International_standard ISO 14175

EN-ISO_4Seiter_e_RZ:MGG Br Grieson L3

14.08.2009

15:41 Uhr

Seite 1

Changes have been made to the group classifications, the mix accuracy, the permissible humidity and the names of the main groups. Main groups In the main groups the changes only affect the forming gases and special gases.

The groups have been renamed “N” and ”Z“. The group Oxygen “O” has been added.

as DIN EN 439

as DIN EN ISO 14175

inert gases and inert mixed gases oxidising, argon-based mixed gases containing oxygen and/or carbon dioxide stronger oxidising gases and mixed gases reducing mixed gases low reactive gas or reducing mixed gases

I

I

M1, M2, M3

M1, M2, M3

C R

C R

F

N O

Gases, which in terms of their composition are not listed in Table 2, are designated as special gases and are denoted by the letter “S”

S

Z

inert gases and inert mixed gases oxidising mixed gases with oxygen and/or carbon dioxide stronger oxidising gases and mixed gases reducing mixed gases low reactive gas or reducing mixed gas with nitrogen Oxygen Mixed gases with components not included in Table 2 or mixed gases, whose composition lies outside of the area of Table 2.

Note: oxygen and special gases are not included as main groups in EN 439.

Humidity and Purity The maximum permitted humidity of the gas groups “O” and “C” has changed. Already for many years

the purities used in practice have exceeded the standard by a long way.

as DIN EN 439 Humidity (ppm) Dew point (°C) max. at 0,101 Mpa 40 -50 40 -50 80 -44 120 -40 200 -35 40 -50 40 -50 200 -35 40 -50

as DIN EN ISO 14175

Purity (%) min. 99,99 99,7 99,7 99,7 99,7 99,95 99,5 99,5 99,5

Main group EN 439 I M1 M2 M3 C R F Oxygen Hydrogen

Main group ISO 14175 I M1 M2 M3 Ca R N O

Purity (%) min. 99,99 99,9 99,9 99,9 99,8 99,95 99,9 99,5

Dew point (°C) Humidity (ppm) at 0,101 Mpa max -50 40 -50 40 -44 80 -40 120 -40 120 -50 40 -50 40 -50 40

Note: for certain applications a greater purity and / or a lower dew point could be recommendable in order to avoid possible oxidation and contamination.

Tolerances of mixtures In regard to accuracy of mix no definition is made for additions < 1 %.

For additions over 1% nothing has changed.

as DIN EN 439 Comment

as DIN EN ISO 14175

Additive

Accuracyy

Accuracyy

0% to 5% > 5% to 50%

± 0,5% absolute ±10% from target

± 0,5% absolute ±10% from target

Additive < 1% 1% to 5% > 5%

Comment Not defined in ISO 14175

Messer Group GmbH · Gahlingspfad 31 · D-47803 Krefeld Phone +49 2151 7811-0 · Fax +49 2151 7811-503 [email protected] · www.messergroup.com

Gases for Welding & Cutting Introduction of the international standard

EN-ISO_4Seiter_e_RZ:MGG Br Grieson L3

14.08.2009

15:41 Uhr

Seite 3

Classification of process gases The standardisation of gases for fusion welding and allied processes is uniform throughout the world under the International DIN EN ISO 14175. Until now these gases have been standardised

under DIN EN 439. The following comparison table shows at a glance the allocation of products from the Messer range of gases and informs you of the corresponding designation.

as DIN EN 439 low reactive N2

Components in percentage by volume reducing inert oxidising H2

He

Ar

O2

Designation Sub Main group group

balance balance2)

>0 to 5

balance2) balance2) balance2)

>0 bis 3 >0 bis 3

balance2) balance2) balance2) balance2)

>3 to 10 >3 to 10 >0 to 8

balance2)

Our products

Our products

Designation as ISO 14175

Designation Main Sub group group

2

>0 to 5

3 4

>5 to 25

1

>25 to 50

balance2) >10 to 15

2 3 4

Welding argon 4.6 Argon 4.8 Helium 4.6 Alumix He 30/50/70/90 Inoxmix He30 H2 C Inoxmix C2 Inoxmix He15 C2 Inoxmix X2 Inoxmix C3 X1 Ferromix C8 Ferromix He20 C8 Ferromix C18/C25 Ferromix X4/X8 Ferromix C5 X5 Ferromix C6 X1 Ferromix C12 X2 Ferromix C15 X5

