Ferro-Fibrous Armor

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Ferro-Fibrous armor


Ferro-Fibrous armor (FF) is a special type of armor used by vehicles and BattleMechs. Utilizing a weave of ferro-steel, ferro-titanium, and diamond weave fibers which boosts the tensile strength of the plating[1][2], it provides more protection per ton than standard armor (12% for Inner Sphere FF, 20% for Clan FF), but takes up more space on the 'Mech or vehicle (14 critical slots for Inner Sphere, 7 for Clan 'Mechs; two slots for Inner Sphere vehicles, one for Clan). The maximum amount of protection is not changed; merely the weight of armor required to achieve that level of protection. For a unit which already has maximum armor protection, it is therefore considered a weight-saving measure, at the cost of critical space. The weight savings for Endo Steel are greater than those saved by ferro-fibrous armor, but it is more costly and obviously more difficult to repair or add as an upgrade to a 'Mech.

First developed by the Terran Hegemony in 2571,[3] Ferro-Fibrous armor was lost to the Inner Sphere during the Succession Wars. The Draconis Combine was the first to re-create it in 3040.[4] Later, the Free Worlds League and Lyran Alliance would develop Light and Heavy versions of Ferro-Fibrous armor.[5]


Game Rules[edit]

FF Armor is a Standard Rules piece of Equipment under the current system and was Rules Level 2 under the previous system. Armor of this type produced in the Inner Sphere has a Technology Rating of E while Clan produced armor has a Technology Rating of F. As with all combat vehicle armor types Ferro-Fibrous is assumed to have a Barrier Rating of 10.


Ferro-fibrous armor are manufactured on the following planets:

Brand Planet Company
Aldis Heavy Ferro-Fibrous[6] Kendall Kali Yama - Alphard Trading Corporation
Aldis Heavy Ferro-Fibrous[7] Terra Aldis Industries
ArcShield Maxi IV FF[8] Panpour Jalastar Aerospace
Durallex Light FF[citation needed] New Syrtis Johnston Industries
Durallex Light FF[9] Gibson Gibson Federated BattleMechs - (Free Worlds Defense Industries)
Durallex Light FF[citation needed] Furillo Defiance Industries
Durallex Light FF[10][11] Taurus Taurus Territorial Industries
Durallex Super Medium FF[12][13][14][15] Quentin Independence Weaponry
Durallex Super Medium FF Hesperus II Defiance Industries
Durallex Super Medium FF Taurus Taurus Territorial Industries
Forging AM15[16] Twycross
Trellshire Heavy Industries
Manufacturing Plant SFF-NG1
Manufacturing Plant SFF-SH2
Forging FF01 Ferro-Fibrous Strato Domingo Auxiliary Production Site 4
Forging ZK11 Strato Domingo Auxiliary Production Site 4
Forging X85 Huntress Phan Industrial Complex
Glasgow Limited Primo FF Hesperus II Defiance Industries
Hellespont Lite Ferro-Fibrous Sian Hellespont 'Mech Works
Jolassa-328 Ferro-Fibrous Umka Kerr-McGinniss
Jolassa-328 Ferro-Fibrous Abadan Adam Tech Industries
Kallon FWL Special FF Gibson Gibson Federated BattleMechs - (Free Worlds Defense Industries)
Kallon FWL Special FF Tematagi Nimakachi Fusion Products Limited
Kallon FWL Special FF Thermopolis Kallon Industries
Kallon Light Ferro-Fibrous Thermopolis Kallon Industries
Kallon Unity Weave FF Kirklin Kallon Industries
Kallon Unity Weave FF Nanking Kallon Industries
Kallon Unity Weave FF Wernke Kallon Industries
Kallon Unity Weave FF Loyalty Kallon Industries
Kallon Unity Weave FF Pandora Red Devil Industries
Krupp 200 Ferro-Fibrous Terra Krupp Armament Works
Krupp Draco-100 Ferro-Fibrous Terra Krupp Armament Works
Lexington Ltd. High Grade FF Oliver Quikscell Company
Lexington Ltd. High Grade FF Coventry Coventry Metal Works
Mk. VI Ferro-Fibrous Arcadia Arcadia BattleMech Plant CM-T4
New Samarkand Royal FF New Samarkand New Samarkand Metals
Norse-34 Ferro-Fibrous Loxley Blue Shot Weapons
Paulina Heavy Ferro-Fibrous Hesperus II Defiance Industries
Protec 12 Ferro-Fibrous Al Na'ir Scarborough Manufacturers
Ryerson 250 X-Blend FF Pinard Vandenberg Mechanized Industries
StarGuard 3056 Ferro-Fibrous Terra Homer
StarGuard CIV Ferro-Fibrous New Avalon Achernar BattleMechs
StarGuard CIV Ferro-Fibrous New Avalon Corean Enterprises
StarGuard CIV Ferro-Fibrous Wernke Kallon Industries
Starshield Ferro-Fibrous Marduk Victory - (Norse BattleMech Works)
StarSlab 511 Ferro-Fibrous Gienah Gienah Combat Vehicles
StarSlab-1 Ferro-Fibrous Ruchbah Michaelson Heavy Industries
StarSlab-1 Ferro-Fibrous Canopus IV Majesty Metals and Manufacturing
StarSlab-1 Ferro-Fibrous Sevon Alliance Mining and Geology
StarSlab-4 Ferro-Fibrous Hesperus II Defiance Industries
Valiant Gauntlet Ferro-Fibrous Carlisle Bergan Industries
Valiant Scutum Ferro-Fibrous Robinson Valiant Systems

