Classification of electrodes, Mechanical Engineering

CLASSIFICATION OF ELECTRODES

The classification system used in the specification AWS A 5.1 which is for carbon steel electrodes follows established pattern for AWS filler metal specification. The letter E designates an electrode. The first two digit, 60 for example designates tensile strength of atleast 60 ksi of the deposited metal, in the as welded condition. The third digit indicates position in which satisfactory welds can be made with the electrode. Thus the 1 in E 6010 indicates that the electrode is satisfactory for all positions. The '2' indicates that the electrode is suitable for the flat position and also for making fillet welds in horizontal position. The '4' in E 7048 indicates that the electrode is suitable for vertical down welding and other positions. The last two digits taken together indicate the type of current, and the type of flux  coating as listed in Table 1. The mechanical properties of the electrodes are given in Table 2.

The low alloy steel electrodes for SMAW process are covered in AWS A 5.5. The variation with respect to A 5.1 is, here the first, two or three digits indicate the tensile strength of weld deposit.

For example:


E 8018 - X; 80 ksi- Tensile strength E12018;  120 ksi - Tensile strength In addition, a letter suffix such as A1 indicates the chemical composition of weld deposit . Thus a complete classification of an electrode would be E 7010 - A 1, E 8016 - C2, etc.

1349_table 1.jpg

755_table 2.jpg

Posted Date: 9/14/2012 5:40:01 AM | Location : United States







Related Discussions:- Classification of electrodes, Assignment Help, Ask Question on Classification of electrodes, Get Answer, Expert's Help, Classification of electrodes Discussions

Write discussion on Classification of electrodes
Your posts are moderated
Related Questions
Q. Describe the Slope - Area Method? In the event of infeasibility of Velocity Area method on account of either rapid rise or fall of floods or lack of equipment or any other r

calculate the vertical reaction at A in Newtons

Main characteristics of couple: Sol.: The main characteristics of couple 1. The algebraic sum of the forces, having the couple, is zero. 2. The algebraic sum of moment

Explain construction and working of Belt transmission type Dynamometer?

Composite materials consist of two or more distinct components.  Generally we refer to a matrix and a reinforcement .  The reinforcement can be in the form of fibres (continuous

Axis perpendicular to the vertical plane - tetrahedron: A tetrahedron of side 60 millimeter has its base parallel to the VP, along with an edge of the base inclined at 45 o t

Q. Supply Fan - air-conditioning guidelines? Recheck final air quantities and static pressure. Indicate location of motor and belt guard. For fans located in plenums ensure ade

Carburettor Tuning :  It is very important that the carburettor is tuned properly to attain the best fuel efficiency and performance of the motorcycle. Since air screw is factory


Mounting Systems For The  Welding Head-Boom mounted type These are the most versatile type of welding systems. Normally the boom is supported by means of a column. The welding