I1

I

2 3 1

>0 to 5

>0 to 5 >5 to 25

I2 I3 M11 (1) M12 M12 (1) M13 M14 M21 M21 (1) M21 M22 M23 M24

M1

M2

Welding argon 4.6 Argon 4.8 Helium 4.6 Alumix He 30/50/70/90

I2 I3-ArHe-30 (50/70/90)

Inoxmix C2 Inoxmix He15 C2 Inoxmix X2 Inoxmix C3 X1 Ferromix C8 Ferromix He20 C8 Ferromix C18/C25 Ferromix X4/X8 Ferromix C5 X5 Ferromix C6 X1 Ferromix C12 X2 Ferromix C15 X5

M12-ArC-2 M12-ArHeC-15/2 M13-ArO-2 M14-ArCO-3/1 M20-ArC-8 M20-ArHeC-20/8 M21-ArC-18 (25) M22-ArO-4 (8) M23-ArCO-5/5 M24-ArCO-6/1 M24-ArCO-12/2 M25-ArCO-15/5

I1

>0 to 30 >0 to 5 >15 to 35 100

balance2) balance2)

3

M1

M2

100 Rest

1 2 1 2 1

M3

C R

C1

Carbonic acid

Carbonic acid

C1

R1

Inoxmix H2/5/7

Inoxmix H2/5/7

R1-ArH-2 (5/7)

>0 to 50

C R

F

N Inoxmix N1/N2 Inoxmix He15 N1

Rest

I

1 2

>5 to 50

2

F2

N2-ArN-1,25 (2,5) N2-ArHeN-15/1,25

Forming gas (5/8/12/…)

Forming gas (5/8/12/…)

N5-NH-5 (8/12/…)

Alumix N Alumix He15 N Alumix He30 N Alumix He50 N

Alumix N Alumix He15 N Alumix He30 N Alumix He50 N Inoxmix He30 H2 C

Z-ArN-0,015 Z-ArHeN-15/0,015 Z-ArHeN-30/0,015 Z-ArHeN-50/0,015 Z-ArHeHC-30/2/0,12

Inoxmix He15 H2 N

Z-ArHeHN-15/2/0,015

O

S

S S S S

I1 I3 I3 I3

+ + + +

0,015 0,015 0,015 0,015

N2 N2 N2 N2

S I1 + 1,25(2,5) N2 S I3 + 1,25 N2 S I3 + 0,015 N2

1) If components not included in the table are added, the mixed gas is designated as special gas with the letter “S”. Section 4 DIN EN 439 gives details. 2) Argon can be replaced by helium by up to 95%. The helium part is shown by an additional reference number in acc. with Table 3, see Section 4 DIN EN 439.

Inoxmix N1/N2 Inoxmix He15 N1 Inoxmix He15 H2 N

Components in percentage by volume inert reducing O2

1

M3 balance2) >8 to 15

oxidising CO2

1

balance2)

>0 to 5

Designation as EN 439

CO2

100 100

as DIN EN ISO 14175

Z

Ar

He

H2

low reactive N2

100

2 3 1

100 0,5 ≤ CO2 ≤ 5

balancea)

2

0,5 ≤ CO2 ≤ 5

balancea)

3 4

0,5 ≤ O2 ≤ 3 0,5 ≤ CO2 ≤ 5 0,5 ≤ O2 ≤ 3

0

5 < CO2 ≤ 15

balancea)

1 2 3

15 < CO2 ≤ 25

balancea)

4 5 6 7 1 2 3 4 5 1 2 1 2 1

5 < CO2 ≤ 15 5 < CO2 ≤ 15 15 < CO2 ≤ 25 15 < CO2 ≤ 25 25 < CO2 ≤ 50

balance 0,5 ≤ He ≤ 95

0,5 ≤ H2 ≤ 5

3 < O2 ≤ 10 balancea) 0,5 ≤ CO2 ≤ 5 3 < O2 ≤ 10 balancea) 0,5 ≤ O2 ≤ 3 3 < O2 ≤ 10 0,5 ≤ O2 ≤ 3 3 < O2 ≤ 10

balancea) balancea) balancea) balancea) balancea)

