What is meaning of " -1 " in electrode E7018-1
The (-1) = low temp impact
Refer ASME Sec II Part C –Specifications for Welding Rods, Electrodes,and Filler - SFA 5.1:
A “−1” designator following classification identifies an electrode which meets optional supplemental impact requirements at a lower temperature than required for the classification
Is it indicate hydrogen diffusion
No. but in E7018-1H4R,
H4 = hydrogen diffusion level 4 mL(H2)/100g.
R = meets moisture test
What is the difference between E7018 & E7018-1, only impact test or
material composition also
Refer ASME Sec II Part C –Specifications for Welding Rods, Electrodes,and Filler - SFA 5.1:
E7018-1 having an increase in the manganese content could reduce the Ductile/Brittle " transition" temperature and improve the low temperature impact values of the weld metal.
From: "george.dilintas@gr.bureauveritas.com" <george.dilintas@gr.bureauveritas.com>
To: materials-welding <materials-welding@googlegroups.com>
Sent: Sun, 7 November, 2010 9:48:55 PM
Subject: Re: [MW:8120] E7018 & E7018-1
Improved impact properties
----- Original Message -----
From: Adi [adinraos@gmail.com]
Sent: 06/11/2010 07:15 MST
To: "Materials & Welding" <materials-welding@googlegroups.com>
Subject: [MW:8112] E7018 & E7018-1
Hi everybody
What is meaning of " -1 " in electrode E7018-1
Is it indicate hydrogen diffusion
What is the difference between E7018 & E7018-1, only impact test or
material composition also
Reg
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