Which shade number is used for gas welding medium, 1/8 inch to 1/2 inch?

Which shade number is used for gas welding medium, 1/8 inch to 1/2 inch?

• A. 4
• B. 5
• C. 6
• D. 7

Answer: (B)

Choosing the right filter shade protects your eyes from the brightness of the flame while still letting you see the weld pool clearly. For gas welding, the shade you need depends on how bright the flame is. A medium flame, about 1/8 inch to 1/2 inch, is best protected with filter shade five. This shade blocks enough UV and infrared to keep your eyes safe, but isn’t so dark that you can’t see the weld’s details. If you used a lighter shade, like four, you’d risk eye strain or exposure with a medium flame; a darker shade, like six or seven, would make it hard to see the weld properly and slow you down. So, medium gas welding flame calls for shade five.

Choosing the right filter shade protects your eyes from the brightness of the flame while still letting you see the weld pool clearly. For gas welding, the shade you need depends on how bright the flame is. A medium flame, about 1/8 inch to 1/2 inch, is best protected with filter shade five. This shade blocks enough UV and infrared to keep your eyes safe, but isn’t so dark that you can’t see the weld’s details. If you used a lighter shade, like four, you’d risk eye strain or exposure with a medium flame; a darker shade, like six or seven, would make it hard to see the weld properly and slow you down. So, medium gas welding flame calls for shade five.