Copper-nickel-tin alloys

US11326242B2 · kind B2 · utility

Assignee

• MATERION CORPORATION · US

Inventors

• Karl R. Ziegler · Mayfield Heights, US
• John E. Gatehouse · Sinking Spring, US
• Bruce D. Schmeck · Leesport, US
• Fritz C. Grensing · Perrysburg, US

Key dates

• Filing date: Feb 2, 2018
• Grant date: May 10, 2022
• Expiry date: Mar 11, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C9/06
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed are various processes for preparing a strip or plate of a copper-nickel-tin alloy. The processes begin with an input, usually of a rectangular shape. The input is hot rolled and annealed. The input is then subjected to a first cold reduction, a first annealing a second cold reduction, a second annealing, a third cold reduction, and a third annealing. If desired, a fourth cold reduction, a fourth annealing, and a fifth cold reduction may be performed. The resulting strip or plate is very smooth and has increased fatigue life, along with high strength.