Lamineries Matthey
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Precision cold rolled strip and foil

Relays and switches

Relays and switches, commonly used in a broad spectrum of applications in the automotive and robot industry, require materials and properties comparable to those in connector applications. In fact, requirements like good electrical conductivity, combined with high mechanical strength to meet the required spring characteristics, relaxation resistance at elevated temperatures and fatigue resistance are decisive for this area of application. Apart from conventional alloys (brass, bronze, certain stainless steels etc.), Lamineries MATTHEY supplies premium products such as rolled precision strips in copper-beryllium alloy.

See the brochures "Guide to Copper Beryllium" or the "Design Guide" for help in designing with CuBe.

Below you will find a list with those alloys in strip and foil form which are generally used in relay and switch making, together with the available technical data:

Beryllium Copper and Beryllium NickelTechnical file
CuBe2 - Alloy 25 / C17200 / CW101C     CuBe2-All.25-P_v22E.pdf
CuBe2 - Alloy 290 mill hardened / C17200 / CW101C  
CuBe2 - Alloy 190 mill hardened / C17200 / CW101C     CuBe-Alloy190_v22E.pdf
CuCo0.5Be - Alloy 174 mill hardened / C17410 
CuNi1.2Be0.3 - Alloy 60 mill hardened / C17460 
CuNi2Be - Alloy 3 / C17510 / CW110C 
CuNi2Be - Alloy 3 mill hardened / C17510 / CW110C 
CuNiBe0.5 - Alloy 390 mill hardened / C17460 
NiBe2 - Alloy 360 / N03360     NiBe-Alloy360_v22E.pdf
Coppers and low alloyed coppersTechnical file
STOL® 194 - CuFe2.5P / C19400 
Copper alloysTechnical file
CuNi30Mn1Fe - Copper-Nickel, 30% / CW354H / ~ C71500 
CuSn6 - Phosphor Bronze, 6% / CW452K / C51900     CuSn6_v22E.pdf
CuSn8 - Phosphor Bronze, 8% / CW453K / C52100     CuSn8_v22E.pdf
CuZn28 - Brass / CW504L     CuZn28_v22E.pdf
CuZn37 - Yellow Brass 63% / ~CW508L / ~CW507L / ~C27000/ ~C27200     CuZn37_v22E.pdf
CuZn38Pb2 - High Leaded Brass, 62% / CW608N / ~C35300     CuZn38Pb2_v22E.pdf
Other specialtiesTechnical file
CuNi15Sn8 - BrushForm® 158 / ToughMet 3 / C72900     BrushForm158_v22E.pdf
CuNi15Sn8 - BrushForm® 158 mill hardened (Toughmet 3) / C72900     BrushForm158_v22E.pdf

Other alloys are also available. There is a list with all presently available alloys.

See also dimensional tolerances and material safety datasheet (MSDS) :

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