- The CAWI Passing Score: 60% Per Part, Not an Average
- How the Three Exam Parts Are Structured
- Why the Per-Part Rule Changes How You Should Study
- Minimum Subject Allocations by Part
- Part B: The Hands-On Score That Trips People Up
- Part C: Open-Book Doesn't Mean Easy Points
- Scheduling Your Prep Around the Score Structure
- Fees, Eligibility, and How Scoring Connects to Registration
- Frequently Asked Questions
- You need at least 60% on Part A, 60% on Part B, and 60% on Part C - separately, not averaged.
- The full Exam line spans 266 questions across 390 minutes of active testing over three separate parts.
- AWS recommends taking Part B (46 questions, 120 minutes) before Parts A and C.
- Part A has 150 scored questions plus 15 pretest items; Part C has 50 scored plus 5 pretest items.
The CAWI Passing Score: 60% Per Part, Not an Average
The single most misunderstood fact about the Certified Associate Welding Inspector exam is this: there is no combined or averaged passing score. AWS requires candidates to score at least 60% on each of the three parts - Part A, Part B, and Part C - independently. Scoring 90% on Part A does not offset a 55% on Part B. Each part is graded on its own, and each must clear the 60% threshold on its own.
This is different from how many licensing exams work, where a single overall cut score determines pass/fail. If you're used to that model from other certifications, it's worth re-reading the CAWI Exam Domains 2026 guide before you build a study plan, because the domain structure and the scoring structure are the same three parts.
How the Three Exam Parts Are Structured
Before you can hit 60% in each part, you need to know exactly what each part looks like. The CAWI Exam line - the complete initial U.S. English examination with AWS D1.1 structural steel as Part C - is not a single sitting. It's three distinct testing events with different formats, different delivery methods, and different question counts.
Domain 1: Part A Fundamentals
Closed-book, computer-based via Prometric. Tests general welding knowledge without reference materials.
- 165 total questions: 150 scored + 15 unscored pretest items
- 135 minutes of testing time
- No codebooks or notes allowed - pure recall and applied fundamentals
Domain 2: Part B Practical
Paper-based, hands-on, administered at AWS-authorized sites (not Prometric). Uses physical weld replicas, supplied specifications, and inspection tools.
- 46 questions in 120 minutes
- AWS recommends candidates take this part before Parts A and C
- Requires physically measuring, inspecting, and evaluating real weld samples
Domain 3: Part C Code Book
Computer-based via Prometric, open-book against AWS D1.1. Tests code application, not memorization.
- 55 total questions: 50 scored + 5 unscored pretest items
- 135 minutes of testing time
- Site prep content targets D1.1:2025, though D1.1:2020 is also permitted per the Exam References and Editions Guide
Add it up and the Exam line totals 266 questions across 390 minutes of active testing - but again, this is not one appointment. It's three separate sessions, each scored on its own 60% line. For a deeper walkthrough of what each domain actually tests, see the complete guide to all three content areas.
Why the Per-Part Rule Changes How You Should Study
Because scores aren't averaged, you can't "bank" strength in your best subject and coast elsewhere. If Part A fundamentals come naturally to you but Part B's hands-on measurement work doesn't, cramming more Part A trivia won't rescue a failing Part B score. The two are scored - and must be passed - completely independently.
This has a practical consequence for anyone wondering how hard the CAWI exam actually is: difficulty isn't just about content volume, it's about needing three separate 60%-or-better performances under three different formats (closed-book recall, hands-on physical inspection, open-book code lookup). A candidate who is strong in only one or two formats is at real risk, even if their overall knowledge is solid.
Key Takeaway
Treat Part A, Part B, and Part C as three separate exams you must each individually clear at 60%, not as three sections of one test you can average. Study time should be allocated to your weakest part, not your favorite one.
Minimum Subject Allocations by Part
Within each part, AWS publishes minimum subject allocations - the smallest percentage of that part's questions guaranteed to cover a given topic. These aren't fixed shares of the combined 266-question Exam line; they're minimums within each individual part's question set.
| Part | Subject Area | Minimum Allocation |
|---|---|---|
| Part A | Definition and Terminology | 12% |
| Part A | Welding Processes | 12% |
| Part A | Symbols - Welding and NDE | 10% |
| Part A | Weld Examination | 10% |
| Part A | Welding Performance | 9% |
| Part A | Test Methods - NDE | 8% |
| Part A | Heat Control & Metallurgy | 6% |
| Part A | Welding Related Calculations | 6% |
| Part A | Duties and Responsibilities | 4% |
| Part A | Destructive Tests | 3% |
| Part A | Cutting | 2% |
| Part B | Welding Inspection and Flaws | 34% |
| Part B | Procedure and Welder Qualifications | 28% |
| Part B | Mechanical Test and Properties | 8% |
| Part B | NDE | 8% |
| Part B | Utilization of Specification and Drawings | 8% |
| Part C | Qualification | 25% |
| Part C | Fabrication | 25% |
| Part C | Inspection | 25% |
| Part C | Reports and Records | 5% |
| Part C | Materials and Design | 5% |
Notice how concentrated Part B is: Welding Inspection and Flaws plus Procedure and Welder Qualifications together account for 62% of that part's minimum allocation. If you're deciding where to spend extra review hours, Part B's heaviest weightings deserve priority since they carry the largest single blocks. AWS's B5.1:2025 update also folds welding and cutting together under a new "Joining and Cutting Processes" heading in Part A, recommended at a minimum of 14% - worth knowing if your terminology references are being updated alongside your codebook.
