work

code/modules/materials/materials.dm

@@ -94,6 +94,7 @@ var/list/name_to_material
 	var/reflectivity = 0         // How reflective to light is the material?  Currently used for laser defense.
 	var/explosion_resistance = 5 // Only used by walls currently.
 	var/conductive = 1           // Objects with this var add CONDUCTS to flags on spawn.
+	var/conductivity = null      // How conductive the material is.  Based somewhat on megasiemens / metre at 20c
 	var/list/composite_material  // If set, object matter var will be a list containing these values.
 
 	// Placeholder vars for the time being, todo properly integrate windows/light tiles/rods.
@@ -247,6 +248,7 @@ var/list/name_to_material
 	icon_colour = "#EDD12F"
 	weight = 24
 	hardness = 40
+	conductivity = 41
 	stack_origin_tech = list(TECH_MATERIAL = 4)
 	sheet_singular_name = "ingot"
 	sheet_plural_name = "ingots"
@@ -261,6 +263,7 @@ var/list/name_to_material
 	icon_colour = "#D1E6E3"
 	weight = 22
 	hardness = 50
+	conductivity = 63
 	stack_origin_tech = list(TECH_MATERIAL = 3)
 	sheet_singular_name = "ingot"
 	sheet_plural_name = "ingots"
@@ -320,6 +323,7 @@ var/list/name_to_material
 	name = DEFAULT_WALL_MATERIAL
 	stack_type = /obj/item/stack/material/steel
 	integrity = 150
+	conductivity = 6.99 // Assuming this is carbon steel
 	icon_base = "solid"
 	icon_reinf = "reinf_over"
 	icon_colour = "#666666"
@@ -377,6 +381,7 @@ var/list/name_to_material
 /material/plasteel/titanium
 	name = "titanium"
 	stack_type = null
+	conductivity = 2.38
 	icon_base = "metal"
 	door_icon_base = "metal"
 	icon_colour = "#D1E6E3"
@@ -562,6 +567,7 @@ var/list/name_to_material
 	stack_type = /obj/item/stack/material/platinum
 	icon_colour = "#9999FF"
 	weight = 27
+	conductivity = 9.43
 	stack_origin_tech = list(TECH_MATERIAL = 2)
 	sheet_singular_name = "ingot"
 	sheet_plural_name = "ingots"
@@ -571,6 +577,7 @@ var/list/name_to_material
 	stack_type = /obj/item/stack/material/iron
 	icon_colour = "#5C5454"
 	weight = 22
+	conductivity = 10
 	sheet_singular_name = "ingot"
 	sheet_plural_name = "ingots"