MECHA SUPERSTRUCTURE

A mecha's superstructure-its exoskeleton, interior braces, and other structural parts-can be made from any sufficiently advanced metal alloy. Whatever its composition, a mecha's superstructure has a hardness that reduces the damage the mecha takes from weapons and collisions.
To build a mecha superstructure from scratch, a character must succeed at a Craft (mechanical) check (DC 30) and a Craft (structural) check (DC 30) after investing the requisite amount of assembly time, based on the mecha's size: Large 150 hours, Huge 300 hours, Gargantuan 600 hours, Colossal 1,200 hours. A character without a mechanical tool kit takes a -4 penalty on both skill checks. The character must also make a Wealth check against the mecha's base purchase DC.
Different types of superstructure materials are presented below and summarized in Table: Superstructure Materials.
Hardness: The amount of damage the material absorbs from a weapon hit or collision.
Base Purchase DC Modifier: The modifier applied to the mecha's base purchase DC.
Restriction: Since mecha require a license to own and operate, the materials used for making them do not require special licenses to purchase.
Table: Superstructure Materials
-- Modified Base Purchase DC --
Superstructure Material
Hardness
Large
Huge
Gargantuan
Colossal
Alumisteel (PL 5)
10
36
40
44
56
Duralloy (PL 6)
15
40
44
48
60
Vanadium (PL 6)
20
44
48
52
64
Neovulcanium (PL 7)
20
40
44
48
60
Neutronite (PL 7)
25
44
48
52
64
Megatanium (PL 8)
30
40
40
48
60
ALUMISTEEL (PL 5)
This easy-to-acquire alloy is lightweight and reasonably strong. Alumisteel can also be used for armor (see Mecha Armor, below).
Hardness: 10.
Base Purchase DC Modifier: -4.
DURALLOY (PL 6)
Duralloy is harder, heavier, and more durable than alumisteel. It can also be used to fashion armor (see Mecha Armor, below).
Hardness: 15.
Base Purchase DC Modifier: None.
VANADIUM (PL 6)
Vanadium alloy absorbs a respectable amount of damage and is easy to mold.
Hardness: 20.
Base Purchase DC Modifier: +4.
NEOVULCANIUM (PL 7)
Similar to duralloy, neovulcanium uses plasma-forging techniques to create an alloy of unparalleled resilience. Neovulcanium can also be used for armor (see Mecha Armor, below).
Hardness: 20.
Base Purchase DC Modifier: None.
NEUTRONITE (PL 7)
Neutronite is a tough steel alloy into which a weave of free neutrons has been pressed. It is extremely resilient but also incredibly massive, weighing approximately five times more than a similar volume of lead.
Hardness: 25.
Base Purchase DC Modifier: +4.
MEGATANIUM (PL 8)
Sandwiched layers of crystal carbon and neovulcanium held in a magnetic matrix, megatanium is exceedingly hard and durable. Megatanium can also be used for armor (see Mecha Armor, below).
Hardness: 30.
Base Purchase DC Modifier: None.
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