Patent ID: 7419554
Filing Date: 2008-09-02
Classification: C22C

Abstract:
1. An engine cylinder block casting fabricated from an alloy comprising, by weight: 2.7-3.8 percent carbon; 1.0-2.2 percent silicon; 0.3-1.2 percent manganese; 0.02-0.1 percent phosphorus; 0.04-0.15 percent sulphur; as much as 1.5 percent copper; as much as 0.6 percent chromium; as much as 0.6 percent molybdenum; less than 0.02 percent aluminum; less than 0.02 percent titanium; less than 0.025 percent vanadium; and nitrogen and balance up to 100 percent of iron and impurities, wherein the nitrogen content of the alloy is in the range of 0.0095-0.0160 percent and the tin content of the alloy is in the range of 0.05-0.15 percent and the alloy has a tensile strength of about 260 MPa to about 300 MPa.