Weld Volume / Weld Metal Mass Estimator

Estimates theoretical weld volume from a cross-section area and a weld length, and — when a density is supplied — theoretical deposited weld metal mass. A theoretical geometry/arithmetic estimate only. It does not measure a real weld, does not estimate actual consumable usage or a purchase quantity, does not estimate cost, and does not decide inspection or standard-compliance acceptance or approve a WPS/PQR.

Engineering calculator — results require technical review before production use.

Source & assumptions

No weld-volume or weld-metal-mass formula stated by ISO 5817, ISO 9606, ISO 15614, AWS, IWE Module 2, or any other source is cited or claimed for this calculator. Its core arithmetic (theoreticalVolumeCm3 = crossSectionAreaMm2 * weldLengthM; depositedMassG = theoreticalVolumeCm3 * densityGPerCm3) is this project's own engineering arithmetic / geometric implementation model — the general physical identities volume = area * length and mass = density * volume, the same identity pair FR-012 (Weld Length from Deposited Mass) already applies in reverse — not attributed to any welding standard or compendium. FR-013 (Fillet Weld Area / Throat Geometry) is named only as a possible future source of crossSectionAreaMm2, and FR-005 (Deposit Coefficient / Deposited Cross-Section) only for the related deposited-cross-section-area concept — neither is cited as proof of this calculator's own volume/mass model. See W021_WELD_VOLUME_MASS_SPEC.md Section 3 for the full derivation.

Assumptions

Constant cross-section area along the entire weld length — no allowance for a tapering, stepped, or varying cross-section.
The entered area represents the intended theoretical deposited cross-section, not a measured value.
The entered length represents the weld length to be estimated, not a measured value.
Density is manually entered and assumed constant, when mode "massFromVolume" is used.
1 m x 1 mm2 = 1 cm3, exactly, with no conversion factor beyond unit arithmetic.
No allowance for waste/loss between consumable and deposited mass.
No overfill, convexity, concavity, penetration, or root-gap allowance.
No design-code acceptance check of any kind.
Result requires engineering review — this calculator does not determine actual consumable requirements, cost, or production acceptance.

Limitations

Theoretical estimate only.
Not a measured weld volume.
Not actual consumable usage.
Not a consumable purchase guarantee.
Not a weld cost calculator.
Not a deposition-rate calculator.
Not a weld geometry calculator.
Not weld inspection acceptance.
Not structural design verification.
Does not approve a WPS or PQR.
Not production acceptance.
Does not account for actual weld profile, penetration, root gap, fit-up tolerance, undercut, convexity, concavity, grinding, repair welding, spatter, slag, stub loss, burn-off, recovery, operator technique, or measurement uncertainty.
Does not replace welding coordination review, design review, production planning, inspection, macro examination, procedure qualification, or engineering judgement.