Certified Welder Cheat Sheet 2026

The 30 highest-yield Certified Welder facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the primary function of shielding gas in arc welding? → Protect the weld area from contaminants
2. How does peening a weld bead between passes help control distortion? → It stretches the weld metal to counteract contraction stresses
3. Before starting any welding task, what must always be checked? → If the area and equipment are safe
4. What is the primary effect of increasing the carbon content in a steel base metal on its weldability? → It increases hardness and strength, making it more susceptible to cracking.
5. When performing Gas Tungsten Arc Welding (GTAW) on aluminum, which type of current and tungsten electrode tip preparation is most commonly recommended? → AC with a balled tip
6. Which type of distortion is caused by unequal transverse shrinkage through the thickness of a weld joint? → Angular distortion
7. Which welding technique deposits short weld segments in the opposite direction of the overall welding progression? → Backstep welding
8. What does AWS D1.1 primarily cover? → Structural welding of steel
9. Which process is often used in heavy construction and uses a flux core wire? → FCAW
10. Residual stresses in weldments are primarily caused by: → Differential thermal expansion and contraction during welding and cooling
11. In the AWS classification E7018 for a shielded metal arc welding (SMAW) electrode, what does the '1' signify? → The welding position capability.
12. What does interpass temperature refer to in a multi-pass weld? → The temperature of the weld bead before the next pass is deposited
13. A welder is reviewing a blueprint and sees a circle at the junction of the arrow and the reference line on a welding symbol. What does this circle indicate? → The weld is to be made all around the joint.
14. Which technique is ideal for high-precision welds on thin materials? → TIG welding
15. A blueprint calls for a V-groove weld. Information such as the required groove angle and root opening would be found: → As part of the weld symbol on the reference line.
16. Which standard outlines welder qualification procedures? → AWS B2.1
17. On a standard welding blueprint, what does a symbol placed below the reference line signify? → The weld should be made on the 'arrow side' of the joint.
18. What is the most common joint used in structural welding? → T-joint
19. What is the primary purpose of a Welder Performance Qualification (WPQ) test? → To verify a welder's ability to produce a sound weld by following a qualified WPS.
20. Which distortion control method physically prevents movement by holding parts rigidly during welding? → Restraint and fixturing
21. Which fire extinguisher type is most suitable for welding areas? → Class C or ABC
22. What type of current is typically used for TIG welding on aluminum? → AC
23. A welding symbol includes the letters 'G' and 'M' above the contour symbol. What do these finishing symbols indicate? → The weld must be ground and then machined.
24. Which of the following welding processes uses a non-consumable electrode? → Gas Tungsten Arc Welding (GTAW)
25. Which document provides visual criteria for weld acceptability? → AWS D1.1
26. When voltage and travel speed are held constant in GMAW, which parameter most directly controls heat input? → Wire feed speed (which controls amperage)
27. What is the main characteristic of a groove weld? → They fill a groove between two members
28. What is the purpose of using a welding curtain in a workshop? → To shield from arc light and sparks
29. Which of the following contaminants on a base metal is most likely to cause weld porosity if not properly removed? → Moisture, oil, or grease
30. Alternating weld passes on both sides of a joint to equalize shrinkage forces is known as: → Balanced welding