The drop chance of each ingredients is the same, however some are used much more than others.
If one wants to craft one of each single tier recipe, he will need:
- 75 Large Devil Scales
- 42 Large Glowing Arrowhead
- 57 Large Length of Infernal Chain
- 46 Large Twisted Shrapnel
- 29 Large Gnawed Bone
- 75 Large Sulfurous Stone
That is due to Gems and Essences requiring always a Stone and a Scale.
Perhaps consider increasing the Stones and Scales drops a little?