What is the minimum temperature that the joint must be at before welding can begin?
A) 70°F (21°C)
B) 60°F (15°C)
C) 50°F (10°C)
D) 40°F (4°C)

Question

​What is the minimum temperature that the joint must be at before welding can begin?
A) ​70°F (21°C)
B) ​60°F (15°C)
C) ​50°F (10°C)
D) ​40°F (4°C)

Quizplus · Accepted Answer

The American Welding Society (AWS) recommends a minimum preheating temperature of 50°F (10°C) before welding can begin. This helps to prevent the formation of brittle welds and reduces the risk of hydrogen cracking. Welding should not be performed if the joint is below this temperature.

​What Is the Minimum Temperature That the Joint Must Be

What Is the Minimum Temperature That the Joint Must Be