diff --git a/README.md b/README.md
index 83f3b58..462df1f 100644
--- a/README.md
+++ b/README.md
@@ -358,20 +358,21 @@ folders, so the hand-written packs survive it.
   material properties they accept and list only `default` plus their own gem
   tags. Anything filed under `armor`/`handheld` silently never applies to a
   socketed gem. The attribute's own slot is what decides where it counts.
-- Arcane alloy shortens Iron's Spells cooldowns, and that is the point of it:
+- Arcane metal shortens Iron's Spells cooldowns, and that is the point of it:
   0.10 held, 0.05 on a helmet, 0.03 on the lower armour, filed under `default`
   so a suit plated in it counts as well as a staff made of it. Iron's Spells
   reads the attribute as a factor on a base of 1 and spends it as
   `cooldown * (2 - value)`, so the operation is `*` - a flat `+` would be added
   to a base of zero and do nothing - and 0.10 means 10% off the wait. It stacks
-  per module, so a weapon built entirely of arcane alloy is around 40%, against
+  per module, so a weapon built entirely of arcane metal is around 40%, against
   25% for Iron's Spells' own best staff; a full set adds roughly another 45%,
   which keeps even an all-arcane player under the 100% where the formula
-  bottoms out. The material
-  is called Arcane Alloy rather than Arcane Steel because Create: Wizardry
-  renames the ingot that way, and Create: Wizardry's arcane sheet and block are
-  the same metal - they arrive as a material extension in that mod's own pack,
-  since naming them directly would break the material for anyone without it.
+  bottoms out. The material is called Arcane Metal because the item is an Arcane
+  Ingot and a material is named for the substance, not the shape it is traded
+  in; plain Arcane, which is what Iron's Spells calls the material itself, is
+  taken here by the essence. Create: Wizardry's arcane sheet and block are the
+  same metal - they arrive as a material extension in that mod's own pack, since
+  naming them directly would break the material for anyone without it.
 - Platinum comes from Create Propulsion: Simulated, the only platinum in the
   pack. It is soft for its density, so it swings slowly and hits like steel; it
   is worth mining for gold-grade enchantability that does not fall apart, and it
diff --git a/src/main/resources/packs/irons_spellbooks/data/cmmodular/miapi/materials/metal/arcane_metal.json b/src/main/resources/packs/irons_spellbooks/data/cmmodular/miapi/materials/metal/arcane_metal.json
index 3a08da5..385059d 100644
--- a/src/main/resources/packs/irons_spellbooks/data/cmmodular/miapi/materials/metal/arcane_metal.json
+++ b/src/main/resources/packs/irons_spellbooks/data/cmmodular/miapi/materials/metal/arcane_metal.json
@@ -1,5 +1,5 @@
 {
-  "translation": "Arcane Alloy ",
+  "translation": "Arcane Metal ",
   "groups": [
     "metal"
   ],
diff --git a/tools/materials.py b/tools/materials.py
index 277a84b..8f284f3 100644
--- a/tools/materials.py
+++ b/tools/materials.py
@@ -705,15 +705,18 @@ MATERIALS = [
       properties={"handheld": speed(0.12)}),
       # Light enough to swing fast and enchant well, in the Tolkien sense.
 
-    # "Arcane Alloy" rather than Arcane Steel: Create: Wizardry ships a resource
-    # pack that renames the ingot, and that is what the item is called in game.
-    M("arcane_metal", "irons_spellbooks", "metal", "Arcane Alloy",
+    # "Arcane Metal" rather than plain Arcane, which is what Iron's Spells calls
+    # this material itself: the item is an Arcane Ingot, and a material is named
+    # for the substance rather than the shape it is traded in. Plain Arcane is
+    # taken here by the essence above, and the metal is the one of the two that
+    # can afford the longer name.
+    M("arcane_metal", "irons_spellbooks", "metal", "Arcane Metal",
       "irons_spellbooks:arcane_ingot",
       [{"item": "irons_spellbooks:arcane_ingot", "value": 1.0}],
       tier=5, hardness=6.2, density=2.8, flexibility=3, durability=1700,
       enchantability=26, mining_speed=9, toughness=3, armor_durability=34,
       armor_toughness=2.0,
-      # The one thing arcane alloy is for: spells come back faster. Cooldown
+      # The one thing arcane metal is for: spells come back faster. Cooldown
       # reduction is the whole reason to build out of it rather than out of
       # mithril, so it is deliberately the strongest effect on any metal here.
       #
@@ -729,10 +732,10 @@ MATERIALS = [
       # the wait, and +1.00 in total would be instant casting.
       #
       # These stack per module, and that is what sets the numbers. A weapon is
-      # about four modules, so one built entirely of arcane alloy is 40% - well
+      # about four modules, so one built entirely of arcane metal is 40% - well
       # past the 25% of Iron's Spells' own best staff, which is the point. The
       # armour values are smaller because a full set is a dozen modules: all of
-      # it in arcane alloy lands near 45%, so even a player wearing the set and
+      # it in arcane metal lands near 45%, so even a player wearing the set and
       # holding the staff stays under the 100% the formula bottoms out at.
       properties={"default": {"attributes": [
           attribute("irons_spellbooks:cooldown_reduction", 0.10, "mainhand", "*"),