924WELDING SUPPLIES

924.01Welding Supplies

Bare wire electrodes for use with the gas metal arc welding process and welding rods for use with the gas tungsten-arc we lding process shall be in accordance with AWS A5.10. Tungsten electrodes for the gas tungsten-arc welding process shall be in 10 accordance with the Specifications for Tungsten-Arc Welding Electrodes, AWS A5.12.

Filler metals to be used with particular base metals shall be as shown in the table below. Other filler metals may be used if approved.

Base Metal Filler Metal 3003 to 3003 ER1100 3004 to 3004 ER4043 5052 to 5052 ER5356* 5083 to 5083 ER5183 5086 to 5086 ER5356* 5456 to 5456 ER5556 6061 to 6061 ER5356* 6063 to 6063 ER5356* 356.0 to 6061 ER4043 356.0 to 6063 ER4043 * ER5183, ER5356, and ER5556 may be used interchangeably for these base metals.

Filler metals shall be kept covered and stored in a dry place at relatively uniform temperatures. Original rod and wire containers shall not be opened until time to be 20 used. Rod and wire shall be free of moisture, lubricant, or other contaminants. Spools of wire temporarily left unused on the welding machine shall be kept covered to avoid contamination by dirt and grease collecting on the wire. If a spool of wire is to be unused for more than a short length of time, it shall be returned to the carton and the carton tightly sealed.

Shielding gases shall be welding grade or better. Shielding gas for gas metal-arc welding shall be argon, helium, or an approximate 75% helium and 25% argon mixture. Shielding gas for gas tungsten-arc welding done with alternating current shall 30 be argon. Shielding gas for gas tungsten-arc welding done with direct current, straight- polarity, shall be helium.

924.01

Hose used for shielding gases shall be made of synthetic rubber or plastic. Hose which has been previously used for acetylene or other gases shall not be used.