Weld Dilution Ratio
Weld dilution = melted base-metal area / total deposit area, the base-metal fraction of the deposit.
Example
You enter
- Melted base-metal (penetration) area (in²) 0.03
- Filler (reinforcement) area (in²) 0.05
You get
- Dilution (base-metal share) 37.5%
- Filler share 62.5%
No published worked example is on file for this calculation. It is checked against a hand-worked derivation of its method and an independent reference test.
Details, formula, and sources
ScopeA structural single-pass weld runs 30-40% (A_base 0.03, A_filler 0.05 -> 37.5%); a hardfacing overlay is kept low (16.7%) so the alloy stays near the filler. The WPS and filler data govern.
Formula or tabledilution = A_base / (A_base + A_filler) x 100; filler_share = 100 - dilution.
Source and editionThe standard welding-metallurgy weld-dilution definition, by name.
Free accessWeld dilution is a standard welding-metallurgy term defined in AWS references and filler-metal literature. The WPS and the filler-metal data govern.
What governsEstimate. AHJ and licensed professional govern.
API field namesA_base, A_filler, dilution_pct, filler_share_pct
- Definition dilution = A_base / (A_base + A_filler)welding metallurgy / AWS
- Overlay goal hardfacing/corrosion overlays kept low-dilution to preserve the filler chemistrywelding practice
- Area ratio only uses entered areas; does not compute the diluted alloy compositionscope of this tile