PlugMax33

Copper Nickel Tin

Characteristics:

PlugMax33 is a Cu-Ni-Sn alloy strengthened by work hardening and spinodal decomposition, achieving strength exceeding 1200 MPa. It is non-magnetic and offers excellent stress relaxation resistance, corrosion resistance, and machinability, making it an ideal replacement for leaded beryllium copper C17300. PlugMax33 is free of toxic elements such as beryllium, lead, and cadmium, and complies with environmental regulations including RoHS and REACH.

Typical applications:

Widely used in the semiconductor, connector, and telecommunications industries, including applications such as test probes, pogo pins, RF connectors, and spring contacts. It is also suitable for various small-scale wear-resistant components.

Similar Material Designation

UNS	/
EN	/
JIS	/
GB	/

Chemical Composition

Cu ①	Balance %
Ni	11.0-15.5 %
Sn	5.5-8.5 %
Other	≤ 0.50 %

Note①：Including Silver

Physical properties②

Density (g/cm³)	8.9
Electrical conductivity (%IACS)	10
Thermal conductivity (W / m x K)	40
Coefficient of thermal expansion③ (10-6/K)	17.2
Modulus of elasticity (GPa)	120

Note②：The testing temperature is 20℃.

Note③：The testing temperature range is 20℃ to 300℃.

Fabrication Properties

Capacity for being cold worked	Good
Capacity for being hot formed	Poor
Brazing	Good
Resistance welding	Good
Machinability rating④	50%

Note④：C36000 = 100%

Mechanical Properties⑤

Temper	Diameter (mm)	Tensile Strength (MPa min.)	Yield Strength (MPa min.)	Elongation (% min.)	Hardness (HV min.)
TD04	0.8≤ Ф ≤6.0	800	700	2	240
TH04	0.8≤ Ф ≤6.0	1200	1100	2	350