What material are the bushing made of?

Hello the bushings are made of Powder metallurgy ,the door hinge pin are made of steel. Powder metallurgy is an industrial technology for preparing metal powder or using metal powder (or the mixture of metal powder and non-metallic powder) as raw material, forming and sintering to prepare metal materials, composites and various types of products. The use of powder metallurgy technology can directly make porous, semi dense or fully dense materials and products, such as oil bearing, gear, cam, guide rod, cutting tool and so on. Hope my answer can help you.I suggest you search Powder metallurgy on the Youtube, you will know better.

Material	Steel
Brand	JSDAN
Finish Type	Painted
Mounting Type	Door Mount
Unit Count	16.0 Count
Manufacturer	JSDAN
UPC	725364421918
Item Weight	11.3 ounces
Product Dimensions	6 x 2 x 0.5 inches
Item model number	38416
Manufacturer Part Number	BRK-11005

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