Crs Holdings, Inc.

Carpenter Technology Corporation

Other

Raymond M. Hemphill

David E. Wert

David E Wert

Theodore Kosa

Raymond M Hemphill

Michael L Schmidt

Paul M Novotny

Harrison A Garner, Jr

Timothy Robert Armstrong

Gregory J Del Corso

David Andrew Helmick

Samuel J Kernion

Karl A Heck

Shane Para

John F McGraw

Bruce A Smith

A quench and temper steel alloy is disclosed having the following composition in weight percent. The balance of the alloy is iron and the usual impurities found in similar grades of quench and temper steels intended for similar use or service, including not more than about 0.01% phosphorus and not more than about 0.010% sulfur. A quenched and tempered steel article made from this alloy is also disclosed. Further disclosed is a method of making the alloy.

Quench and temper corrosion resistant steel alloy and method for producing the alloy

A quench and temper steel alloy is disclosed having the following composition in weight percent. The balance of the alloy is iron and the usual impurities including not more than about 0.01% phosphorus, not more than about 0.010% sulful, and not more than about 0.10% nitrogen. A quenched and tempered steel article made from this alloy is also disclosed. The steel article is characterized by a tensile strength of at least about 290 ksi, a fracture toughness (k) of at least about 65 ksi, good resistance to general corrosion, and good resistance to pitting corrosion.

Quench and temper corrosion resistant steel alloy

A method of manufacturing a ferrous alloy article is disclosed and includes the steps of melting a ferrous alloy composition into a liquid, atomizing and solidifying of the liquid into powder particles, outgassing to remove oxygen from the surface of the powder particles, and consolidating the powder particles into a monolithic article.

Method of manufacturing a ferrous alloy article using powder metallurgy processing

A tool steel alloy having a unique combination of hardness and toughness is disclosed. The alloy contains, in weight percent, about: wt. % C 1.85-2.30, Mn 0.15-1.0, Si 0.15-1.0, P 0.030 max., S 0-0.30, Cr 3.7-5.0, Ni&plus;Cu 0.75 max., Mo 1.0 max., Co 6-12, W 12.0-13.5, V 4.5-7.5. The balance is essentially iron and usual impurities. The elements C, Cr, Mo, W, and V are balanced in this alloy such that &minus;0.05&lE;&Dgr;C&lE;&minus;0.42 where &Dgr;C&equals;((0.033W)&plus;(0.063Mo)&plus;(0.06Cr)&plus;(0.2V))&minus;C. A powder metallurgy tool steel article made from consolidated alloy powder having the aforesaid weight percent composition provides a Rockwell C hardness of at least about 69.5 when heat treated.

High-hardness powder metallurgy tool steel and article made therefrom

An age hardenable martensitic steel alloy having a unique combination of very high strength and good toughness consists essentially of, in weight percent, about

Age hardenable alloy with a unique combination of very high strength and

High strength, high fracture toughness alloy

A high strength, high fracture toughness structural steel alloy consisting essentially of, in weight percent, about

High strength, high fracture toughness structural alloy

This invention provides a case hardening steel alloy and articles made therefrom which, when case hardened and heat treated, have high case hardness, corrosion resistance, high temperature capability and metal-to-metal wear resistance and high core ductility, impact toughness and fracture toughness. The alloy contains about 0.05-0.1 w/o C, 0.04 w/o max. N, 1.5 w/o max. Mn, 1 w/o max. Si, 11-15 w/o Cr, 1-3 w/o Mo, 1.5-3.5 w/o Ni, 3-8 w/o Co, 0.1-1 w/o V, and the balance Fe. In a preferred embodiment, the alloy is balanced according to Equation 1 (Eq.1) so that:

Case hardenable corrosion resistant steel alloy and article made

An improved hot work tool steel has higher hardness capability and better temper resistance above 1100 F. and better wear resistance than AISI type H13 and better toughness and ductility then AISI type H10 or type H21. The steel alloy contains essentially the following in weight percent:

Hot work tool steel with good temper resistance

A hot work tool steel has high hardness capability and improved toughness when air cooled in section sizes of 6 inches (15.24 cm) or larger. The alloy steel which is deep air hardenable, has good dimensional stability and exceptional wear resistance, in its broad scope consists essentially of about 0.35-0.6 w/o carbon, 1.0 w/o max. manganese, 2.0 w/o max. silicon, 5.7-7.0 w/o chromium, 1.65-2.2 w/o molybdenum, 0.6-1.1 w/o vanadium, and the balance is iron except for the usual impurities found in commercial grades of such alloy steels.

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West Lawn, PA, United States of America

David E Wert