Magnetically graduated steel bar

Details Magnetically graduated steel bar Magnetically graduated steel bar

1992-08-10

1994-09-27

Wyszomierski, George

Metal treatment

Stock

Magnetic

148310, 148325, 148902, 148903, C22C 3840

Patent

active

053504631

ABSTRACT:
A magnetically graduated steel bar is provided with a magnetic scale that has a steel composition consisting, on a weight basis, of 0.02-0.10% C, 0.50-1.0% Mn, 0.50-1.0% Si, 17-20% Cr, 5-8% Ni, 0.05-0.20% C plus N, and a balance of Fe and incidental impurities. The steel contains 30-60 vol % of a cold working induced martensite and is given a nonmagnetic austenitic structure by local melting. The steel bar has a tensile strength of at least 130 kgf/mm.sup.2 and a fatigue strength of at least 60 kgf/mm.sup.2.

REFERENCES:
patent: 2506558 (1950-05-01), Goller
patent: 3282686 (1966-11-01), Allen
patent: 3971676 (1976-07-01), Detert et al.

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