Your Complete Guide to Welder Certifications and Qualification Tests

Some welders walk onto a jobsite with years of informal torch time and no test records; others carry code-specific qualification records that clear them for structural steel, pressure vessels, and pipelines.

That distinction matters because employers, inspectors, and project owners do not treat welder certification as a universal license. An AWS D1.1, ASME Section IX, or API 1104 qualification only covers the positions, processes such as MIG Welding, and thickness ranges shown on the test record.

The Bureau of Labor Statistics projects about 40,300 openings for welders, cutters, solderers, and brazers each year through 2033, and in a welder career, the highest-paying structural and pipe work often requires documented plate or pipe position tests. A 3G plate test will not qualify you for a 6G pipe joint, and continuity rules, not a fixed expiration date, keep that qualification alive.

What Is a Welder Certification? AWS D1.1, ASME Section IX, and API 1104

A welder certification is a qualification record, not a state-issued license. It proves that a welder can deposit sound welds within the limits of a specific welding code and set of test variables. The three codes most often required by employers are AWS D1.1 for structural steel, ASME Section IX for pressure vessels and boilers, and API 1104 for pipelines.

Plate Welding Certification Positions and Qualification Ranges (1G, 2G, 3G, 4G)

The table below summarizes common AWS D1.1 plate groove test positions and what each test qualifies a welder to perform. Thinner test plates typically qualify from 1/8 in to twice the tested thickness, while a 1 in or thicker plate often qualifies to unlimited thickness. ASME Section IX uses similar position names and thickness qualification rules based on coupon thickness T, but this table focuses on AWS D1.1 structural plate tests.

Pipe Welding Certification Positions and Qualification Ranges (1G, 2G, 5G, 6G, 6GR)

Pipe qualification ranges depend on the welding code and coupon details, so the table below summarizes position coverage rather than universal diameter and wall thickness limits. Exact outside-diameter and wall-thickness ranges must be confirmed against the specific AWS D1.1, ASME Section IX, or API 1104 edition used for your test. A plate groove test may qualify pipe or box tubing 24 in. and larger under some AWS D1.1 guidance, but small-diameter pipe rules are more restrictive and vary by code.

How Welder Qualification Tests Are Graded: Visual Inspection, Bend Tests, and NDT

Every qualification test starts with a visual inspection before anything gets destroyed or radiographed. The inspector checks for cracks (an automatic failure under any code), incomplete fusion, lack of penetration, excessive undercut, porosity, and overall weld profile. Under AWS D1.1's 2025 edition, undercut and surface discontinuities must fall within specific limits, and any crack anywhere in the weld ends the test on the spot¹.

Guided Bend Tests

If the weld passes visually, destructive weld testing begins: coupons are cut and bent (face, root, or side bends depending on thickness and process) around a specified die radius. AWS D1.1 allows no open discontinuity greater than 1/8 inch (3 mm) in any direction on the convex surface of the bent specimen¹, with a combined total discontinuity limit of 3/8 inch (10 mm). A crack is tolerated up to 1/4 inch (6 mm), but if that crack originated from slag or incomplete fusion, the limit drops to 1/8 inch (3 mm). ASME Section IX uses a nearly identical 1/8 inch (3.2 mm) threshold⁴, and generally disregards corner cracks unless there's clear evidence they came from lack of fusion or a trapped inclusion⁴.

Radiographic and Ultrasonic Testing

Code-specific qualifications, especially under ASME Section IX and API 1104, often substitute radiography (RT) for bend testing. Cracks and incomplete fusion are automatically rejected under both codes⁵. AWS D1.1 caps rounded indications at roughly one-third of the material thickness, not exceeding 1/4 inch (6 mm), or up to 3/8 inch (10 mm) on thicker sections over 2 inches. Elongated slag inclusions have their own tighter limits, particularly on thinner material⁵. Ultrasonic testing (UT) is common in production inspection but is not a general substitute for RT in Section IX welder performance qualification, so don't assume it applies to every certification path.

Common Failure Modes and Retesting

Most failures trace back to a short list: cracks, incomplete fusion or penetration, excessive undercut, porosity, slag inclusions, and burn-through (the last one especially common on open-root 6G pipe tests judged under API 1104)⁶. When a specimen fails, codes require a genuine retest, not a repair of the failed weld⁷. Depending on the governing code and the reason for failure, that may mean welding two new consecutive test coupons or returning for additional practice before scheduling another sitting. Repairing and resubmitting the same failed coupon is never acceptable under any major code⁷.

How Much Does a Welding Certification Cost in 2026?

Certification cost varies more by facility than by any other single factor, since the American Welding Society sets application fees nationally but leaves test fees entirely up to the accredited site running your booth. There is no single sticker price for a 3G weld test or 6G test, only a range shaped by where you sit for it.

The Baseline Fees

Every AWS Certified Welder applicant pays a $70 application fee¹, and if you skip the online portal and submit paperwork manually, add a $125 non-refundable processing fee on top. Those charges go to AWS regardless of location. The test itself is priced by the facility, and a typical single-position test (one plate or pipe position, one process) runs $255 to $310² depending on the code (D1.1 versus D1.5) and coupon type, whether it is limited thickness with backing or open root unlimited thickness. Each additional position tacks on another $145 to $210² per welder.

