The level of an affixe is not the same thing as the level of an item, you have to take the quality level of the item in account.

Typically you will only be able to find a grim helm 31+life on diablo or urdar bosses, but a full helm 31+life can be dropped by meph.

The formula is the following :
IF(MAX(ilvl;qlvl)<(99-INT(qlvl/2))
THEN alvl = (MAX(ilvl;qlvl)-INT(qlvl/2))
ELSE alvl = (2*MAX(ilvl;qlvl)-99))

Item lvl of an imbue is char lvl +4

Meaning a 200ed Martel could be imbued at char lvl 52

Given a char lvl of 90 and diablos lvl of 90
(90x .4)+(90x .4)=72

200 ed still available for at least the first reroll... All the way down to lvl 50
(50x .4)+(90x.4)=56

The question was not concerning imbuing.
You could then refeer to :
https://forums.d2jsp.org/topic.php?t=53998437&f=87

Rolling with 6 skulls a diablo drop at char level 90 would indeed result in a iLvl 72 Martel, with an affix level of ... 46.
You would be 10 short from 56 !

Look closely to adebisi's formulas...

ifaklvl with 6 skulls - 40
ifaklvl with skull and soj - 66

Des Weiteren gibt es noch drei Indikatoren, die durch das benutzte Rezept festgelegt werden. Entweder ist das neue interne Level (ilvl) direkt vorgegeben, oder es gibt stattdessen einen Charakterlevelfaktor (cfak) und einen internen Levelfaktor (ifak). Folgende Tabelle gibt die entsprechenden Zahlen für alle hierfür in Frage kommenden verfügbaren Rezepte an:

Rezept ilvl cfak ifak
magische Waffe + 3 lädierte Edelsteine → magische, gesockelte Waffe desselben Typs 25 - -
magischer Ring + perfekter Rubin + Explosiv-Elixier → granatroter Ring
magischer Ring + perfekter Saphir + Auftau-Elixier → kobaltblauer Ring
magischer Ring + perfekter Topas + Regenerationstrank → korallenroter Ring
magischer Ring + perfekter Smaragd + Gegengift-Elixier → dunkelgrüner Ring
gesockelte Waffe + 3 normale Edelsteine → magische, gesockelte Waffe desselben Typs
magische Waffe + 3 makellose Edelsteine → magische, gesockelte Waffe desselben Typs
magisches Schwert + 4 Heiltränke + Rubin → Schwert des Blutegels
magischer Schild + Dornenkeule + 2 Schädel → Schild der Stacheln 30 - -
magisches Amulett + je ein perfekter Edelstein jeder Art → prismatisches Amulett
Zauberinnen-Stab + Kris + Gürtel + Diamant → wilde Stangenwaffe 50 - -
3 magische Ringe → magisches Amulett
3 magische Amulette → magischer Ring - 75 0
seltener Gegenstand + 6 perfekte Schädel → seltener Gegenstand desselben Typs - 40 40
seltener Gegenstand + Stein von Jordan + perfekter Schädel → seltener Gegenstand desselben Typs - 66 66



Thats means there is no ilvl for the item in that receipe

This post was edited by KaterMikesch on Oct 18 2018 11:45pm

It means (as stated in Atair's D2 Wissen - in German) that whenever iLvl of output (ilvl) is not directly specified, it is calculated as a percentage (cfak) of character level (clvl) and a percentage (ifak) of iLvl of the old item (ilvl_alt) - the latter in these cases being a rare item:

ilvl = [40 x clvl / 100] + [40 x ilvl_alt / 100] <---- "6 x PSkull" (cfak=ifak=40)
ilvl = [66 x clvl / 100] + [66 x ilvl_alt / 100] <---- "1 x PSkull + 1 x SoJ" (cfak=ifak=66)

The generic formula is on that same page, right beneath the table of recipes which you copy-pasted.

Atair's D2 Wissen is an excellent resource, BTW (but unfortunately available only in German).

This post was edited by Quorra on Oct 20 2018 04:26pm