Lesson 4 - Covered Electrodes for Welding Low Alloy Steels

DEPOSITION EFFICIENCY DATA-LOW ALLOY, IRON POWDER ELECTRODES

Lesson 1
The Basics of Arc Welding

Lesson 2
Common Electric
Arc Welding Processes

Lesson 3
Covered Electrodes for Welding
Mild Steels

Lesson 4
Covered Electrodes for Welding Low Alloy Steels

Lesson 5
Welding Filler Metals for Stainless Steels

Lesson 6
Carbon & Low Alloy
Steel Filler Metals -
GMAW,GTAW,SAW

Lesson 7
Flux Cored Arc Electrodes Carbon Low Alloy Steels

Lesson 8
Hardsurfacing Electrodes

Lesson 9
Estimating & Comparing Weld Metal Costs

Lesson 10
Reliability of Welding Filler Metals

APPENDIX A STICK ELECTRODE DATA CHARTS ATOM ARC ELECTRODES TYPES E7018, E8018, E9018, E10018, E11018, AND E12018 ELECTRODE DEPOSITION EFFICIENCY ELECTRODE DEPOSITION EFFICIENCY DIAMETER AMPS RATE lbs/hr % DIAMETER AMPS RATE lbs/hr % 3/32 70 1.37 70.50 3/16 200 4.85 76.40 90 1.65 66.30 250 5.36 74.60 110 1.73 64.40 300 5.61 70.30 1/8 120 2.58 71.60 7/32 250 6.50 75.00 140 2.74 70.90 300 7.20 74.00 160 2.99 68.10 350 7.40 73.00 5/32 140 3.11 75.00 1/4 300 7.72 78.00 170 3.78 73.50 350 8.67 77.00 200 4.31 73.00 400 9.04 74.00

CHART TO CONVERT ENGLISH

ELECTRODE DIMENSIONS TO METRIC

EQUIVALENTS

DIAMETER LENGTH Inches mm Inches mm 3/32 2.4 12 300 1/8 3.2 14 350 5/32 4.0 14 350 3/16 4.8 14/18 350/450 7/32 5.6 18 450 1/4 6.4 18 450 5/16 8.0 18 450 STUB"LOSS CORRECTION TABLE FOR COATED ELECTRODE EFFICIENCY INCLUDING STUB LOSS ELEC. DEPOSITION 2" 3" 4" 5" LENGTH EFFICIENCY STUB STUB STUB STUB 60% 50.0% 45.0% 40.0% 35.0% 65% 54.2% 48.7% 43.3% 37.9% 12" 70% 58.3% 52.5% 46.6% 40.8% 75% 62.5% 56.2% 50.0% 43.7% 80% 66.6% 60.0% 53.3% 46.6% 60% 51.4% 47.1% 42.8% 38.5% 65% 55.7% 51.1% 46.4% 41.8% 14" 70% 60.0% 55.0% 50.0% 45.0% 75% 64.3% 58.9% 53.6% 48.2% 80% 68.5% 62.8% 57.1% 51.4% 60% 53.3% 50.0% 46.6% 43.3% 65% 57.7% 54.2% 50.5% 46.9% 18" 70% 62.2% 58.3% 54.4% 50.5% 75% 66.6% 62.5% 58.3% 54.2% 80% 71.1% 66.6% 62.2% 57.7%

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