THONI V PHILIP
Engineers in Reading, PA

4140524, Feb 20, 1979

Feb 4, 1974

5/439048

James R. Oberholtzer - Reading PA
Thoni V. Philip - Reading PA

Carpenter Technology Corporation - Reading PA

C22C 3802

75123J

A low alloy temper resistant saw blade steel containing about 0. 90-1. 4% carbon, 0. 8-2% silicon, 0. 5-1. 5% vanadium, 1-3% tungsten plus twice the percent molybdenum, and the balance iron plus incidental impurities having a minimum hardness of Rc 60 in its hardness and tempered condition and which is not softened by exposure to temperatures of about 600. degree. F. A process for preparing the steel is also disclosed in which the alloy is hot worked to strip which is then austenitized, isothermally transformed at least in part to bainite, and subjected to a subcritical anneal to form a pinpoint carbide structure with hardness reduced sufficiently to facilitate fabrication of the saw teeth. After the saw teeth are formed and set, the heat treatment is completed by flame hardening the teeth and tempering so that the teeth are at a minimum hardness of about Rc 60 and do not soften when exposed to temperatures of about 600. degree. F.

4157258, Jun 5, 1979

Aug 18, 1978

5/935003

Thoni V. Philip - Reading PA
Robert W. Krieble - Reading PA

Carpenter Technology Corporation - Reading PA

C22C 3842, C22C 3844

75124

A carburizing alloy steel and case-hardened articles made therefrom, having high core impact strength and fracture toughness combined with high case hot hardness and temper resistance at 400. degree. F. (204. degree. C. ), containing 0. 06-0. 16% carbon, 0. 2-0. 7% manganese, 0. 5-1. 5% silicon, 0. 5-1. 5% chromium, 1. 5-3% nickel, 1-4% copper, 2. 5-4% molybdenum, up to 0. 4% vanadium, and the balance iron and incidental impurities. The alloy may also contain small amounts of phosphorus, sulfur, nitrogen, aluminum, columbium, titanium, zirconium, and calcium.

4036640, Jul 19, 1977

Jan 6, 1977

5/757250

Thoni V. Philip - Reading PA
Gunvant N. Maniar - Reading PA

Carpenter Technology Corporation - Reading PA

C22C 3822, C22C 3824, C22C 3826, C22C 3830

75126C

An alloy steel is provided containing, by weight percent, carbon 0. 5-1. 1, manganese 0. 10-<0. 50, silicon 0. 10-<0. 80, chromium 3. 5-5. 0, molybdenum 2. 5-5. 0, vanadium 0. 5-2. 0, cobalt 0. 5-4. 0, columbium 0. 15-0. 50, up to 0. 10 aluminum and the balance iron except for incidental impurities. The alloy can be balanced to provide a minimum room temperature hardness of R. sub. c 60 with outstanding toughness and ductility or to provide a minimum room temperature hardness of R. sub. c 63 with good wear resistance and toughness.