E7048 is an iron-powder-potassium low hydrogen flux coated electrode developed to provide exceptional welding properties for vertical down welding application. 7048 electrodes are designed to weld mild, low carbon, low alloy, and free-machining steels. 7048 has a very good deposition rate, providing a stable arc with extremely low spatter loss with good penetration.7048 is known for x-ray quality weld deposits with smooth, uniform bead appearance and ease of slag removal. 7048 is designed to operate on AC or DC reverse polarity (DCEP) welding current.7048 is extensively used for fabrication and repair of fired and non-fired pressure vessels using ASTM A-516 or A-537 plate, process piping using ASTM A-33 or A-523 pipe, shop and field welding or bridges using ASTM A-709 plate, shipbuilding using ASTM A-131 plate, structural steels, cast steels, and cold rolled steels used in heavy machinery fabrication. 7048 is used anywhere welds are deemed critical and subject to x-ray inspection.
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Size: 3/32 in.
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AWS A5.1: E7048
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Weight: 10 LB
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Coating Type: Low hydrogen flux coated
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Polarity: AC or DC reverse polarity (DCEP)
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Carbon Content Max: 0.15%
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Manganese Max: 1.60%
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Silicon Max: 0.90%
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Phosphorus Max: 0.035%
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Sulphur Max: 0.035%
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Nickel Max: 0.30%
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Chromium Max: 0.20%
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Molybdenum Max: 0.30%
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Vanadium Max: 0.08%
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Elongation in 2 inches: 22% min
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Yield Strength: 58 ksi min
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Tensile Strength: 70 ksi min
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Charpy V-notch Impact: 20 ft lbs min @ -20 F
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Application: Vertical down welding
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Base Metals: Mild steel, low carbon steel, low alloy steel, free-machining steels
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Deposition Quality: X-ray quality weld deposits
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