Iron material for high-temperature-resistant bearing bushings, bearing bushing made of said material, and turbocharger having such a bearing bushing

An iron material, comprising:

• a material composition including iron, Fe and at least alloy constituents within limit amounts stated below in percent by weight, wt. %:
• carbon, C:
• 1.5 to 3.0 wt. %;
• silicon, Si:
• 1.0 to 6.0 wt. %;
• manganese, Mn:
• 1.5 to 7.00 wt. %;
• nickel, Ni:
• 12.0 to 36.0 wt. %;
• chromium, Cr:
• 6.0 to 12.00 wt. %;
• phosphorus, P:
• 0.05 to 0.25 wt. %;
• copper, Cu:
• 0.5 to 7.5 wt. %;
• molybdenum, Mo:
• 2.0 to 5.0 wt. %;
• and
• tungsten, W:
• 0.8 to 2.0 wt. %,
• wherein the carbon constituent comprises free carbon incorporated into a structure of the iron material composition as lamellar graphite, nodular graphite, or vermicular graphite to improve self-lubrication properties of the iron material.