What Actually Shows Up on the Invoice

A realistic all-in total blends four line items: the application fee, the position test fee, any facility or booth fee, and sometimes a materials or coupon charge if you're supplying your own plate or pipe. Put together, most candidates land between $325 and $600 for a straightforward single-position AWS Certified Welder test. Facilities that bill by the hour, common at some private test centers, charge around $85 per hour of booth time, with high schools sometimes getting a discounted $40 hourly rate through partner programs².

Comparing Where You Test

• Community colleges: Often the cheapest route since facility fees are subsidized by the program, and students may already have practice coupons included in tuition.
• Private AWS Accredited Test Facilities: Fastest scheduling and walk-in availability, but you pay full market rate for booth time and materials with no institutional discount.
• Union training programs: Testing is frequently bundled into apprenticeship costs or offered at reduced rates for members, though access is limited to those enrolled in the local.

Retests and Bundling

A failed test almost always costs the same as the original attempt since the facility incurs the same booth time and material cost either way. Some centers offer a modest discount if you retest the same day or within a short window. Testing multiple positions in one visit, say 3G and 4G weld test together, usually costs less per position than scheduling them separately, since the facility fee and setup are shared across both attempts.

How Long Does a Welding Certification Last? Continuity and Expiration Rules

The current shift in welder qualification is away from fixed expiration dates and toward documented, continuous process use. Under AWS D1.1, ASME Section IX, and API 1104, a performance qualification does not carry a fixed expiration date the way a license or permit often does. Instead, it stays valid only while the welder maintains continuity in the qualified process, typically by using that process at least once in every consecutive six-month period.¹

The Six-Month Continuity Rule

AWS D1.1 and ASME Section IX both use a six-month inactivity limit. ASME Section IX states the requirement in QW-322.1.² API 1104 follows the same six-month continuity concept in common practice, though the project specification should always be checked. The clock runs from documented process use, not from the original test date, so each qualified process must be used at least once within any six-month window. Continuity is per process, not per welder. A welder qualified in both SMAW (Stick Welding) and FCAW (flux cored arc welding) who only runs SMAW for eight months has allowed the FCAW qualification to lapse, even if overall welding work continued.³

What Belongs in a Continuity Log

A continuity log documents uninterrupted use so an employer can show the qualification stayed active. The essential entries include: - Date: when each qualifying production weld or code-recognized use occurred. - Process: which qualified welding process was used. - Traceability: enough job, WPS, or production information to connect the weld to the qualification.

The log may be a simple table or job record. Its purpose is evidence, not guesswork. A log cannot restore a lapsed qualification; it only records history.

When a Qualification Lapses

If a welder goes more than six months without using a qualified process, that process lapses.³ Retesting is then required before production welding resumes in that process. A new performance qualification test, witnessed and documented under the governing code, is the standard path back.⁵ Retesting may also be required when work falls outside the existing qualification range, when an employer or authority having jurisdiction requires it, or when there is specific reason to question ability. A certification can therefore remain active for years without retesting as long as continuity is maintained, but it can lapse immediately once the six-month window is missed.³

Welder Licensing by State: Is Certification Legally Required?

The Short Answer: No National Welder License

There is no single national welder license, and most states do not require an individual welder license for welding jobs. For the majority of welders, the gate is not a state agency. It is an employer or contractor who asks you to pass a qualification test for the specific welding processes, positions, materials, thicknesses, and codes the job requires. In practical terms, a welding certification is proof of code compliance, not a government-issued permission slip. A welder qualification is a job-specific credential, not a permanent professional right to weld everywhere.

Where State or Local Rules Do Apply

A small number of states have additional requirements for certain welding work. Alabama, California, and Connecticut have state-level welder licensing requirements, but the rules are specific and not always a general license for every welder. California's requirements lean toward pressure-vessel work and Cal/OSHA oversight. Connecticut's rules may apply only to regulated construction or pressure equipment. Alabama requires a state welder license, so always verify with the state board or local building department before relying on a single list.

Local codes can also matter. New York City requires structural welders to hold a NYC Department of Buildings certification. Wisconsin requires AWS-qualified welders on state-funded structural work. Texas has no state welder license, but many employers ask for AWS D1.1 qualifications. Ohio has no individual welder license, but pressure-vessel work commonly requires ASME qualification.

The Practical Path: Qualification Tests

For structural steel, AWS D1.1 is the most common qualification standard. For pressure vessels and boilers, ASME Section IX applies. For pipelines, API 1104 is typical. Passing one of these tests does not make you licensed everywhere; it demonstrates that you can meet code requirements for a specific scope of work. Always ask your employer which code or position you need to test for, because coverage is limited to what you actually welded during the test.

If You Run a Welding Business

Individual welder certification and business licensing are separate. If you're starting a welding business, you may need a state or local contractor license, insurance, and permits. Check your city and county rules before bidding work.

