Fine

Medium

Course

Rough

Covered electrode

Increase metal recovery

Hydrogen controlled electrode

Radio graphic quality electrode

0.05% to 0.30%

0.05% to 0.8%

0.30% to 0.6%

0.6% to 1.2%

Over lap

Under cut

Lack of fusion

Lack of penetration

Poracity

Under cut

Lack of fusion

Excessive penetration