Re: [MW:15441] SYNTHETIC & NON SYNTHETIC electrodes

Mr.Md. Bilal,

The Carbon and Alloy Steel electrodes are all having Mild Steel core wire with an extra addition of elements like, Manganese, Chromium, Nickel, Molybdenum etc., where ever required in order to meet the chemical, mechanical, impact  properties.

Similarly most of the Stainless Steel electrodes have SS(18Cr&8Ni)core wire

and additional alloy content through flux covering to meet E316(19-13-Mo), E309(25-12), E310(25-20)like requirements.

They are all grouped under non synthetic electrodes.

However certain electrodes like 18Cr-8Ni-5Mn(E18-8 Mn B45) have Mild Steel core wire

and all alloy addition comes through flux covering only and are called synthetic electrodes. They work both on AC & DC (+)

But, E 18.8 Mn B20 type electrodes will have Stainless Steel core wire to give same 18Cr-8Ni-5Mn weld deposit and are grouped under non synthetic type due to its

SS core. They work only on DC (+)

Think you understand the difference.

Sridhar.

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From: MOHAMED BILAL <bilal.mepco@gmail.com>
To: materials-welding@googlegroups.com
Sent: Monday, 1 October 2012 4:28 PM
Subject: [MW:15438] SYNTHETIC & NON SYNTHETIC electrodes

Dear experts,

   What is the difference between SYNTHETIC & NON SYNTHETIC electrodes.

Regards
W.MOHAMED BILAL

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