Chapter 9 (identifying electrodes)

What are the 5 requirements established by AWS A5.1/A5.1 M for electrode classification

• Mechanical properties, usability, sizes, manufacturing,

• Electrode brand, Electrode price, Welding experience, Welding certification, Current frequency
• Electrode color, Electrode shape, Welding temperature, Welding environment, Current intensity
• Electrode size, Electrode material, Welding technique, Welding speed, Voltage type

What does the "E" in the classification of electrodes stand for?

• Energy
• Element
• Electricity
• Electrode

What do the first two numbers of the four digit number stand for in electrode classification?

• Tensile strength
• Atomic number
• Melting point
• Electrical conductivity

What does the third number in the four digit number represent in electrode classification

• welding position

• electrode shape
• electrode material
• electrode size

Match the following

• Flat, Horizontal,Vertical Down, Overhead

• 1

• Flat Position and horizontal fillets

• 2

• All positions

• 4

What does the forth number in the four digit number represent in electrode classification

• The forth number represents the type of coating and current of the electrode

• The forth number represents the material of the electrode
• The forth number represents the type of the electrode
• The forth number represents the size of the electrode

What does the "-1" suffix mean in welding classification

• High temperature electrode
• Improved Impact Strength

• Low quality electrode
• Vertical position electrode

What does the "HX" stand for in electrode classification

• High Temperature
• Hexagonal Shape
• Hazardous Material
• Less than 4, 8, OR 16 ml of hydrogen per 100g weld deposit

What does the "R' represent in electrode classification

• positive polarity
• meets the requirements of the resistance test

• rechargeable
• meets the requirements of absorbed moisture test

Label the diagram

b

c

d

a

Tensile strength

electrode

weld position

Coating & Current