Exam Name: Welding Inspection And Metallurgy
Certification Provider: API
Corresponding Certification: ICP Programs
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Check Updated on: Oct 14, 2026
No. of Questions: 112 Questions & Answers with Exam Engine
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- Total Questions: 112
- Updated on: Oct 14, 2026
- Price: $69.98
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- Total Questions: 112
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API API-577 Exam Overview:
| Certification Vendor: | American Petroleum Institute (API) |
|---|---|
| Exam Name: | Welding Inspection and Metallurgy Exam |
| Exam Number: | API-577 |
| Related Certifications: | API 653 Aboveground Storage Tank Inspector API 510 Pressure Vessel Inspector API 570 Piping Inspector |
| Exam Price: | $440 USD |
| Available Languages: | English |
| Real Exam Qty: | 110 (100 scored, 10 pre-test) |
| Passing Score: | Scaled score, approximately 70% |
| Exam Format: | Multiple-choice questions, Closed-book exam |
| Exam Duration: | 195 minutes |
| Certificate Validity Period: | 3 years |
| Recommended Training: | API Recommended Training Resources |
| Exam Registration: | API Official Registration |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online remote proctored or in-person at Prometric test centers |
| Pre Condition: | Hold current API 510, 570 or 653 certification; or BS/BE + 1 year experience; or 2-year degree + 2 years experience; or high school + 3 years experience (all within last 10 years) |
| Official Syllabus URL: | https://www.api.org/products-and-services/individual-certification-programs/certifications/api577 |
API API-577 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Welding Processes | 20% | - Common welding processes (SMAW, GTAW, GMAW, FCAW, SAW, etc.) - Process principles, equipment, applications and limitations - Welding parameters and their effects |
| Industry Applications and Standards | 10% | - Refining and petrochemical plant welding requirements - Safety and quality control in welding operations - API RP 577 and related codes/standards |
| Welding Metallurgy | 20% | - Weld defects and metallurgical causes - Phase transformations and cooling rates - Heat-affected zone (HAZ) and microstructure changes - Material properties and classifications |
| Welding Inspection Techniques | 15% | - Non-destructive examination (NDE) methods related to welding - Inspection planning and documentation - Visual inspection methods and criteria - Defect evaluation and acceptance standards |
| Welding Materials and Consumables | 15% | - P-number and F-number assignments - Consumable storage, handling and control - Filler metal classification and selection |
| Welding Procedures and Qualifications | 20% | - Welding Procedure Specification (WPS) - Essential and non-essential variables - Welder performance qualification - Procedure Qualification Record (PQR) |
API-577 Exam FAQ
API Recommended Training Resources: Visit official page
API Official Registration: register for API-577
The package includes 112 practice questions for the API-577 exam, all with verified answers. The same content is available in three formats, so you can switch freely.
The API-577 exam contains 110 (100 scored, 10 pre-test) questions to complete within 195 minutes minutes. Rehearsing under the same limit on the simulator builds calm, automatic pacing.
The PDF reads on phones, tablets, and computers, and it prints cleanly for candidates who like marking notes on paper. The PC file is an interactive simulator that makes rehearsal engaging. The online file is the updated edition of the PC version: intelligent functions, real-test simulation, and no limit on installation devices. All three carry the same questions and answers.
Hold current API 510, 570 or 653 certification; or BS/BE + 1 year experience; or 2-year degree + 2 years experience; or high school + 3 years experience (all within last 10 years)
- Welding Metallurgy (20%)
- Welding Procedures and Qualifications (20%)
- Industry Applications and Standards (10%)
Plan your hours according to each topic's weight.
API-577 requires Scaled score, approximately 70% to pass, and the official exam fee is $440 USD. Fixing both numbers early keeps your practice target and your budget on the same page.
Before you buy, our team answers any question about the API Welding Inspection And Metallurgy material, and the free demo lets you test it. After payment, the files reach your email within seconds, updates follow by email whenever the exam changes, and we protect your personal information throughout. Promotions appear on our homepage from time to time, so regular visitors often buy at a better price.
API Welding Inspection And Metallurgy Sample Questions:
Any electrodes that have become wet:
- A. Should be discarded.
- B. Should be used at a higher amperage than recommended by the manufacturer.
- C. Should be placed in a warming oven only if they are low-hydrogen.
- D. Should not be used for jobs requiring low-hydrogen electrodes.
Correct Answer: D 🗳️
One of the main differences between welding nickel alloys and austenitic stainless steels is that with nickel alloys:
- A. There is less susceptibility to lack of fusion.
- B. There is less susceptibility to cracking from contaminants.
- C. The weld pool tends to be sluggish.
- D. Interpass temperature control is not needed.
Correct Answer: C 🗳️
Refer to the following diagram:
Item#1 represents:
- A. root opening.
- B. root weld size.
- C. root face.
- D. groove weld size.
Correct Answer: A 🗳️
Filler metals are grouped according to their A-numbers to:
- A. Define the welding characteristics.
- B. Minimize the number of welding procedure qualifications.
- C. Designate similar chemical compositions.
- D. Minimize the number of performance qualifications.
Correct Answer: C 🗳️
If a nonessential variable is changed on a WPS, which of the following actions must occur?
- A. Impact testing must be performed at the discretion of the welding engineer.
- B. It may be changed on the WPS without requalifying the welding procedure.
- C. The welding inspector can simply make the change on the WPS and initial as proof of acceptance.
- D. The welding procedure will need to be requalified by performing mechanical testing.
Correct Answer: B 🗳️
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