Classification of electrodes, Mechanical Engineering

Assignment Help:

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


Related Discussions:- Classification of electrodes

Computational mechanics in design, Figure shows an impression of one of man...

Figure shows an impression of one of many lifting arrangements produced and used at a steel fabrication workshop. It was manufactured to lift a maximum of 50 kg and due to a produc

Forecasting system outputs, Forecasting System Outputs: In a company, ...

Forecasting System Outputs: In a company, inventory level is reviewed biweekly. If the parts used in an assembly have the lead time of one and a half week, what period should

Determine coefficient of friction, Following data is provided for a 360 o ...

Following data is provided for a 360 o hydrodynamic bearing : Radial load = 3.2 kN journal Speed =1490 rpm journal diameter = 50 mm bearing length = 50 mm radial cl

Find out the forces in members, Find out the forces in members: A brac...

Find out the forces in members: A braced support ABC is loaded as illustrated. Find out the forces in members AB, BC, BD and AD by the method of joints. Check out the results

Comparison between work and heat - thermodynamics, Comparison between work ...

Comparison between work and heat - thermodynamics: There are a number of similarities between heat and work. 1. Both heat and work are transient phenomena. The systems do n

Corrosion resistance of zirconium, Q. Corrosion resistance of Zirconium? ...

Q. Corrosion resistance of Zirconium? Zirconium offers excellent corrosion resistance to most oxidizing and reducing acids and virtually all alkalis. However, it is not resist

Battery electrolyte and gases and brake fluid safety tips, Battery Electrol...

Battery Electrolyte and Gases Battery emits explosive gases, keep sparks and flames away. Ensure adequate ventilation while charging the battery. Brake Fluid Spilling

What are the need of a surface condensing, (a) What are the need of a surfa...

(a) What are the need of a surface condensing ? Write disadvantages and advantages of Jet condenser and surface condenser. (b) A surface condenser is designed to handle 10000 Kg

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd