ULTRA-LIGHTWEIGHT STEEL WHEEL FOR COMMERCIAL VEHICLE
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United States of America Patent
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Aug 15, 2024
app pub date -
Jun 9, 2022
filing date -
Jun 10, 2021
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Abstract
The present application relates to an ultra-lightweight steel wheel for a commercial vehicle. The wheel has excellent material characteristics and an advanced design, and consists of a rim for mounting a tire, and a disc having a hub flange for detachably connecting to a wheel hub or axle, wherein the rim and/or disc is made of a heat-treated and hardened steel material with a carbon content between 0.18 wt % and 0.37 wt %, and the disc and/or rim principally consists of a martensitic microstructure and has a tensile strength of at least 900 MPa. The maximum thickness of the rim is less than 4.50 mm and/or the maximum thickness of the disc is less than 12.00 mm, wherein the value of the product of the wheel diameter and the wheel width divided by the wheel mass is greater than 4000 mm2/kg.
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