SAW Study Guide 2026
Everything you need to pass the SAW exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 SAW Exam Format at a Glance
📚 SAW Topics to Study (15)
✍️ Sample SAW Questions & Answers
1. Which non-destructive test is commonly used to detect internal weld defects?
Radiographic testing (RT), which uses X-rays or gamma rays, is a widely used non-destructive test method for detecting internal weld defects. It can reveal subsurface discontinuities such as porosity, slag inclusions, lack of fusion, and cracks by producing an image of the weld's internal structure on film or a digital detector. This allows for thorough inspection without damaging the part.
2. What is the primary reason for using a metal-cored (composite) SAW wire electrode instead of a solid wire?
Metal-cored wires contain metallic powder fills that increase melt-off rate and allow alloying additions (Ni, Cr, Mo) that cannot be economically drawn into solid wire form, enabling precise weld metal chemistry control.
3. In the AWS A5.17 flux-wire classification 'F7A2-EM12K', what does the 'F7' prefix indicate about the weld deposit?
In AWS A5.17, 'F7' designates a flux that, when used with the specified wire, produces weld metal with a minimum 70,000 psi tensile strength; the number represents tensile strength in multiples of 10,000 psi.
4. Why is documentation important in SAW technology?
Documentation captures configurations and procedures, enabling knowledge transfer and continuity regardless of staff changes.
5. What is the result of incorrect travel angle during SAW?
The travel angle, or electrode angle, in SAW significantly affects the distribution of heat and the flow of molten metal. An incorrect travel angle can lead to an uneven weld bead profile, where one side might have insufficient fusion or an irregular shape. It can also cause lack of fusion, especially on the leading or trailing edge, compromising the weld's integrity and strength.
6. Which element is often added to improve weld metal toughness?
Manganese is a common alloying element added to weld metal to improve its mechanical properties, particularly toughness and strength. It acts as a deoxidizer and desulfurizer, helping to remove impurities that can lead to brittleness. By controlling the microstructure and reducing harmful inclusions, manganese enhances the weld's resistance to cracking and impact.