The Forney 30685 7018 AC Mild Steel Low Hydrogen Welding Rod produces quality results on lower amperage welders. Suitable for all positions on hard enable steels without pre-heating. Good for cold rolled steels that do not react well with conventional rod. Low hydrogen content reduces cracking. 1/8-Inch ie.3.175 mm diameter rod. 5-Pounds ie.2.26 kg. Tensile strength 70,000 PSI. Amperage 90-165 Amps AC, DCEP, DCEN Either Polarity. Typical Spec Example E6011: E is for electrode. The next two numbers ie.60, 70 or 80 indicates the tensile strength of the rod for example 60,000. The third number tells the welding position; ie.1=All position ie.2=Flat or Horizontal position ie.4=Flat, Horizontal, Overhead and Vertical Down position. The fourth number indicates the type of current to be used and coating of the rod; ie.0=Cellulose Sodium, with deep penetration, use Direct Current Electrode Positive ie.1=Cellulose Potassium, with deep penetration, use AC or Direct Current Electrode Positive, or Direct Current Electrode Negative ie.3=Titania Potassium, with light penetration, use AC or Direct Current Electrode Positive ie.8=Low Hydrogen, Iron Powder, with medium penetration use AC or Direct Current Electrode Positive. Proof of purchase required.