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
Compute the diameter of a solid shaft: Compute the diameter of a solid shaft transmitting 150 kW at 25 rpm, if the maximum shear stress in the shaft is not to exceed 70 MPa. C

At a point in a rectangular block of elastic material under strain, there is a tensile stress of 50MPa on one plane and a compressive stress of 30 MPa on a plane at right angles. T

What are the various methods for calculation of Natural frequencies? Illustrate one of them. A cylinder of diameter 100 mm and mass 1 Kg floats vertically in a liquid of mass de


calculate the head required

can a swimming pool that is full be cracked or lifted by hydrostatic pressure?

Charpy impact tests, when required shall comply. Impact tests shall be conducted at the minimum design metal temperature or at a lower temperature and shall meet or exceed energ

Principal Planes and Principal Stresses: Define the Principal Planes and Principal Stresses. Sol.: When an element in strained body is under action of plane stresses, it i

The following specification is used for the design of a flanged coupling between two coaxial shafts: Speed: 650rpm Power transmitted: 550 kW Bolt Diameter: 12 mm Pit

a compound cylinder is composed of a tube of 250mm internal diameter at 25mm wall thickness.it is shrunk on to a tube of 200mm internal diameter. the radial pressure at the junctio