Clan Armor Types[edit]

  • Compound G5 Ferro-Fibrous [17]
  • Compound JF Ferro-Fibrous [18]
  • Compound JX2 Ferro-Fibrous [19]
  • Compound K4 Ferro-Fibrous [20]
  • Compound RSH5 Ferro-Fibrous [21]
  • Compound VH30 Ferro-Fibrous [22]
  • Compound VM20 Ferro-Fibrous [23]
  • Compound Zeta Ferro-Fibrous [24]
  • Compound E91 Ferro-Fibrous [25]
  • Compound FM3 Ferro-Fibrous [26]
  • Compound H17 Ferro-Fibrous with CASE [27]
  • “Magnum” Ferro-Fibrous Composite [28]
  • Airframe Pattern 2841 Ferro-Fibrous [29]
  • Arcadia Compound Delta VII Ferro-Fibrous [30]
  • Composite A-4 Ferro-Fibrous [31]
  • Compound 3092/3 Ferro-Fibrous [32]
  • Compound A2F Ferro-Fibrous [33]
  • Compound Alpha Ferro-Fibrous [34]


  1. TechManual, p. 205
  2. MechWarrior 4: Vengeance (Resource)
  3. TechManual, p. 205
  4. TechManual, p. 205
  5. TechManual, p. 205
  6. Technical Readout: 3055 Upgrade, p. 56, "Produced Hercules Components"
  7. Technical Readout: 3145 Capellan Confederation, p. 24, "Produced Behemoth II Components"
  8. Technical Readout: 3058 Upgrades, p. 106, "Typhoon Vehicle Profile"
  9. Objective Raids, p. 124, "Produced Gibson BattleMech Components"
  10. Technical Readout: 3058, p. 10, "Produced Maultier Components"
  11. Technical Readout: 3058, p. 198, "Produced Maultier Components on Sterope"
  12. Technical Readout: 3060, p. 122, "Produced Tai-sho 'Mech Components"
  13. Technical Readout: 3067, p. 68, "Produced Tessen Components"
  14. Objective Raids, p. 105, "Produced Independence Weaponry Components"
  15. Technical Readout: 3060, p. 110, "Produced JagerMech III Components"
  16. Technical Readout: 3145 Mercenaries, p. 26-27, "Kite Reconnaissance Vehicle"
  17. TRO 3060 p. 56
  18. TRO 3060 p. 146
  19. TRO 3060 p. 36
  20. TRO 3060 p. 46
  21. TRO 3060 p. 158
  22. TRO 3060 p. 64
  23. TRO 3060 p. 54
  24. TRO 3060 p. 68
  25. TRO 3060 p. 62
  26. TRO 3060 p. 140
  27. TRO 3060 p. 152
  28. TRO 3060 p. 58
  29. TRO 3060 p. 44
  30. TRO 3060 p. 184
  31. TRO 3060 p. 176
  32. TRO 3060 p. 60
  33. TRO 3060 p. 160
  34. TRO 3060 p. 162