Iron base alloys for internal combustion engine valve seat inserts, and the like
AssigneeWinsert, Inc.
InventorsXuecheng Liang, Gary R. Strong
Life of this patent
Estimating the term…
Abstract
An iron base alloy having high wear resistance at elevated temperatures with good oxidation resistance contains 1-2.8 wt. % carbon, 3-16 wt. % chromium, 1-8 wt. % vanadium, 0.5-5 wt. % niobium, up to 14 wt. % molybdenum and up to 14 wt. % tungsten, the molybdenum and tungsten combined comprising 6-14 wt. % of the alloy.
Claims29
A high temperature iron base alloy possessing excellent wear resistance combined with good hot hardness and oxidation resistance comprising:
- ______________________________________ Element Wt. % ______________________________________ C 1.6-2 Cr 6-9 W 0.0-14.0 Mo 0.0-14.0 V 1.0-8.0 Nb 0.5-5.0 Co 2.0-12.0 Fe 56.0-88.5 ______________________________________
- where W and Mo combined comprise 6-14% of the alloy.
An iron base alloy comprising 1.6 to 2 wt. % carbon, 6 to 9 wt. % chromium, 3 to 6 wt. % vanadium, 0.8 to 4 wt. % niobium, 3 to 6 wt. % cobalt, 60 to 73 wt. % iron and 10 to 14 wt. % of the combination of tungsten and molybdenum wherein the ratio of tungsten to molybdenum in the combination is between 1:10 and 10:1.
An iron base alloy comprising 1.6-2 wt. % carbon, 3 to 9 wt. % chromium, 1 to 8 wt. % vanadium, 0.5 to 5 wt. % niobium, 0 to 12 wt. % cobalt, 56 to 88.5 wt. % iron and 10 to 14 wt. % of tungsten, molybdenum or a combination of tungsten and molybdenum.
An iron base alloy possessing excellent wear resistance combined with good hot hardness and oxidation resistance consisting essentially of 1.6 to 2 wt. % carbon, 6 to 9 wt. % chromium, 1-8 wt. % vanadium, 0.5 to 5 wt. % niobium, 2 to 12 wt. % cobalt, 0 to 1.5 wt. % silicon, 0 to 1.5 wt. % manganese, 56-88.5 wt. % iron, and 10 to 14 wt. % of tungsten, molybdenum or a combination of tungsten and molybdenum.
An iron base alloy possessing excellent wear resistance combined with good hot hardness and oxidation resistance consisting of 1.6 to 2 wt. % carbon, 6 to 9 wt. % chromium, 3 to 6 wt. % vanadium, 0.8 to 4 wt. % niobium, 3 to 6 wt. % cobalt, 0 to 1.5 wt. % silicon, 0 to 1.5 wt. % manganese, 60 to 73 wt. % iron, and 10 to 14 wt. % of tungsten, molybdenum or a combination of tungsten and molybdenum.
Dependencies are inferred from the claim text.