MITSUBISHI MATERIALSCopper & Copper Alloy Business

MITSUBISHI MATERIALSCopper & Copper Alloy Business

Japanese

Products information

CRC5Cu-Cr alloy

Standard No.
CDA
C18200

A copper alloy with high electrical conductivity, heat resistance and strength.

Positioning of Alloy

A copper alloy with high electrical conductivity, heat resistance and strength. It is used in high-voltage terminals, and welding tips.

Main features

  1. High electric and thermal conductivity (conductivity%, IACS average)
  2. High strength as compared with pure copper
  3. High heat resistance

Main applications

welding tips

Chemical composition

The chemical components of CRC5 are as follows.

(Weight %)

Cr Cu
1.0 Rem.
* Including inevitable impurities and trace additive elements

Physical properties

The physical properties of CRC5 are as follows.

Property Representative Value
Specific Gravity (293K) 8.9
Coefficient of Thermal Expansion
(×10-6/K:293~573K)
17.8
Thermal Conductivity
(W/(m・K):293K)
330
Volume Resistivity
(μΩm:293K)
0.022
Electrical Conductivity
(%IACS:293K)
83

The numerical values are representative and may vary depending on the tempering process.

Mechanical properties

Mechanical properties of CRC5 are as follows.

Temper Rods
TMT
Tensile Strength
(N/mm2)
450
Elongation
(%)
15
Vickers Hardness*
(HV)
135
* For reference

The numerical values are representative and may vary depending on the tempering process.

Heat resistance

The heat resistance of CRC5 is as follows. CRC5 shows higher heat resistance than MOFC-10200.

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