High-modulus, high-strength, low alloy gray cast iron for cylinder liners and automotive applications

Patent · Tue Jan 23 04:00:00 EST 2024

OSTI ID:2541707

Yang, Jianghuai; Gerard, Dale A.; Wang, Qigui

A high elastic modulus, high ultimate tensile strength, and low alloy gray cast iron for cylinder liners. The gray cast iron includes from 2.60 wt % to 3.30 wt % Carbon (C); from 1.50 wt % to 2.30 wt % Silicon (Si); from 0.30 wt % to 0.80 wt % Manganese (Mn); from 0.15 wt % to 0.35 wt % Phosphorus (P); from 0.05 wt % to 0.11 wt % Sulphur (S); from 0.60 wt % to 1.20 wt % Copper (Cu); from 0.10 wt % to 0.30 wt % Chromium (Cr); from greater than 0.0 wt % to 0.1 wt % Nickle (Ni); from 0.15 wt % to 0.40 wt % Molybdenum (Mo); and balance wt % Iron (Fe). The total wt % of Si, Mn, P, S, Cu, Cr, Ni, and Mo is less than about 4.10 wt %. The gray cast iron has a Carbon Equivalent (CE) from 3.00 wt % to 3.90 wt % and the product of Mn %*S % is from 0.025 to 0.045.

• Research Organization: GM Global Technology Operations LLC, Detroit, MI (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: EE0008877
• Assignee: GM Global Technology Operations LLC (Detroit, MI)
• Patent Number(s): 11,879,168
• Application Number: 17/462,527
• OSTI ID: 2541707
• Country of Publication: United States
• Language: English