| 10% Vehicle Speed
| 7.5% Vehicle Speed, 5% Less decay
| ?10% enchant success, 10% less decay
|-
! scope="row"| Brass
| 5% usage speed, 5% skill level bonus
| 5% usage speed, 5% more quality when imped
| ?10% usage speed, 10% shatter resistance
|-
! scope="row"| Gold
| 1x sunder (spell)
| 5% less fuel usage, 5% less decay
| ?10% reduced size, 10% less enchant decay
|-
! scope="row"| Lead
| 5% enchant success, 5% less QL loss from repairing
| 5% shatter resistance, 5% less QL loss from repairing
| 10% shatter resistresistance| 5% shatter resistresistance, 5% enchant success| ?10% enchant success, 10% shatter resistance
|-
! scope="row"| Silver