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2. Recycling by material - Wikipedia

   en.wikipedia.org/wiki/Recycling_by_material

   Recycling is via a steelworks: scrap is either remelted in an electric arc furnace (90-100% scrap), or used as part of the charge in a Basic Oxygen Furnace (around 25% scrap). [20] Any grade of steel can be recycled to top quality new metal, with no 'downgrading' from prime to lower quality materials as steel is recycled repeatedly. 42% of ...

3. Downcycling - Wikipedia

   en.wikipedia.org/wiki/Downcycling

   Downcycling symbol. Downcycling, or cascading, is the recycling of waste where the recycled material is of lower quality and functionality than the original material. [1] [2] Often, this is due to the accumulation of tramp elements in secondary metals, which may exclude the latter from high-quality applications.

4. File:Scout moor gearbox, rotor shaft and brake assembly.jpg

   en.wikipedia.org/wiki/File:Scout_moor_gearbox...

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5. Disc brake - Wikipedia

   en.wikipedia.org/wiki/Disc_brake

   Close-up of a disc brake on a Renault car. A disc brake is a type of brake that uses the calipers to squeeze pairs of pads against a disc (sometimes called a [brake] rotor) [1] to create friction. [2] There are two basic types of brake pad friction mechanisms: abrasive friction and adherent [further explanation needed] friction. [3]

6. Remanufacturing - Wikipedia

   en.wikipedia.org/wiki/Remanufacturing

   It requires the repair or replacement of worn out or obsolete components and modules. Parts subject to degradation affecting the performance or the expected life of the whole are replaced. Remanufacturing is a form of a product recovery process that differs from other recovery processes in its completeness: a remanufactured machine should match ...

7. Brake pad - Wikipedia

   en.wikipedia.org/wiki/Brake_pad

   Although brake pad wear is unique to each vehicle, it is generally recommended that brake pads be replaced every 50,000 miles, [6] while brake discs (or rotors) typically last longer, needing replacement every 70,000 miles. Malfunctions with brake pads can have many effects on the performance of a vehicle.