Patent ID: 8528513
Filing Date: 2013-09-10
Classification: B22D,C22C,F02F,F05C,Y10T

Abstract:
1. A steel piston for internal combustion engines, which comprises at least one piston upper part ( 12 ) with combustion recess ( 11 ) and annular wall ( 5 ) and a piston lower part ( 13 ) with connecting rod bearing ( 8 ), wherein the steel piston is cast in one piece and in a materially unitary manner from a high-grade steel alloy consisting of in % by weight Mn: 3-9 Si: 0.3-1 C: 0.01-0.03 Cr: 15-27 Ni: 1-3 Cu: N: the rest Fe, and unavoidable steel companion elements.