Two-Part Examination Process
The AWS Certified Welder test layout is bifurcated into two distinct phases: the written knowledge exam and the Practical Performance Qualification (PPQ). This structure ensures that a welder’s competency is not just limited to "spark-time" but extends to the underlying principles of metallurgy and structural integrity. The written portion serves as the theoretical foundation, while the practical portion functions as the physical validation of those theories. In the industry, this is often referred to as a "performance-based" certification, meaning the credential is tied directly to the specific welding process, position, and material used during the test. Failure to grasp the relationship between these two sections can lead to a disconnect during preparation, as the written exam often tests the "why" behind the actions performed in the welding booth.
Core Objectives of Each Test Section
The primary objective of the written examination is to assess a candidate's literacy regarding the Welding Procedure Specification (WPS). This document is the blueprint for any certified weld, outlining variables like voltage, amperage, and travel speed. The exam tests whether a candidate can identify non-conformities and safety hazards that could lead to catastrophic structural failure. Conversely, the PPQ focuses on the execution of these variables. The objective here is to produce a weldment that meets the acceptance criteria of a specific code, such as AWS D1.1 (Structural Steel) or AWS D1.2 (Aluminum). Scoring in the practical section is binary—pass or fail—based on whether the test coupon survives visual inspection and subsequent mechanical testing, such as a bend test or radiographic examination.
Sequential Testing Requirements
Understanding the AWS welder test sections breakdown requires recognizing the mandatory sequence of events. Candidates are generally required to successfully challenge the written examination before they are permitted to move forward with the hands-on performance test. This sequence is established because the safety knowledge verified in the written exam is considered a prerequisite for operating in a high-stakes testing environment. If a candidate cannot demonstrate an understanding of fire prevention, cylinder handling, and PPE requirements through the written test, they are deemed a risk in the practical lab. This sequential gatekeeping ensures that only those with a verified safety and theoretical foundation proceed to the more resource-intensive practical evaluation phase.
Detailed Breakdown of the Written Examination
Question Types and Content Domains
The Welder certification written exam structure consists primarily of multiple-choice and true/false questions. These questions are meticulously mapped to several content domains, including welding safety, symbols, joint geometry, and metallurgy. For instance, a candidate might be asked to identify the correct shade of filter lens for a specific amperage range or to interpret a weld symbol to determine the required leg length of a fillet weld. A significant portion of the test focuses on the Standard Welding Terms and Definitions (AWS A3.0). Precision in terminology is vital; the exam will distinguish between subtle concepts like "porosity" and "inclusion," or "undercut" and "underfill," requiring the candidate to understand the specific cause and remedy for each defect type.
Standard Time Allotment and Pacing
When considering how long is the AWS Welder exam, candidates should prepare for a 2-hour window for the written portion. This time limit is designed to test not only knowledge but also the ability to retrieve information efficiently. With approximately 60 to 100 questions usually making up the bank, a candidate has roughly 72 to 120 seconds per question. This pacing requires a high level of familiarity with the material; there is no time for second-guessing basic concepts like the difference between AC and DCEN (Direct Current Electrode Negative) polarity. Effective pacing involves answering the definitive questions first and returning to complex scenario-based questions—such as those involving the calculation of heat input—during the final 30 minutes of the session.
Exam Delivery Methods (In-Person vs. Remote)
AWS offers flexibility in how the written exam is delivered, providing options for both in-person testing at an Accredited Testing Facility (ATF) and remote proctoring. In-person testing occurs in a controlled computer lab environment where the testing software locks down the terminal to prevent unauthorized access to external data. Remote proctoring uses a candidate’s webcam and microphone to monitor the testing environment, ensuring compliance with closed-book rules. Regardless of the method, the exam remains a Proctored Examination, meaning an invigilator is always present to verify identity and maintain the integrity of the test. Candidates choosing the remote option must ensure their hardware meets specific latency and resolution requirements to avoid technical disqualification during the session.
Required Welding Processes and Positions
The practical welding exam format AWS uses is highly specific to the certification sought. A candidate does not just "pass the test"; they qualify in a specific process such as SMAW (Shielded Metal Arc Welding), GMAW (Gas Metal Arc Welding), or GTAW (Gas Tungsten Arc Welding). Furthermore, the test is conducted in specific positions (1G, 2G, 3G, 4G for plate; 1G, 2G, 5G, 6G for pipe). For example, a welder seeking an "all-position" qualification on plate would typically test in the 3G (vertical) and 4G (overhead) positions. Successfully passing a test in a more difficult position often qualifies the welder for less difficult positions automatically, a concept known as the Range of Qualification.
Test Coupon Preparation and Parameters
The preparation of the test coupon is as much a part of the exam as the welding itself. Candidates are provided with base metal—typically carbon steel, aluminum, or stainless steel—and must prepare the edges according to the WPS. This might involve grinding a 30-degree bevel to create a 60-degree included angle for a V-groove weld. The Root Opening and Root Face (land) must be within the tolerances specified in the procedure. During the test, the candidate must manage the interpass temperature, ensuring the metal does not become too hot, which could degrade the mechanical properties of the Heat Affected Zone (HAZ). Failure to stay within the specified amperage or voltage ranges listed on the WPS can result in immediate disqualification.
Role of the Welding Inspector During Testing
Throughout the PPQ, a Certified Welding Inspector (CWI) monitors the process. The CWI’s role is to ensure that the candidate follows the WPS to the letter. This includes verifying the "tack welds," inspecting the "root pass" for complete penetration, and observing the "final cap" for aesthetic and structural integrity. The CWI looks for specific defects such as overlap, excessive reinforcement, or surface cracks. After the welding is complete, the CWI may perform a Guided Bend Test, where the specimen is placed in a machine and bent 180 degrees. If the specimen develops a crack larger than the allowable limit (typically 1/8 inch), the candidate fails the exam, regardless of how well they performed on the written section.