How to Find an AWS Accredited Test Facility Near You

AWS Certified Welder tests are conducted at Accredited Test Facilities (ATFs) worldwide, and you must schedule directly with an ATF representative, not with AWS itself. That single detail shapes the whole process: your first stop is finding the right facility, then working with its staff to book the exact test you need.

Search the ATF Directory

Start with the AWS ATF directory on aws.org, which you can search by city and state or by ZIP code (for example, "Miami, FL" or a nearby ZIP). The listings cover both domestic and international facilities. If several ATFs appear, compare their phone numbers, jurisdictions, and locations before you commit. Some listings are specialized by region or program type, so an ATF near you may not administer the specific test you want. Before you read further, download and review AWS QC47, the required reading for the Certified Welder program.

Contact the Facility and Confirm the Test

Call the ATF representative directly to ask about available test dates, test types, and fees. Confirm the specifics before booking , whether you need a 3G MIG welding test, a 3G FCAW weld test, or another welding process and position , plus material, thickness, and the code or qualification rule the facility can test under. The ATF, not AWS's public page, tells you what it supports. Ask what to bring as well, since each facility sets its own requirements. Plan on a government-issued ID, your welding gear, and any previous qualification records that may be relevant. Sort out pre-test paperwork and payment before test day.

Test Day and Results

Many facilities offer both scheduled appointments and walk-in slots, and if you do not pass, retesting can often be arranged within days. On test day you deposit a weld inspected by an AWS Certified Welding Inspector (CWI), and the facility evaluates it against AWS requirements. After you pass, the ATF forwards your application, qualifications test record, and payment to AWS. You can typically expect digital credential access by email roughly two to three weeks after AWS receives the paperwork, though timing varies with the ATF's submission schedule.

Welder Salaries by Metro Area: Where Certification Pays Off

The table below shows median annual wages and total employment for welders, cutters, solderers, and brazers in the largest U.S. metro areas, based on 2025 Occupational Employment and Wage Statistics data from the Bureau of Labor Statistics. The five highest-paying metros for median welder pay are Baton Rouge, LA ($78,170); Virginia Beach-Chesapeake-Norfolk, VA-NC ($62,670); Minneapolis-St. Paul-Bloomington, MN-WI ($61,880); New York-Newark-Jersey City, NY-NJ ($61,680); and Philadelphia-Camden-Wilmington, PA-NJ-DE-MD ($58,380). Houston-Pasadena-The Woodlands, TX leads in total welder employment (15,850), so pay and job volume do not always align; consider both local demand and wages when choosing where to certify and work.

Top-Paying Metro Area for Welders

Among metro areas in the latest BLS data, Baton Rouge, LA has the highest median annual wage for welders, cutters, solderers, and brazers.

Welder Certification FAQs

Certification rules vary by code, employer, and project. These answers give you a practical starting point before you contact a test facility.

Is a welder certification legally required, or does it depend on the state and employer?

No single welder license covers all states. Requirements depend on state, project, code, and employer. New Jersey, for example, does not currently require a state occupational license for welders¹, while the NCDOT Field Welder Certification Program certifies welders who work on North Carolina bridge projects. Even where no state license applies, employers often require a code-specific qualification such as AWS D1.1, ASME Section IX, or API 1104.

What does a 3G welding certification qualify you to weld?

Under common AWS D1.1 interpretations, a 3G vertical groove plate certification qualifies you to weld 1G, 2G, and 3G groove welds and 1F, 2F, and 3F fillet welds on plate.⁵ It does not qualify 4G overhead welding by itself; a separate 4G test or combined 3G/4G test is generally needed.⁶ The exact range also depends on process, thickness, backing, and other code variables.

How much does a welding certification cost?

There is no single national price. Published 2026 examples show practical exam fees around $300 for a single-position plate test, $400 for a multiple-position plate test, and $450 for a single-position pipe test.² AWS application and annual maintenance fees may add $70 and $105. Some facilities also add processing, registration, WPS, or retest fees.³ Contact the test facility for an all-inclusive quote.

How long does a welding certification last?

An AWS Certified Welder is generally maintained by continuity rather than a universal expiration date. Under AWS D1.1 continuity, you typically need to document welding in each qualified process at least once every six months.⁴ If you do not maintain continuity, the qualification can lapse and you may need to requalify. Some employers or projects impose shorter renewal windows.

What is the difference between AWS D1.1 and ASME Section IX?

They are not interchangeable. The AWS D1.1 Structural Welding Code covers structural steel welding, while ASME Section IX governs ASME-regulated boilers and pressure vessels.³ Passing one does not satisfy the other, and the owner, employer, or governing code determines which qualification is required for the work.

Where can I take a welder qualification test near me?

Choose an AWS Accredited Test Facility. Many community colleges, union training centers, and commercial test labs schedule welder qualification tests, and some employers test in house. To find an option nearby, search for AWS Accredited Test Facility locations or browse Welding Schools By State to contact a local welding school and ask which codes and positions they test.