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Materials Prep
THE ETCHANT CATALOG · INSIDE MATERIALS PREP

A metallographer’s etchant catalog, in a working lab notebook.

About 2,700 etchant entries drawn from PACE’s decades of metallography work, searchable inside Materials Prep, a metallography ELN built by the PACE team and sold separately at materialsprep.com.

Free to try · Free tier for individuals.

materialsprep.com / labs / coyote-lab / etchants
Materials Prep etchant catalog with filters applied: a list of metallographic etchants showing material family, alloy, scale, method, composition, and what each etch reveals

The PACE etchant catalog, brought online and indexed.

The curated catalog is read-only inside Materials Prep. Each entry carries the reference it was drawn from.

~2,700

Etchant entries drawn from PACE’s longstanding metallography work.

13+

Material families. Steels, Stainless, Aluminum, Titanium, Copper, Magnesium, Cast Iron, Superalloys, Refractories, Ceramics, Composites, Weld zones, Electronic materials.

10

Etching methods. Chemical, Electrolytic, Tint, Color, Staining, Anodizing, Molten salt, Thermal, Plasma, Ion beam.

per entry

Composition, procedure, application notes, safety profile, and citation, all on one card.


What you can do with it.

SEARCH & FILTER

Search and filter by what matters.

Free-text across reagent name, composition, and application. Filter by material family, alloy, micro vs macro, method, and the feature the etch reveals (grain boundaries, phases, weld HAZ, prior austenite, P-segregation, and so on). Filter counts update live.

COMPOSITION · SAFETY

Everything you need before you reach for the bottle.

Each entry shows composition and procedure as copyable blocks, the alloy pairs it applies to, what it reveals, and a safety panel with PPE codes, GHS pictograms, and disposal notes. Variants of the same reagent (Nital 2%, Nital 5%, Beraha I/II/III) group into one card so you do not get duplicate rows.

LAB VARIANTS

Your lab’s own etchants, alongside the catalog.

Add custom etchants with the same fields plus a lab-private notes section for operator tips and supplier hints. They appear in the browser next to the curated entries, marked with your lab’s name, and never merge into the canonical recipes. Retiring a custom etchant leaves existing recipe steps intact.

ADVISOR · M.AI

One click into a recipe, or ask Mai.

When you add an etch step to a recipe, the catalog opens as an Advisor pre-filled with the sample’s material and alloy. One click drops composition and procedure into the step. The Mai AI assistant can also search the catalog and cite an entry directly in its reply.


Is this part of metallographic.com?

No. Materials Prep is a separate software product, an electronic lab notebook for metallography, built by the PACE Technologies team and sold at materialsprep.com. This page is here so the people who came looking for our old etchant selector know where the etchant work moved to.

Where do the ~2,700 etchants come from?

They are drawn from the PACE team’s metallography work over the years. Each entry carries its own reference citation inside the app. The curated catalog is read-only; lab admins and technicians add their own entries separately, scoped to their lab.

Can I add my own etchants?

Yes. A lab can author its own etchants with the same fields as the catalog plus a lab-private notes section. They appear in the browser alongside the curated entries with the lab’s name on the card. They never merge into the canonical recipes, and retiring one preserves any existing recipe steps that cite it.


The right etchant, on hand.

Free to try. Materials Prep is sold separately at materialsprep.com.

Built by PACE Technologies, makers of metallography sample preparation products since 1997. Sold separately from this site.