Welding Position Derating Factor Calculator

Calculate derating factors for deposition rate, travel speed, and heat input based on welding position

Input Parameters

Results

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Adjusted Deposition Rate
lb/hr
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Adjusted Travel Speed
ipm
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Adjusted Amperage
A
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Position Efficiency Factor
%
Note: Position derating accounts for gravity effects on the molten weld pool. Vertical down is faster but gives less penetration. Always reduce amperage for out-of-position welding to maintain puddle control.

Reference

Welding Position Derating Factors (vs Flat): Flat (1G): 100% baseline Horizontal (2G): ~88% deposition, 90% travel Vertical Up (3G): ~55% deposition, 50% travel Vertical Down (3G): ~70% deposition, 110% travel Overhead (4G): ~60% deposition, 65% travel 6G Pipe: ~65% deposition, 60% travel