3. Material selection

4. Young’s Modulus – Density of Steel and Wood

5. Young’s Modulus – Cost of Steel and Wood

6. Strength – Density of Steel and Wood

7. Strength – Toughness of Steel and Wood

8. Strength – Elongation of Steel and Wood

9. Strength – Cost of Steel and Wood

10. Strength – Maximum Service Temperature of Steel and Wood

11. Specific Stiffness – Specific Strength of Steel and Wood

12. Resistivity – Cost of Steel and Wood

13. Recycle Fraction – Cost of Steel and Wood

14. Energy Content – Cost of Steel and Wood

15. How much do they cost ?

16. What processes are suitable to your chosen materials?