Spring back rates for 316 SS 1

[rsmichaud]

Does anyone have any data on spring back rates for 316 SS? I am trying to bend plates (approx 8" x 5" x 0.25") and in order to size the die correctly, I would like to factor in the spring back rate.

 

[metengr]

You need to know the bend radius, and condition of the material. Using the information in ASM Handbook, Vol 14,

Bend radii, degree springback in a 90 degree bend

304 ss
1t 2 degrees
6t 4 degrees
20t 15 degrees


Also, springback is approximately proportional to the equation below;

(0.2YS + UTS)/2.

 

[rsmichaud]

That will do. Thanks!