2 0.5" 0.5" (A) HEIGHT (B) BASE Volume of Weld   = .5B x A x 12 Weight of Steel    = .283 lb per cu. in. Weight of Weld = (0.5 x 0.5) x 0.5 x 12 x .283 = .424 lb. CALCULATING THE WEIGHT PER FOOT OF A FILLET WELD In the fillet weld shown below, the area of the cross-section (the triangle) is equal to one half the base times the height, the volume of the weld is equal to the area times the length, and the weight of the weld then, is the volume times the weight of the material (steel) per cubic inch. This example is for a fillet weld with no reinforcement. Similar calculations can be made for butt or lap joints. Deposition Efficiency The deposition efficiency of an electrode or welding wire indicates the portion of that product you can expect to be deposited as weld metal. Losses due to slag, spatter, fume and in the case of semi automatic or automatic welding processes, the ends cut before each weld and the wire left in the feed cable make no process 100% efficient. For estimates of electrode or wire consumption, the following average values of deposition efficiency may be used. Deposition Process Efficiency Submerged Arc 99% Gas Metal Arc (98%A, 2%O2) 98% Gas Metal Arc (75%A, 25%CO2) 96% Gas Metal Arc (C02) 93% Metal Cored Wires 93% Gas Shielded Flux Cored Wires 86% Self Shielded Flux Cored Wires 78% * Shielded Metal Arc (Stick 12" long) 59% * Shielded Metal Arc (Stick 14" long) 62% * Shielded Metal Arc (Stick 18" long) 66% * Includes 2" stub loss.
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