Weld Length from Deposited Mass
Estimates weld length from a deposited (or consumable) mass, a weld cross-section area, and a material density, using this project's own arithmetic/geometry model — mass = density × volume, for a constant-cross-section weld. This is a geometric estimate only: it does not predict actual consumable usage exactly, does not calculate cost, does not calculate a deposition rate, does not derive a cross-section area from joint or bead geometry, and does not approve a WPS/PQR or a production run.
Engineering calculator — results require technical review before production use.
Source & assumptions
No formula for estimating weld length from deposited mass is stated by IWE Module 2, or by any other source cited in this project. This calculator's core arithmetic (mass = density × volume, for a constant-cross-section weld) is this project's own engineering/geometry implementation model — not attributed to IWE Module 2 or any other source. The related concept of a deposited cross-section area is discussed in IWE Module 2, Chapter 5, Section 2 (already registered as FR-005's Deposit Coefficient / Deposited Cross-Section) — cited here only for that narrow related concept, never as evidence for this calculator's own length-from-mass model. See W019_WELD_LENGTH_FROM_MASS_SPEC.md Section 2 for the full derivation and this distinction.
Assumptions
- This is a geometric arithmetic model only: depositedVolumeCm3 = depositedMassG / densityGPerCm3, and estimatedWeldLengthM = depositedVolumeCm3 / crossSectionAreaMm2 — general mass/density/volume relationships applied to a constant-cross-section weld, not a source-stated welding formula.
- Weld cross-section area is assumed constant along the length — this model treats the weld as a uniform prism; it does not model tapering, root/cap variation, or any other along-length cross-section change.
- Deposited mass is assumed to become weld metal in the joint/bead — no allowance is made for mass that does not end up in the finished weld, except via the Path B deposition-efficiency factor.
- Density is assumed constant over the length and cross-section calculated.
- No allowance for waste is made unless the consumable-mass/deposition-efficiency path (Path B) is used — Path A's depositedMass is taken at face value as mass that became weld metal.
- Density is manually entered — this block implements no density presets or lookup table, since no source-controlled density reference exists in this project to build one from.
- A composition supplied with Path B's depositionEfficiency is treated strictly as a user-entered estimate, never as a derived or looked-up value.
- Result requires engineering review — this calculator does not determine actual consumable requirements, cost, or production acceptance.
Limitations
- Estimate only.
- Not a guarantee of actual consumable usage.
- Not a consumable purchase guarantee.
- Not a weld cost calculator.
- Not a deposition-rate calculator.
- Not a weld-volume geometry calculator — cross-section area must always be supplied directly; it is never derived from joint or bead geometry.
- Does not approve a WPS or PQR.
- Not a production-acceptance decision.
- Does not account for bead-shape variation, penetration profile, overfill, root gap, weld-preparation tolerance, process variation, spatter, slag, stub loss, burn-off, recovery, grinding, repair welding, operator technique, or measurement uncertainty.
- Does not replace welding coordination review, production planning, procedure qualification, measurement, or engineering judgement.
- Results require technical review before production use.