What Is A PE-M&M?

What a PE-M&M Actually Is

On this site, PE-M&M means one thing: the Principles and Practice of Engineering - Metallurgical and Materials examination. It is the licensing exam that engineers take, after meeting their board's requirements, to become a Professional Engineer (PE) in the metallurgical and materials discipline. NCEES lists it officially as "PE Metallurgical and Materials."

That framing matters because the acronym is easy to confuse. The PE-M&M is not a vendor credential, a trade-association badge or a continuing-education certificate. It is a single-day, computer-based licensure exam that tests whether an engineer with progressive experience can practice competently in the discipline and protect public welfare. If you want the other angles on the same question, our related explainers cover the PE-M&M meaning and what PE-M&M stands for.

Who Writes, Administers and Delivers the Exam

The exam is developed and administered by the National Council of Examiners for Engineering and Surveying (NCEES). The licensing boards of the states and territories rely on NCEES exams, but each board controls its own rules for who may sit and who may be licensed.

Delivery runs through Pearson VUE at approved Pearson test centers. Testing is in person; there is no remote option. The PE-M&M is offered as an annual, single-day computer-based exam, and the scheduled administration is October 28, 2026. Every examinee in an administration receives the same question set. For deadlines and scheduling mechanics, see PE-M&M exam dates, testing windows and deadlines.

The Closed-Book Condition

The exam is closed book, but you are not working from memory alone. NCEES supplies a searchable electronic reference handbook inside the exam. Personal reference materials are prohibited, and you may use one NCEES-approved calculator. Older prep-page descriptions that mention open-book formats are outdated; the current NCEES specification, effective beginning with the October 2024 exam, takes precedence. Learning to navigate the handbook quickly is a real skill, so practice with it early rather than the week before your appointment.

Format, Timing and Item Types

Two Sections, One Clock

The exam is delivered in two sections that share the testing clock, and once you submit a section you cannot reopen it. Budget your time deliberately: a long numerical problem on grain-size relationships or diffusion can consume minutes you need later. Because there is no penalty for wrong answers, never leave an item blank. Because there is no partial credit, a multiple-correct item that you only half understand is scored the same as one you skipped, so make a reasoned selection and move on.

Some questions are unscored pretest items, and you cannot tell which ones. Treat every question as if it counts.

The Four Official Exam Domains

The NCEES specification organizes the exam into four numbered domains. These are official exam objectives, not a suggested study curriculum, and NCEES publishes question-count ranges rather than fixed percentage weights. For a deeper walkthrough, read our complete guide to the four PE-M&M content areas.

The subtopics above illustrate each domain; they are not an exhaustive list. Always check the exact blueprint, the NCEES Metallurgical and Materials CBT Exam Specifications, for the authoritative wording.

The Material-Specific Mix: Ferrous, Nonferrous, Polymers, Ceramics

Separate from the four domains, NCEES describes an approximate distribution of the exam's material-specific questions by material class:

The practical message is clear: if your background is in steel, you start with an advantage, and if it is in polymers or ceramics you must still build solid ferrous fluency. Ferrous metallurgy (iron-carbon equilibria, hardenability, tempering, stainless and tool steels, cast irons) is the single most heavily tested material class. A candidate who works exclusively with composites or ceramics should expect the exam to reach well beyond their daily work.

Who Can Sit for It

There is no single national eligibility rule. Your selected licensing board controls who may sit for the exam and whether any approval is required first. A common licensure pathway looks like this:

1. Earn an EAC/ABET-accredited engineering bachelor's degree.
2. Pass the Fundamentals of Engineering (FE) exam.
3. Complete four years of acceptable engineering experience.
4. Pass the PE exam.

That sequence is common, but it is not a universal exam-sitting prerequisite. Some boards allow candidates to sit earlier or on different terms, and board application fees can be charged separately from NCEES. NCEES Record applications for engineering use five U.S.-licensed engineer references, but that too is not a universal requirement for sitting the exam. Confirm everything with your board first, then read our detailed breakdown of PE-M&M eligibility and prerequisites.

Scoring, Passing Standard and Pass Rates

NCEES reports results as pass or fail. The passing criterion is a scaled score that meets the NCEES minimum-competence standard. NCEES does not publish a numerical passing score, so any site quoting a specific cut number is guessing. Our page on the PE-M&M passing score explains what is and is not known.

NCEES's pass-rate table, updated January 2026, shows a 49% first-time pass rate (43 examinees) and a 50% repeat pass rate (8 examinees). Two cautions apply. First, those figures describe a prior October administration, not the upcoming October 2026 sitting. Second, the sample is small, so a handful of examinees shifts the percentage noticeably. For fuller context, see what the PE-M&M pass-rate data shows and how hard the PE-M&M exam really is.

Cost, Careers and Salary Context

NCEES charges US$400 per attempt. Separate board application fees can apply, and your total spend also depends on prep materials and any travel to a test center. The official NCEES e-book practice exam costs $59.95, contains 85 questions with solutions, and includes 14 new questions and alternative item types based on the October 2024 specifications. It is the most format-accurate practice resource available, though note that NCEES has posted errata for its practice exam, so check the corrections alongside your copy. Our PE-M&M cost breakdown covers the full budget.

Where Metallurgical and Materials Engineers Work

Metallurgical and materials engineers appear in primary metals production, foundries and forging shops, aerospace and defense supply chains, energy and power generation, failure-analysis and testing laboratories, polymer and composite manufacturers, and consulting practices. A PE license carries the most weight in roles involving public-facing sign-off, expert-witness work, consulting, and government or regulated projects, though many industrial materials jobs do not require one. See our overview of PE-M&M jobs for more.

Sequencing Your Preparation by Domain

You do not need a generic study system here, just an order that respects how the exam is built. Because Structure feeds the other three domains, start there, even though it carries the smallest question range. Then give your heaviest hours to Performance and Processing, where the largest question ranges sit. A reasonable sequence:

Spend your weak-spot time on the material classes outside your daily work, since the ferrous share is large and the exam mixes in material-independent and multi-material items. For a fuller plan, see the PE-M&M study guide, the one-page PE-M&M cheat sheet, and details on PE-M&M training options. When you are ready to test yourself, work through our PE-M&M practice questions and then take a full-length simulation on the main practice test site.

Frequently Asked Questions