Part B: The Hands-On Score That Trips People Up
Part B is the part candidates most often underestimate for scoring purposes, because it isn't multiple-choice trivia - it's physical measurement against supplied specifications using real inspection tools and weld replicas. Getting 60% here means consistently and correctly applying measurement technique under time pressure across 46 questions in 120 minutes.
- You're evaluated on reading gauges and tools correctly, not just knowing definitions
- Mistakes compound: a misread caliper early in a question can cascade into a wrong final answer
- AWS explicitly recommends sequencing Part B before Parts A and C - likely because it's logistically separate (paper-based, at AWS-authorized sites, not Prometric) and benefits from being tackled while hands-on skills are fresh
If your weakest area is Part B, spend physical hands-on time with actual inspection tools and weld samples rather than more flashcards. This is one place where a structured study guide focused on practical technique pays off more than reading alone.
Part C: Open-Book Doesn't Mean Easy Points
Part C is open-book against AWS D1.1, which sounds like a relief after two closed-note-adjacent parts. It isn't automatically easier. With 50 scored questions (plus 5 pretest) in 135 minutes, you have roughly 2.5 minutes per scored question - not much time to search a 300-plus-page code if you don't already know where key clauses live.
Practically, this means Part C's 60% threshold is really a test of code navigation speed combined with comprehension of Qualification, Fabrication, and Inspection clauses - the three areas each carrying a 25% minimum allocation. Reports and Records and Materials and Design are lighter at 5% each, but still scored, so don't skip them entirely while tabbing your codebook.
Scheduling Your Prep Around the Score Structure
Because each part is graded separately, your prep calendar should mirror the exam's structure rather than treat the material as one undifferentiated pool. A simple way to think about the weeks leading into your appointment:
Part A Fundamentals Review
- Drill Welding Processes and Definition/Terminology - the two heaviest Part A allocations at 12% each
- Practice closed-book recall since no references are allowed in this part
Part B Hands-On Practice
- Physically practice with gauges, fillet weld gauges, and inspection tools
- Focus disproportionately on Welding Inspection and Flaws (34%) and Procedure/Welder Qualifications (28%)
Part C Code Navigation
- Tab your D1.1 codebook by clause for Qualification, Fabrication, and Inspection
- Time yourself finding answers - remember digital search is disabled
This is the one place in the article where general study methodology matters - the calendar above is only useful because it's mapped directly onto CAWI's three separately-scored parts. For a fuller breakdown of what to study each week, see the CAWI Study Guide for passing on your first attempt, and pair it with practice questions on the main practice test site to check readiness part by part.
Fees, Eligibility, and How Scoring Connects to Registration
Passing score requirements don't exist in a vacuum - they connect directly to what you pay and how you qualify to sit the exam. The 2026 initial fee is $1,255 for AWS members or $1,520 for nonmembers, which includes $120 in Part A/C seat fees. The nonmember price bundles 3 years of AWS Individual Membership, which is worth factoring in if you're comparing costs. A full pricing breakdown, including what's and isn't included, is covered in the CAWI Certification Cost pricing breakdown.
Eligibility to sit the exam runs through several documented paths, including a high school diploma plus 2 years of qualifying experience, eighth grade plus 4 years, or two years of qualifying postsecondary study plus 6 months, among other combinations. Education, employment history, and a recent vision exam must be documented - initial preparation training isn't mandatory, but knowing your specific eligibility route matters before you register. See the CAWI Requirements guide for the complete eligibility breakdown.
It's also worth remembering that CAWI status lasts no more than 3 years and cannot be renewed or recertified - candidates work under CWI or SCWI supervision during that window. Passing all three parts at 60% or higher the first time matters more here than in credentials you can simply retake indefinitely, since the clock on your CAWI status starts the moment you're certified. If you're still deciding whether the credential fits your career path, the ROI analysis on whether CAWI certification is worth it and the CAWI Salary Guide are useful companion reads, and you can benchmark your current knowledge against real exam-style questions on our practice test platform before committing to a testing date.
Frequently Asked Questions
No. AWS requires at least 60% on Part A, at least 60% on Part B, and at least 60% on Part C - each part scored and passed independently. A high score on one part cannot offset a low score on another.
The complete Exam line totals 266 questions: 165 in Part A (150 scored, 15 pretest), 46 in Part B, and 55 in Part C (50 scored, 5 pretest), spread across 390 minutes of active testing time in three separate parts.
AWS recommends taking Part B, the hands-on practical portion, before Parts A and C. Part B is paper-based and administered at AWS-authorized sites, separate from the Prometric-delivered Parts A and C.
Printed bound references are permitted for the open-book Part C, but you must match the codebook edition - D1.1:2025 or D1.1:2020 - to your specific appointment's reference instructions. Digital references are also provided, but digital word search is disabled.
Because each part carries its own 60% requirement, failing any single part means the overall Exam line is not passed, regardless of strong performance on the other two parts. Review the specific domain content for the failed part before retesting.