Hint: How do aluminum and steel differ in yield strength and ultimate tensile strength?

Note: Values below are for Aluminum 6061 and Steel ___ which differ from the image above

**Aluminum 6061**

- Yield Strength: 276 MPa
- Ultimate Tensile Strength: 310 MPa

**Steel**

- Yield Strength: 350 MPa
- Ultimate Tensile Strength: 420 MPa

Steel typically has 3x stiffness (Young’s Modulus) of aluminum.

What types of aluminum and steel are you using that their modulus’ are similar? Steel typically has 3x the stiffness of aluminum?

@bmachado You’re entirely correct. I was mistaken just by judging off the graph above. A rule of thumb is that steel typically has 3x the stiffness (Young’s Modulus of Elasticity). I will correct that in the post above!