10 < O2 ≤ 15 balancea) 25 < CO2 ≤ 50 2 < O2 ≤ 10 balancea) 5 < CO2 ≤ 25 10 < O2 ≤ 15 balancea) 25 < CO2 ≤ 50 10 < O2 ≤ 15 balancea) 100 Rest 0,5 ≤ O2 ≤ 30 balancea) balancea)

0,5 ≤ H2 ≤ 15 15 ≤ H2 ≤ 50 100

2

balancea)

0,5 ≤ N2 ≤ 5

3 4 5 1

balancea)

5 < N2 ≤ 50 0,5 ≤ H2 ≤ 10 0,5 ≤ N2 ≤ 5 0,5 ≤ H2 ≤ 50 balance

balancea)

100

Mixed gases with components not includes in the table or mixed gases with a composition outside of the given areas. b)

a) For this classification, argon may be replaced in whole or in part by helium. b) Two mixed gases with the same Z classification may not replace each other. Alumix is marketed in Germany without nitrogen additive.

EN-ISO_4Seiter_e_RZ:MGG Br Grieson L3

14.08.2009

15:41 Uhr

Seite 1

Changes have been made to the group classifications, the mix accuracy, the permissible humidity and the names of the main groups. Main groups In the main groups the changes only affect the forming gases and special gases.

The groups have been renamed “N” and ”Z“. The group Oxygen “O” has been added.

as DIN EN 439

as DIN EN ISO 14175

inert gases and inert mixed gases oxidising, argon-based mixed gases containing oxygen and/or carbon dioxide stronger oxidising gases and mixed gases reducing mixed gases low reactive gas or reducing mixed gases

I

I

M1, M2, M3

M1, M2, M3

C R

C R

F

N O

Gases, which in terms of their composition are not listed in Table 2, are designated as special gases and are denoted by the letter “S”

S

Z

inert gases and inert mixed gases oxidising mixed gases with oxygen and/or carbon dioxide stronger oxidising gases and mixed gases reducing mixed gases low reactive gas or reducing mixed gas with nitrogen Oxygen Mixed gases with components not included in Table 2 or mixed gases, whose composition lies outside of the area of Table 2.

Note: oxygen and special gases are not included as main groups in EN 439.

Humidity and Purity The maximum permitted humidity of the gas groups “O” and “C” has changed. Already for many years

the purities used in practice have exceeded the standard by a long way.

as DIN EN 439 Humidity (ppm) Dew point (°C) max. at 0,101 Mpa 40 -50 40 -50 80 -44 120 -40 200 -35 40 -50 40 -50 200 -35 40 -50

as DIN EN ISO 14175

Purity (%) min. 99,99 99,7 99,7 99,7 99,7 99,95 99,5 99,5 99,5

Main group EN 439 I M1 M2 M3 C R F Oxygen Hydrogen

Main group ISO 14175 I M1 M2 M3 Ca R N O

Purity (%) min. 99,99 99,9 99,9 99,9 99,8 99,95 99,9 99,5

Dew point (°C) Humidity (ppm) at 0,101 Mpa max -50 40 -50 40 -44 80 -40 120 -40 120 -50 40 -50 40 -50 40

Note: for certain applications a greater purity and / or a lower dew point could be recommendable in order to avoid possible oxidation and contamination.

Tolerances of mixtures In regard to accuracy of mix no definition is made for additions < 1 %.

For additions over 1% nothing has changed.

as DIN EN 439 Comment

as DIN EN ISO 14175

Additive

Accuracyy

Accuracyy

0% to 5% > 5% to 50%

± 0,5% absolute ±10% from target

± 0,5% absolute ±10% from target

Additive < 1% 1% to 5% > 5%

Comment Not defined in ISO 14175

Messer Group GmbH · Gahlingspfad 31 · D-47803 Krefeld Phone +49 2151 7811-0 · Fax +49 2151 7811-503 [email protected] · www.messergroup.com

Gases for Welding & Cutting Introduction of the international standard