COPPER ROLLED SHEET AND COMPONENT FOR ELECTRONIC AND ELECTRICAL DEVICE

• Main Authors: MATSUNAGA HIROTAKA, MAKI KAZUMASA
• Format: Patent
• Language: English; Japanese
• Published: 13.12.2018
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; TREATMENT OF ALLOYS OR NON-FERROUS METALS

To provide a copper rolled sheet suitable for components for an electronic and electrical device capable of suppressing generation of defects while excellent in conductivity, strength, flexure processability, and stress relaxation resistance.SOLUTION: A copper rolled sheet contains Mg in a range of 0.005 mass% or more and less than 0.1 mass% and the balance Cu with inevitable impurities, and has H content of less than 2 mass.ppm, P content of less than 20 mass.ppm, O content of less than 10 mass.ppm, S content of less than 20 mass.ppm, a mass ratio of total amount of P, O and S (P+O+S) and Mg amount, (P+O+S)/Mg of 0.6 or less and conductivity of 88%IACS or more.SELECTED DRAWING: None 【課題】導電性、強度、曲げ加工性、耐応力緩和特性に優れるとともに、欠陥の発生を抑制することが可能な電子・電気機器用部品に適した銅圧延板を提供する。【解決手段】Ｍｇを０．００５ｍａｓｓ％以上０．１ｍａｓｓ％未満の範囲で含み、残部がＣｕ及び不可避不純物からなり、Ｈの含有量が２ｍａｓｓｐｐｍ未満、Ｐの含有量が２０ｍａｓｓｐｐｍ未満、Ｏの含有量が１０ｍａｓｓｐｐｍ未満、Ｓの含有量が２０ｍａｓｓｐｐｍ未満とされ、ＰとＯとＳの総量（Ｐ＋Ｏ＋Ｓ）とＭｇ量との質量比（Ｐ＋Ｏ＋Ｓ）／Ｍｇが０．６以下とされるとともに、導電率が８８％ＩＡＣＳ以上とされていることを特徴とする。【選択図】なし