If the column is long, Euler formula will be used for calculation. The Euler formula is defined as,

^{2}= I/A into the above equation. Then we get,

Notice that the buckling load is dependent only on the length (L), cross section (I) and the stiffness of material (E) of the column.

**The strength of the material is not involved at all.**Therefore, in a long column application, there is no benefit to use a high-strength material. A low-strength material having the same modulus of elasticity (E) would perform well.

See the J.B. Johnson formula in the next post.

Reference: