AWS Filler Metals & Consumables

Question 1

In the AWS electrode classification E7018, what does the number '70' represent?

Accepted Answer

Minimum tensile strength of 70,000 psi

Answer

Electrode diameter of 7/0 inches

Answer

Welding current of 70 amps

Answer

Iron powder content of 70%

Question 2

What does the third digit '1' in the AWS electrode classification E7018 indicate?

Accepted Answer

The electrode is suitable for all welding positions

Answer

The electrode is for flat position only

Answer

The electrode uses AC current only

Answer

The electrode has 1% iron powder content

Question 3

Which SMAW electrode classification uses a high cellulose sodium coating and strictly requires DC electrode positive (DCEP) current?

Accepted Answer

E6010

Answer

E6013

Answer

E7018

Answer

E7024

Question 4

Why must low-hydrogen electrodes (such as E7018) be stored in a heated oven at 250–300°F (121–149°C)?

Accepted Answer

To prevent moisture absorption into the coating

Answer

To increase electrode ductility before use

Answer

To maintain the electrode's rated current capacity

Answer

To prevent surface oxidation of the steel core

Question 5

In AWS filler metal classification, what does the prefix 'ER' stand for?

Accepted Answer

Electrode or Rod

Answer

Extra Reinforced

Answer

Enhanced Resistance

Answer

Electrode Rated

Question 6

In the AWS classification ER70S-6, what does the 'S' designate?

Accepted Answer

Solid wire

Answer

Stainless steel alloy

Answer

Special low-alloy composition

Answer

Submerged arc application

Question 7

Which AWS specification covers carbon steel electrodes for shielded metal arc welding (SMAW)?

Accepted Answer

AWS A5.1

Answer

AWS A5.18

Answer

AWS A5.20

Answer

AWS A5.17