Exposure times for electrodes

Date 05-03-2002 00:53

Does anyone have the ASME or AWS standard for electrode exposure? I need to know for E7018, E8018, and E9018. I thought that I had that information and I don't. If possible, could you tell me the ref. number so I can tell my boss... Thank you all in advance

By Michael Sherman (***)

Date 05-03-2002 10:50

AWS D1.1:2000
Low Hydrogen electrodes, 5.3.2.1, 5.3.2.2, 5.3.2.3, 5.2.3.4, Table 5.1,
4 hours after opening container or removal from oven, unless they are the moisture resistant type then up to 10 hours max.

Mike Sherman
Shermans Welding

By magodley (**)

Date 05-03-2002 12:48

Note that exposure time, table 5.1, for 8018 is 2 hr. max unless they are the moisture resistant type, then over 2 to 10 max. 9018 is 1 hr max unless moisture resistant, then 1 to 5 hr.

By G.S.Crisi (****)

Date 05-06-2002 19:25

Often the exposure time is written on the eletrode box. In these cases you don't need to worry because you don't have the standards at hand.
Check if this isn't your case.
Giovanni S. Crisi
Sao Paulo - Brazil