In W47.1, what does S classification signify?

In W47.1, what does S classification signify?

• A. This category corresponds to specific weld geometry (groove weld dimensions) in welder qualification.
• B. It means 'Special' welding only.
• C. It refers to 'surface' finishing.
• D. It indicates 'spot' welding only.

Answer: (A)

In this standard, the S designation is tied to the weld joint geometry used in welder qualification. Specifically, it indicates a groove weld with defined dimensions and shapes that the welder must demonstrate capability to produce to the required quality. The emphasis is on being qualified for that particular groove geometry, not on surface finish, spot welding, or a generic “special” category. So the S category marks qualification for a specific groove weld geometry (the groove dimensions, bevels, root opening, etc.), which is why it’s the best description. If a job uses a different groove geometry, a separate qualification would be needed to cover that geometry.

In this standard, the S designation is tied to the weld joint geometry used in welder qualification. Specifically, it indicates a groove weld with defined dimensions and shapes that the welder must demonstrate capability to produce to the required quality. The emphasis is on being qualified for that particular groove geometry, not on surface finish, spot welding, or a generic “special” category. So the S category marks qualification for a specific groove weld geometry (the groove dimensions, bevels, root opening, etc.), which is why it’s the best description. If a job uses a different groove geometry, a separate qualification would be needed to cover that geometry.