TIG Welding Practice Test

The TIG Welding Practice Test is a free intermediate-level, 20-minute skill test from Science of Apps. It tests gas tungsten arc welding (GTAW, TIG) knowledge — tungsten, current and equipment, shielding gas and preparation, technique for steel, stainless and aluminium, and defects, inspection and safety — written to American Welding Society guidance, AWS A5.12 tungsten classification, AWS D1.1 and D17.1 practice and ANSI Z49.1 safety for 2026. Follow your WPS and equipment maker's data on the job. Score 70% or more on its 20 questions to earn a verifiable TIG Welding Readiness certificate (SOA-TIGW). Every question is based on published standards and research — including American Welding Society (AWS), AWS safety and health fact sheets (with ANSI Z49.1 Safety in Welding, Cutting and Allied Processes) (American Welding Society), Certified Welding Inspector (CWI) and AWS QC1 (American Welding Society) — and each answer is explained with its source.

Yes. Science of Apps has a free TIG Welding Practice Test built on the current exam outline for 2026 and 2027. It covers tungsten, current and equipment, shielding gas and preparation, technique by material and defects, inspection and safety, scores you instantly and issues a verifiable certificate.

Read the four skill areas on this page, then take the 20-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a TIG Welding Readiness certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: American Welding Society (AWS); AWS safety and health fact sheets (with ANSI Z49.1 Safety in Welding, Cutting and Allied Processes) (American Welding Society); Certified Welding Inspector (CWI) and AWS QC1 (American Welding Society); Welding, cutting and brazing (OSHA). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Four skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: Tungsten, Current and Equipment (Electrodes, Polarity and Machine settings); Shielding Gas and Preparation (Gas, Cleaning and Fit-up); Technique by Material (Torch, Filler and Heat control); Defects, Inspection and Safety (Discontinuities, Testing and PPE). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

TIG welder, Pipe or stainless welder, Aerospace or precision welder, Welding apprentice and Fabrication technician. It suits anyone who wants a quick, verifiable way to show TIG Welding knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

TIG welding, or gas tungsten arc welding (GTAW), uses a non-consumable tungsten electrode and an inert shielding gas, usually argon. Filler metal is added by hand when needed. It gives precise, clean welds on thin metals, stainless steel and aluminium, but is slower than MIG or stick.

Aluminium has a tough oxide layer that melts at a much higher temperature than the metal. The electrode-positive half of the AC cycle breaks up that oxide (cleaning action), while the electrode-negative half puts heat into the work.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

20 questions — 5 from each of 4 skill areas — with a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

We rate it Intermediate: assumes hands-on experience in the role. It has 20 scenario questions — 5 from each of 4 skill areas — and a 20-minute limit. You need 70% (14 of 20) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.