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Argon

As inert atmosphere argon is indispensable for electric arc welding of aluminium and stainless steel. Argon is a colourless and odourless gas. The gas is chemically inert, non-combustible and oxygen suppressant. Argon is present in air with 1% vol.

In its capacity of protective gas, in function of the materials to be welded, it is mixed or not mixed with carbon dioxide and sometimes with small quantities of other gases such as oxygen, helium… Argon also serves as carrier gas for gas chromatography. Certain organic substances can be detected with the highly sensitive argon detection method.

Physicochemical constants

Symbol Ar
Average molecular weight (kg/mol) 39.95
Density of the gas (kg/mat 1.013 bar and 0 °C) 1.784
Relative density of the gas (air=1) 1.38
Boiling point 1 bar -185.9 °C (87.3 K)
Critical temperature t = -122.3 °C, (151 K), p = 49 bar/td>
Self-ignition temperature Not flammable

1 litre of liquid argon releases 835 litres gas at 15 °C. and 1 bar.

Application areas

Inductively Coupled Plasma (ICP)

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Protective gas when MIG welding of aluminium alloys

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Plasma gas used for plasma cutting

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Protective gas used when Gas Tungsten Arc Welding

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Delivery Forms

In gaseous form

Cylinders

Content Height Diameter Total Weight Pressure (bar) Quantity Gas
50 l ca 1.70 m 22.9 cm ca 75 kg 200 10.5 m3
45 l ca 1.55 m 22.9 cm ca 65 kg 200 9.5 m3
27 l ca 1.20 m 20.4 cm ca 45 kg 200 5.7 m3
13 l ca 1.20 m 14.0 cm ca 35 kg 200 2.5 m3
10 l ca 1.00 m 14.0 cm ca 30 kg 200 2.1 m3
5 l ca 0.55 m 13.0 cm ca 10 kg 200 1.0 m3

More information about our cylinders

Cylinder bundles

Content Length Width Height Total Weight Pressure (bar) Quantity Gas
12 bottles (45 l) 1050 800 1640 +/- 1000 kg 150 80 m3
12 bottles (45 l) 1050 800 1640 +/- 1000 kg 200 108 m3
12 bottles (50 l) 1050 800 1640 +/- 1150 kg 200 120 m3
12 bottles (50 l) 1050 800 1990 +/- 1500 kg 200 120 m3

More information about our cylinder bundles

In liquid, frozen form

  • In vacuum-insulated tanks/containers
  • In dewars
  • In tank containers

Cylinder identification

Colour (according to NBN-EN 1089):

  • het ogive is painted in dark green RAL 6001
  • the cylindrical part is painted in dark grey RAL 7031

Stop cock connection: W21,8 x 1/14” - right / external (NBN226/DIN477)

Stop cock material: brass

Identification: ISO-sticker with ADR-data and H - and P-sentences according CLP

Equipment

Piping systems are pressure and product-related and must be taken care of by competent people in observance with the current standards and legislation. Each gas with its specific purity requires suitable material.

IJsfabriek Strombeek can supply you with the appropriate material for every application such as: mufflers, flow meters, filters, valves, pressure gauges...

Specification of the quality

Form Name Ar vol. % O2 vol. ppm CnHm vol. ppm H2O vol. ppm N2 vol. ppm CO2 vol. ppm CO vol. ppm
Gaseous (compressed) 4.8 ≥ 99.998 ≤ 5 ≤ 1 ≤ 5 ≤ 5 ≤ 1 -
Gaseous (compressed) 5.0 ≥ 99.999 ≤ 2 ≤ 0.5 ≤ 3 ≤ 5 ≤ 0.5 ≤ 0.5

Safety information

See the safety information sheet (SDS) nr: 003A (gas) and B (liquid, deep frozen)