Probe Needle Specifications – Material

Acme Technology handles all main materials used currently in manufacturing probe needles. They are selected by customers according to their properties for different applications. Following are the properties of the four main probe materials used frequently in the probe manufacturing industry.

Material Code Composition Density
g/cm3		 Hardness
Knoop		 Tensile
Strength
ksi		 Resistivity
μohm/cm
Rhenium
Tungsten		 WR 96.67%Tungsten
3.3%Rhenium		 19.3 818-891 2.90-3.36 9.15-9.65
Tungsten W 99.95%Tungsten 19.3 705-832 2.65-2.90 5.59-5.86
Beryllium Copper BC 98.00%Copper
1.90%Beryllium		  8.4 300-350 1.38-1.64 6.10 -7.93
Paliney 7 P 35.16%Palladium
29.86%Silver
13.89%Copper
10.02%Gold
9.96%Platinum
0.97%Zinc		 11.8 340-400 160 25.80-31.60

Acme Technology’s wire source is highly selective, consistent and reliable from among the world wire market. The quality of wire materials from Acme’s wire vendors is at the top level.Acme’s current wire vendors are as follows: