When crafting a marine weapon, resources have the following effects:

Iron - Base Material (+1 Durability)
Steel - (+1 Durability)
Lead - (+2 Durability +1 Weight)
O2 - (-1 Weight)
Co2 - (+.01 Stat Bonus)
H2o - (-1 Weight)

When crafting Armor, resources have the following effects:

Iron - Base Material (+.03 Stat Bonus)
Steel - (+.02 Stat Bonus)
Lead - (+1 Durability +1 Weight)
O2 - (-1 Weight)
Co2 - (+.01 Stat Bonus)
H2o - (+1 Durability)