EN 439 shielding gas definition

Date 03-06-2008 18:56

Does anyone have access to EN439? I have two different definitions from different sources for M21 shielding gas. One says it is Argon with >5-25% CO2, and the other says it is Argon with 18-25% CO2.

By Lawrence (*****)

Date 03-06-2008 20:06 Edited 03-06-2008 20:14

Hey G

This is not definative but you might find it interesting
http://www.airliquide.at/loesungen/business/schweissen-schneiden/Schutzgasanwendungstabelle_424_000_309.pdf

Edit
Bingo
http://www.magmaweld.com/pls/magma/ADM_STANDARTS.download?filename=F1213016356/EN%20439-MW.pdf

By GRoberts (***)

Date 03-06-2008 22:41

Thanks Lawrence, I have a chart that looks just like the 2nd link, but have other information saying that M21 only goes from 18-25% CO2. I'm beginning to think that the 18-25% may be wrong.

By andy

Date 03-07-2008 12:11

Haven't been around for a little while - you might have answered the question by now, but EN439 says:

M2 1 CO2 is >5 to 25 Argon balance.