Ngk Insulators, Inc.

Taku Sakai

Naokuni Muramatsu

Takaharu Iwadachi

Koki Chiba

Naokuni c/o Legal Affairs And Intell Property Dept Muramatsu

Koki c/o Legal Affairs And Intell Property Dept Chiba

A method for producing beryllium-copper containing at least Be and Cu, includes holding the beryllium-copper for a predetermined solid solution time in a solid solution temperature range in which the Be is dissolved into the Cu, cooling the beryllium-copper at a cooling speed at which the Be remains dissolved in the Cu, applying plastic strain to a cooled beryllium-copper over multiple times in a processing temperature range in which the Be is not precipitated, and holding the beryllium-copper for a predetermined age hardening time in a precipitation temperature range in which the Be is precipitated.

Method for producing beryllium-copper

A method of hot forming beryllium-copper alloy including from 1.60 to 2.00% by weight of Be, from 0.2 to 0.35% by weight of Co and the balance being essentially Cu, under specified conditions of a working temperature, a working rate, and an amount of work strain to produce a hot formed product of an equiaxed grain structure having a uniform stable grain size. 2

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Chofu, Japan

Taku Sakai