These are all the armor materials for which you can override the total defense value by adding them to the "Total armor overrides" setting inside the mod configuration.

minecraft:leather
minecraft:chainmail
minecraft:iron
minecraft:gold
minecraft:diamond
minecraft:turtle
minecraft:netherite
minecraft:armadillo
supplementaries:shulker_shell
minecraft:batpack4
minecraft:batpack16
minecraft:batpack64
minecraft:batpack128
dwm:titanium
eternal_starlight:aethersent
eternal_starlight:thermal_springstone
eternal_starlight:glacite
eternal_starlight:starlit_diamond
eternal_starlight:deepsilver
eternal_starlight:amaramber
eternal_starlight:alchemist
eternal_starlight:air_sac
friendsandfoes:wildfire_crown
galosphere:sterling
hexalia:bogged
hexalia:ghost
iceandfire:copper
iceandfire:silver
iceandfire:blindfold
iceandfire:sheep
iceandfire:earplugs
iceandfire:deathworm_yellow
iceandfire:deathworm_white
iceandfire:deathworm_red
iceandfire:troll_mountain
iceandfire:troll_forest
iceandfire:troll_frost
iceandfire:dragonsteel_fire
iceandfire:dragonsteel_ice
iceandfire:dragonsteel_lightning
iceandfire:dragon_scales_red
iceandfire:dragon_scales_green
iceandfire:dragon_scales_bronze
iceandfire:dragon_scales_gray
iceandfire:dragon_scales_blue
iceandfire:dragon_scales_white
iceandfire:dragon_scales_sapphire
iceandfire:dragon_scales_silver
iceandfire:dragon_scales_electric
iceandfire:dragon_scales_amethyst
iceandfire:dragon_scales_copper
iceandfire:dragon_scales_black
iceandfire:sea_serpent_scales_blue
iceandfire:sea_serpent_scales_bronze
iceandfire:sea_serpent_scales_deepblue
iceandfire:sea_serpent_scales_green
iceandfire:sea_serpent_scales_purple
iceandfire:sea_serpent_scales_red
iceandfire:sea_serpent_scales_teal
mythicmetals:adamantite
mythicmetals:aquarium
mythicmetals:banglum
mythicmetals:bronze
mythicmetals:carmot
mythicmetals:celestium
mythicmetals:copper
mythicmetals:durasteel
mythicmetals:hallowed
mythicmetals:kyber
mythicmetals:legendary_banglum
mythicmetals:metallurgium
mythicmetals:midas_gold
mythicmetals:mythril
mythicmetals:orichalcum
mythicmetals:osmium
mythicmetals:osmium_chainmail
mythicmetals:palladium
mythicmetals:prometheum
mythicmetals:runite
mythicmetals:silver
mythicmetals:star_platinum
mythicmetals:steel
mythicmetals:stormyx
mythicmetals:tidesinger
netherdepthsupgrade:soul_sucker
oblivion:solarite
oblivion:scarlet
oblivion:fiery_netherite
techreborn:bronze
techreborn:silver
techreborn:steel
techreborn:ruby
techreborn:sapphire
techreborn:peridot
techreborn:quantum
techreborn:nano
techreborn:cloaking_device
techreborn:lithium_batpack
techreborn:lapotronic_orbpack
minecraft:bee_material
unseen_world:unseenium
unseen_world:abyssal
unseen_world:titanium
