Longitudinal bend specimen vs transverse

[JohnTM]

I will be conducting (2) PQR tests soon. 1" thick coupons, A656-80 to A514, and 1" thick A514-A514.

I will be using Figure 4.10 from D1.1, using B-U2a-GF from Figure 3.4, 1/4" root.

Does anybody have experience with these materials, in this thickness? Were you able to make transverse bends work, or did you have to go to the much larger longitudinal specimen?

Thanks in advance

 

[gtaw]

Longitudinal bends are typically used when dissimilar metals with dissimilar mechanical properties, i.e., ductility, are welded together.

Transverse bends are used when welding like metals together.

Review the bend radius specified by the applicable welding standard. Different welding standards use different bend radii for different base metals (think in terms of P, M, or S numbers). Keep in mind different bend radii are used for different base metal thicknesses under 3/8 inch thick. The exception is API 1104, which uses the same bend radius for all line pipe regardless of wall thickness or material.

Best regards - Al