Machine Core is a Material in NieR:Automata. Not used as an upgrade material, its only purpose is to be sold for cash.

Warped Wire is a Material in NieR:Automata. Used in Weapon Upgrades, it can be obtained in various ways throughout the game.

Titanium Alloy is a Material in NieR:Automata. Used in Weapon Upgrades, it can be obtained in various ways throughout the game.

Memory Alloy is a Material in NieR:Automata. Used in Weapon Upgrades, it can be obtained in various ways throughout the game.

Powerup Part M is a Material in NieR:Automata. Used in Pod Upgrades, it can be obtained from locked chests in various locations.

Powerup Part S is a Material in NieR:Automata. Used in Pod Upgrades, it can be obtained as a Quest Reward or from a boss in the City Ruins.

Machine Arm is a Material in NieR:Automata. Used in Weapon Upgrades, can be purchased from Pascal or found as a drop from Machine enemies.

Simple Gadget is a Material in NieR:Automata. Used in Pod Upgrades, can be found in various locations over the course of the game.

Natural Rubber is a Material in NieR:Automata. Used in Pod Upgrades, can be purchased from the Amusement Park in Route C.

Filler Metal is a Material in NieR:Automata. A metal found in the Abandoned Factory. Can also be bought from Shopkeeper in Route C.