Alloy steel and article made therefrom

Details Alloy steel and article made therefrom Alloy steel and article made therefrom

2006-06-27

2006-06-27

Yee, Deborah (Department: 1742)

Metal treatment

Stock

Ferrous

C148S332000, C148S319000, C148S318000, C420S091000, C420S112000

Reexamination Certificate

active

07067019

ABSTRACT:
A relatively high strength high toughness medium Carbon Copper-Nickel-Chromium alloy steel and method that eliminates and/or reduces the use of scarce, expensive alloying elements and is lower in cost than existing high strength high toughness alloy steels with comparable strength and toughness properties. In a first embodiment, the alloy steel is comprised of by weight about 0.40–1.00% Copper, about 2.50–8.00% Nickel, and about 0.80–3.50% Chromium. In a second embodiment the alloy steel is comprised of by weight about 0.55–0.70% Copper, about 1.0–6.0% Nickel, and about 1.0–2.2% Chromium.

REFERENCES:
patent: 3713905 (1973-01-01), Philip et al.
patent: 6699333 (2004-03-01), Dubois
ASM International, Materials Park, Ohio, Metallographer's Guide: Practices and Procedures for Irons and Steels, Chapter 1, “Introduction to Steels and Cast Irons”, Table1.1 p. 3, 1999.

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