Ovsereved NKE012 | High Conductivity Alloys | JX Nippon Mining & Metals
High Conductivity Alloys

NKE012

NKE012(UNS Alloy No. C14415)

Overview

NKE012 is a copper alloy developed by adding small amounts of tin to copper and applying our proprietary rolling and thermal process technologies to improve strength, thermal resistance, and stress relaxation resistance properties while maintaining high electrical conductivity.
At 90% IACS, the electrical conductivity is close to that of pure copper. It is well suited to applications requiring high electrical conductivity and heat dissipation. From bus bars to battery terminals and connectors, it is an ideal copper alloy for use in a wide range of electronic devices.

Features

  1. 1.Electrical conductivity and thermal conductivity properties close to those of pure copper (90% IACS)
  2. 2.Superior to pure copper in strength, thermal resistance, and stress relaxation resistance
    (Temper EH: stress relaxation rate 30% or below at 150℃, 500 hours)
  3. 3.Excellent bend formability (180 degree contact bending possible at t = 0.64 mm)

Table 1. NKE012 chemical composition (%)

  Cu Sn
Standard composition Remainder 0.12
  • Note that all numerical values shown are typical values.

Table 2. Physical properties of NKE012

Electrical conductivity 90 %IACS (@20℃)
Specific resistance 19 nΩ·m (@20℃)
Thermal conductivity 350 W/mK
Linear expansion coefficient 17.7 ×10-6/K (20 to 300℃)
Modulus of elasticity 128 GPa
Density 8.92 g/cm3
  • Note that all numerical values shown are typical values.

Table 3. Mechanical properties of NKE012
(upper: typical values, lower: specification range)

Temper Tensile strength
(MPa)
Yield strength
(MPa)
Elongation
(%)
Vickers hardness
(Hv)
H 430
(375-475)
420
( - )
3
min. 1.0
130
(95-160)
EH 500
(410-600)
490
( - )
2
( - )
145
(105-175)
  • Note that all numerical values shown are typical values.

Temperature rise during current flow

  • Test piece size (thickness × width × length): 0.15mm×0.5mm×30mm
  • Current: 1 to 5 A
  • For reference purpose only. They are observed values, not guaranteed values.
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