Our story
Picking a material shouldn't start with a four-figure database licence.
I'm Johnny Mobley. I started building systems for other people in 2000, when I was 16, and I've been doing it ever since. Along the way I automated most of my own work, and the tools I built for myself became these companies. Each one runs on rules I wrote down, not on paid AI calls, which is why it can cost so little.
Early in a design, the questions are rough ones: which common alloys are light and stiff enough, what a carbon-epoxy layup comes out to, and whether a ply will hold under the loads you have in mind. I built MobleyMetal to answer those from published reference values and textbook formulas, on one page.
Every number is labelled for what it is: typical handbook values for comparison, a rule-of-mixtures estimate, or a failure index computed from strengths you supply. None of it is a certified data sheet, and MobleyMetal doesn't make or test metal.
What works today
- Shows typical density, tensile and yield strength and stiffness for common structural alloys and composites, with sources
- Suggests one to three candidate materials from that table for a use you describe, with the reasoning
- Estimates a fiber composite's density, stiffness and strength from the fiber, the resin and the fiber fraction you pick
- Computes a Tsai-Hill failure index from lamina strengths and stresses you enter
- Shows the latest US producer price index for iron and steel and for nonferrous metals
What it doesn't do yet
Total Materia still does things MobleyMetal doesn't:
- Data for thousands of specific grades and alloys. MobleyMetal's table covers eight common ones.
- Equivalent grades across national standards.
- Certified, supplier-specific data sheets.
- Temperature-dependent and fatigue properties.
What it costs
| What you get | Price | |
|---|---|---|
| Total Materia Basic Package, single user, yearly | Material properties and equivalency across a large database of grades. | $1,600/year |
| MobleyMetal | Everything above, no account needed. An optional $4 pass for 30 days adds 30 days of price-index history. | Free |
Total Materia's price is from their pricing page as of October 29, 2026. Prices change, so check theirs before you compare.
Open MobleyMetal— Johnny