Technical notes
Engineering deep-dives on the math, materials science, and qualification standards behind ForgeCast's recommendations.
A practical walk-through of choosing γ, scaling R-ratio-shifted S-N data, and avoiding the most common Walker misuses on AM-built coupons.
Defect populations, surface state, and build location each contribute. Here is how each one shows up in the S-N data and what to do about it.
HIP roughly doubles the fatigue allowable on L-PBF Ti and nickel — but only if your defect mode is gas porosity. Here is when it doesn't.
The first MMPDS edition with a dedicated AM chapter materially raises the bar. Here is what changed and what it means for design submissions.
Columnar grains aligned with the build direction make Z-pulls 5–15% weaker in UTS and up to 30% weaker in fatigue. Here's how to design around it.
Each build leaves residual oxygen in the unmelted powder. Past a per-alloy threshold, mechanical properties collapse before density does.
On many real parts the support strategy is half the total cost. Self-supporting redesign usually pays back inside the first build.
AM lets you print channels investment casting can't — but only inside a specific envelope of diameter, angle, and powder-evacuation geometry.
From theory to a ranked recommendation
The wizard applies the corrections, allowables, and qualification logic discussed in these notes to your actual part geometry.