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Weapon & Equipment Information
General Details
Name:  Ferro-Fibrous
Type (Category):  Armor (Core)
Technology:  Inner Sphere, Clan
Available To:  BattleMechs (BM), IndustrialMechs (IM)
Reference:  TechManual (p. 205)

Description:
A more advanced form of combat armor, ferro-fibrous (and its aerospace/spacecraft analogue, ferro-aluminum) is a military-grade armor significantly lighter than standard armor. Ferro-fibrous achieves its lightweight properties through the wider use of diamond fiber filaments throughout the ceramic and steel layers (standard armor does not incorporate a diamond weave in the steel layer). While this makes ferro-fibrous far more bulky, the weight savings afforded by this armor type for the same level of protection can enable units to mount more weapons and equipment. Of course, this capability must be balanced against the limited internal space left after its installation.

Limited by design (and economics) to military vehicles and BattleMechs, ferro-fibrous armor is available in a variety of popular brand names including Durallex, Kallon Unity Weave, Lexington Limited High Grade and StarGuard.

Game Rules:
Armor is considered structural and cannot be “deactivated” during combat through engine shutdown or pilot/crew injury. Critical hits against any type of ferro-fibrous armor (standard, light or heavy) critical slot have no effect and should be re-rolled.

Construction Rules:
May be mounted on any available unit type in accordance with the unit’s standard construction rules.
Inner Sphere Data
Prototype Date:  —
Production Date:  2571
Extinction Date:  2810
Recovery Date:  3040

WEAPONS AND EQUIPMENT COMBAT AND CONSTRUCTION TABLE
Heat (Aero)
Damage (Aero)
Range (Aero)
Rating
Availability
Cost (C-bills)
Weight (Tons)
Criticals
Battle Value
Direct-Fire
Explosive
– (–)
– (–)
– (–)
E
D-F-D-C
20,000xAT
*
14*
x1.0
* See rules for this equipment
AT = Armor Tonnage

Additional Construction Rules
The following construction rules extend the ones previously listed and are applicable for this technology base:
 Requires a total of fourteen critical slots to be allocated across all locations
 If used as patchwork armor, two critical slots must be allocated in each location designated

RULES LEVEL PROGRESSION TABLE (BM)
Start Year
End Year
Rules Level
2571
2809
Standard
3040
Standard


RULES LEVEL PROGRESSION TABLE (IM)
Start Year
End Year
Rules Level
2571
2809
Experimental
3040
Experimental

MTF Output → Critical Slot:  Ferro-Fibrous
PDF Output → Critical Slot:  Ferro-Fibrous
PDF Output → Armor Diagram:  FF
Clan Data
Prototype Date:  ~2820
Production Date:  ~2825
Extinction Date:  —
Recovery Date:  —

WEAPONS AND EQUIPMENT COMBAT AND CONSTRUCTION TABLE
Heat (Aero)
Damage (Aero)
Range (Aero)
Rating
Availability
Cost (C-bills)
Weight (Tons)
Criticals
Battle Value
Direct-Fire
Explosive
– (–)
– (–)
– (–)
F
X-E-D-C
20,000xAT
*
7*
x1.0
* See rules for this equipment
AT = Armor Tonnage

Additional Construction Rules
The following construction rules extend the ones previously listed and are applicable for this technology base:
 Requires a total of seven critical slots to be allocated across all locations
 If used as patchwork armor, one critical slot must be allocated in each location designated

RULES LEVEL PROGRESSION TABLE (BM)
Start Year
End Year
Rules Level
~2820
~2824
Experimental
~2825
Standard


RULES LEVEL PROGRESSION TABLE (IM)
Start Year
End Year
Rules Level
~2820
Experimental

MTF Output → Critical Slot:  Ferro-Fibrous
PDF Output → Critical Slot:  Ferro-Fibrous
PDF Output → Armor Diagram:  FF