Production Alloy system Chemical composition Features Example of use

CMR (PDF)

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

HRR (PDF)

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
(JIS C1011)
Oxygen free copper for electron devices 99.99Cu The first to obtained JIS Third-party Certificate in Japan.
  • Vacuum parts
  • Shielding strip
OFC
(JIS C1020)
Oxygen free copper 99.96Cu The highest level in purity.
  • Heat sink
  • Shielding strip
GOFC
(JIS C1020)
Oxygen free copper  99.96Cu The grain growth is suppressible even during heat treatment.
  • Power module substrate
TPC
(JIS 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
Phosphor bronze Cu-Sn Cu-Sn-P Production range is 6-8wt% Sn in Copper. 
  • Spring for electronic part
  • Switch
  • Lead flame
  • Connector
Super phosphor bronze
(JIS C5210 SP)
Cu-Sn Cu-8Sn-P High strength compared to C5210 which improved the bendability.
  • Electric connector
  • Terminal
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-7025
(C70250)
Corson copper Cu-3.2Ni-0.7Si-0.2Mg High strength and good conductivity corson alloy.
  • Lead flame for TQFP, TSOP
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