

2

25-30

7-8

15-24

1

3/8

35-40

2

45-70

10-12

11-24

2

1/2-1

35-55

2

57-82

12

10-17

3

1-2

35-55

3

113-190

12

7-12

4

2-3

35-75

3

235-335

16

5-11

5

3-4

35-75

4

310-430

16

5-11

6

5-6

25-60

4

450

18

7-9

7

8-10

35-60

5

500

20

4-7

8

8-10

35-60

6

550

24

3-4

9

14

35-60

7

700

26

4-5

10

15

40-60

7

800

28

3-4
autowld

Automatic cutting of 4” (10 cm.) bevel cut using an OXY / HGX Fuel Gas mixture.
fincut

The completed cut. Notice the smoothness of the cut surface, the lack of slag and spatter. The piece is virtually ready for welding without further machining.

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