Welder Red Seal · Question
Which of the following materials, when welded, is known to produce hexavalent chromium (Cr(VI)) fumes, a known carcinogen requiring special respiratory and ventilation controls?
Stainless steels contain chromium as a primary alloying element. The high heat of the welding arc converts some of this chromium into its hazardous hexavalent s
Start free practice for Welder Red Seal
154 questions · no signup required · 40 free questions per day
Question: Which of the following materials, when welded, is known to produce hexavalent chromium (Cr(VI)) fumes, a known carcinogen requiring special respiratory and ventilation controls?
Answer options:
- Low carbon steel
- 6061 Aluminum ✅ 304L Stainless steel
- Grade 40 Cast iron
Correct answer: 304L Stainless steel
Explanation: Stainless steels contain chromium as a primary alloying element. The high heat of the welding arc converts some of this chromium into its hazardous hexavalent state, which becomes airborne in the welding fume. This necessitates enhanced safety precautions.
Start free practice for Welder Red Seal
154 questions · no signup required · 40 free questions per day
More about Welder Red Seal
Related Questions
- A welder is fabricating a pressure vessel component using FCAW-G with an E70T-1 wire. The procedure specifies
- A welder is preparing to weld 20 mm (0.8 in) thick high-strength low-alloy (HSLA) steel using FCAW-G. The weld
- A structural steel fabricator is using FCAW-S (E71T-8 wire) to weld heavy sections of structural steel in an o
- When performing FCAW-G (gas-shielded flux-cored arc welding), a welder notices the arc is unstable and the wir
- A structural welder is performing overhead FCAW-G on 12 mm (0.5 in) thick steel with an E71T-1 wire. The weld
- A welder is setting up an FCAW-S machine for welding in a remote location without access to external shielding
More for Welder Red Seal candidates
Practice tests
Question explanations
- A welder is fabricating a pressure vessel component using FCAW-G with an E70T-1 wire. The procedure specifies
- A welder is preparing to weld 20 mm (0.8 in) thick high-strength low-alloy (HSLA) steel using FCAW-G. The weld
- A structural steel fabricator is using FCAW-S (E71T-8 wire) to weld heavy sections of structural steel in an o
- When performing FCAW-G (gas-shielded flux-cored arc welding), a welder notices the arc is unstable and the wir
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Welder Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.