D d y
Cross-Section Properties [see Machinery's Handbook 29th Ed. p. 237]
For the properties of a solid circular section set d to zero.
Show/Hide Equations


A = \pi(D^{2}-d^{2})/4y = D/2I = \pi(D^{4}-d^{4})/64

Z = I/yk = \sqrt{I/A}

Outside Diameter (D):   inch Inside Diameter (d):   inch

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