Scheduling and Test Center Logistics
Finding an AWS-Accredited Testing Facility
All practical exams must be conducted at an AWS Accredited Testing Facility (ATF). These facilities have undergone a rigorous audit by the AWS to ensure their equipment, material sourcing, and inspection personnel meet national standards. Using the AWS locator tool, candidates can find ATFs that specialize in specific industries, such as aerospace or structural steel. It is important to note that not all ATFs offer every welding process. A candidate must verify that the facility has the specific power sources and shielding gas setups required for their chosen process, such as high-frequency start for GTAW on aluminum or specialized wire feeders for FCAW (Flux-Cored Arc Welding).
How to Register for Each Exam Section
Registration is a multi-step process that begins with the submission of an AWS Welder Application. Candidates must document their work history or vocational training to prove eligibility. Once the application is approved, the candidate receives an authorization to test. The written exam is often scheduled through a third-party testing partner, while the practical exam is scheduled directly with the ATF. It is a common mistake to assume a single registration covers both; in reality, the Practical Performance Qualification requires separate coordination with the facility manager to ensure a booth and an inspector are available. Fees are also typically split between the AWS national office and the local testing facility.
What to Bring on Exam Day
On the day of the written exam, a candidate needs only valid government-issued identification and their confirmation notice. However, the practical exam day requires a full suite of professional tools. This includes a welding helmet with the correct shade, fire-resistant (FR) clothing, leather gloves, and steel-toed boots. Candidates should also bring their own basic hand tools: a chipping hammer, wire brush, and grinders, although some facilities provide these. Crucially, the candidate should bring a copy of the Welding Procedure Specification they intend to follow. While the ATF provides the material (coupons), the welder is responsible for their own personal protective equipment (PPE) and ensuring it meets ANSI Z49.1 safety standards.
Studying for Knowledge-Based Written Questions
Preparation for the written exam should center on the AWS SENSE (Schools Excelling through National Skill Standards Education) curriculum or the AWS Welding Handbook. Candidates must move beyond memorization and practice applying concepts. For instance, instead of just knowing that hydrogen causes cracking, a candidate should understand that using a low-hydrogen electrode (like E7018) requires proper storage in a rod oven to maintain its integrity. Studying should also involve heavy use of practice exams that mimic the 2-hour time constraint. Focus on learning to read weld symbols quickly, as these are often the most time-consuming questions on the test due to the multiple pieces of information (pitch, length, contour) embedded in a single icon.
Practicing Hands-On Skills for the PPQ
For the practical section, "muscle memory" is the goal. Candidates should practice on the exact thickness and type of material specified in the test. If the test uses 3/8-inch plate with a backing bar, practicing on open-root pipe will not be as effective. A key strategy is to perform a "mock test" under the supervision of a mentor who can act as a CWI. This includes practicing the Restart Technique, where a welder must stop in the middle of a pass and restart without leaving a crater or lack of fusion. In the PPQ, a poor restart is one of the most common reasons for failing a bend test, as it creates a stress riser where the metal is likely to fracture.
Time Management Techniques for Both Sections
Time management in the booth is just as critical as it is during the written exam. During the PPQ, candidates often rush the cleaning process between passes, leading to Slag Inclusion. A successful candidate allocates time for cooling and meticulous cleaning with a wire wheel. In the written exam, the strategy should be to move through the "General Knowledge" section quickly to save time for the "Code Clinic" or "Specification" questions that require looking up data or performing calculations. Using the "mark for review" feature on computer-based tests allows the candidate to maintain momentum without getting bogged down by a single difficult question regarding obscure metallurgical phases like Martensite or Austenite.
Post-Exam Procedures and Next Steps
Understanding Your Preliminary Score Report
At the conclusion of the written exam, candidates typically receive a preliminary score report. This report breaks down performance by topic area, such as "Safety" or "Cutting Processes." It is important to remember that this score is preliminary until verified by the AWS. The passing score is generally 75%, though this can vary slightly depending on the specific certification path. If a candidate fails, this report is an invaluable diagnostic tool, showing exactly which theoretical areas need more study. For the practical exam, the report is usually immediate: the CWI will inform the candidate if the coupons passed visual inspection and will later provide the results of the Destructive Testing.
What Happens After You Pass the Written Exam
Once the written exam is passed, the AWS issues a notice of eligibility for the practical portion. This document is the "green light" to schedule the PPQ at an ATF. It is vital to schedule the practical test while the theoretical knowledge is still fresh, as the two are intrinsically linked. Passing the written exam also grants the candidate a certain level of professional standing, often allowing them to work as a "welder trainee" or "apprentice" in some jurisdictions while they wait to complete their performance qualification. The data from the written pass is entered into the AWS National Registry, which employers use to verify the credentials of potential hires.
Scheduling Your Practical Test After Eligibility
After receiving eligibility, the candidate must contact their chosen ATF to book a testing booth. This should be done well in advance, as ATFs often have waiting lists for performance tests. When scheduling, the candidate must specify the Standard Welding Procedure Specification (SWPS) or the company-specific WPS they will be using. This allows the facility to prepare the correct base metals and filler materials (electrodes/wire). Once the practical test is passed, the ATF submits the paperwork to the AWS, and the official "Certified Welder" card is mailed to the candidate. This certification must be maintained through a "Maintenance of Certification" form submitted every six months to prove the welder is still active in the process.