Patent ID: 11891682
Assignee: THE JAPAN STEEL WORKS, LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 1:
2. An iron-based sintered alloy that is used in sliding components in pairs, the iron-based sintered alloy having a composition comprising, in terms of percent by mass, Ti: 18.4 to 24.6%, Mo: 2.8 to 6.6%, C: 4.7 to 7.0%, Cr: 7.5 to 10.0%, Ni: 4.5 to 6.5%, Co: 1.5 to 4.5%, Al: 0.6 to 1.0%, the balance being Fe and unavoidable impurities,
wherein the alloy has a structure in which hard particles are dispersed in a matrix, an area ratio of the hard particles is 38% to 41% and standard deviation of the area ratio of the hard particles is 2.5 to 3.5, and a maximum circle equivalent diameter of the hard particles is a predetermined value of 26.77 μm to 10 μm, and
the hard particles have a fine and relatively uniform shape and are homogenously dispersed over the whole matrix.