Production Alloy system Chemical composition Features Example of use

EFCR-44
(CMR)

 Cu-Mn-Ni Cu-11.5Mn-2.7Ni Low temperature coefficient of resistance (TCR) and low thermal electromotive force (EMF).
  • Shunt resistor
  • Chip resistor

EFCR-30
(HRR)

 Cu-Mn-Sn Cu-6.8Mn-2.3Sn Low temperature coefficient of resistance (TCR) and low thermal electromotive force (EMF).
  • Shunt resistor
  • Chip resistor
OFC
(C1011)		 Oxygen free copper for electron devices 99.99Cu The first to obtained JIS Third-party Certificate in Japan.
  • Vacuum parts
  • Shielding strip
OFC
(C1020)		 Oxygen free copper 99.96Cu The highest level in purity.
  • Heat sink
  • Shielding strip
GOFC
(C1020)		 Oxygen free copper  99.96Cu The grain growth is suppressible even during heat treatment.
  • Power module substrate
TPC
(C1100)		 Tough pitch copper 99.90Cu Small amount of impurities.
  • Electronic parts
  • Automotive parts
Brass Brass Cu-Zn Production range is 5-40wt% Zn in Copper. 
  • Electronic parts
  • Machine parts
EFTEC-97
(C64770)		 Corson copper Cu-2.3Ni-0.55Si-0.5Zn-0.15Sn-0.1Mg High Performance Copper Alloy. High strength, conductivity and good bendability.
  • Electric connector
  • Terminal
EFTEC-98S
(C64790)		 Corson copper Cu-3.75Ni-0.9Si-0.5Zn-0.15Sn-0.1Mg-0.2Cr High Performance Copper Alloy. High strength, conductivity and good bendability.
  • Electric connector
  • Terminal
EFCUBE-ST
(C64790)		 Corson copper Cu-3.75Ni-0.9Si-0.5Zn-0.15Sn-0.1Mg-0.2Cr High Performance Copper Alloy. High strength, conductivity and good bendability.
  • Electric connector
  • Terminal
FAS-680
(C64770)		 Corson copper Cu-2.3Ni-0.55Si-0.5Zn-0.15Sn-0.1Mg High Performance Copper Alloy. High strength, conductivity and good bendability.
  • Electric connector
  • Terminal
EFTEC-820
(C64775)		 Corson copper Cu-2.3Ni-0.65Si-0.5Zn-0.15Sn-0.1Mg-0.15Cr High Performance Copper Alloy. High strength, conductivity and good bendability.
  • Electric connector
  • Terminal
EFCUBE-820
(C64775)		 Corson copper Cu-2.3Ni-0.65Si-0.5Zn-0.15Sn-0.1Mg-0.15Cr High Performance Copper Alloy. High strength, conductivity and good bendability.
  • Electric connector
  • Terminal
EFTEC-3
(C14410)		 Cu-Sn Cu-0.15Sn Good conductivity and heat dissipation. 
  • Lead flame for discrete, DIP
EFTEC-64T，64T-C
(C18045)		 Cu-Cr Cu-0.25Sn-0.27Cr-0.2Zn Excellent etching property and good stamping.
  • Lead flame for QFP, TQFP, SOT, QFN, LED
EFTEC-550T/E
(C18142)		 Cu-Cr Cu-0.25Cr-0.1Mg Good strength, high conductivity and excellent stress relaxation property
  • Electric connector
  • Terminal
MF202
(C50710)		 Cu-Sn Cu-2Sn-0.2Ni Conductivity two times higher with strength equal to C5111.
  • Lead flame
  • Electric connector
  • Terminal

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