公开(公告)号：US20200215604A1

公开(公告)日：2020-07-09

申请号：US16648061

申请日：2018-09-28

Applicant: MITSUBISHI MATERIALS CORPORATION

Inventor： Shoichiro YANO ,  Shinobu SATOU ,  Kanta DAIRAKU

IPC: B22D11/059 ,  C22C9/00 ,  C22F1/08

Abstract: A casting mold material used when casting a metal material includes, as a composition: Cr within a range of 0.3 mass % or more and 0.7 mass % or less; Zr within a range of 0.025 mass % or more and 0.15 mass % or less; Sn within a range of 0.005 mass % or more and 0.04 mass % or less; P within a range of 0.005 mass % or more and 0.03 mass % or less; and a balance consisting of Cu and inevitable impurities, in which a Zr content [Zr] (mass %) and a P content [P] (mass %) have a relationship of [Zr]/[P]≥5, and a Sn content [Sn] (mass %) and a P content [P] (mass %) have a relationship of [Sn]/[P]≤5.

公开(公告)号：US20190062874A1

公开(公告)日：2019-02-28

申请号：US15771847

申请日：2016-10-11

Applicant: MITSUBISHI MATERIALS CORPORATION

Inventor： Shoichiro YANO ,  Kanta DAIRAKU ,  Toshio SAKAMOTO

IPC: C22C9/01 ,  C22F1/08

Abstract: A copper alloy material has a composition including: 0.3 mass % or more and less than 0.5 mass % of Cr; 0.01 mass % or more and 0.15 mass % or less of Zr; and a Cu balance including inevitable impurities, wherein an average of crystal grain sizes is in a range of 0.1 mm or more and 2.0 mm or less, and a standard deviation of the crystal grain sizes is 0.6 or less.