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Contact Bimetal |
| Contact bimetal is a clad material, which combines the advantageous properties of a relatively inexpensive carrier material with the special contact properties of a precious metal coating or a precious metal alloy coating. |
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| G.RAU produces contact bimetal strip by means of pressure welding, brazing, seam welding and electroplating. |
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| The choice of the manufacturing method depends on the material, its properties and the required dimensions. |
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| Contact materials primarily require good switching characteristics. The carrier material needs to have good electrical and thermal conductivity. Sufficient strength and spring-properties as well as good technological properties such as solderability and weldability are advantageous. |
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| Commonly copper and copper alloys, nickel and nickel alloys are used while for special applications thermobimetals are chosen. |
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Thermo Bimetal |
| Thermobimetals are laminated materials consisting of at least two components with different thermal expansion coefficients. During heating one of the components expands more than the other(s), which results in a curvature of the thermobimetal. The greater the variance in thermal expansion between the components the greater the curvature will be. |
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| During practical application external forces often restrict a free movement of the thermobimetal. Any partial or complete restriction results in a corresponding force. This way a thermobimetal has the capacity of retaining or releasing energy. |
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| For improved weldability an electroplating treatment may be added. |
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| G.Rau manufacture strips with a thickness from 0,10 mm to 2 mm and a width from 1 mm to 150 mm. The tolerances vary depending on the dimensions; the narrowest tolerance is +0,1 mm for width and ±0,002 mm for thickness. |
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Bourdon Tubes |
| We produce bourdon tubing from precious metals, stainless steels, copper and copper alloys, brass, nickel and nickel alloys, titanium alloys, tin alloys, composite materials as well as special alloys. We also offer these tubes with metallic bright outer diameter and inner diameter surfaces. |
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| These tubes are available in a thermally stress relieved condition in a flat or pointed oval shape. |
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| Round Tubing |
OD 0,30 - 20,00 mm |
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WT 0,03 - 0,60 mm |
| Oval Tubing |
WIDTH 2,00 - 20,00 mm |
H 1,00 - 10,00 mm |
WT 0,07 - 0,70 mm |
| Further sizes |
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Upon inquiry. |
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Profile Tubes |
| G.RAU produces profile tubing from precious metals, stainless steels, copper and copper alloys, brass, nickel and nickel alloys, titanium alloys, tin alloys, composite materials as well as special alloys with a maximum outer diameter of 30 mm. |
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| Further dimensions upon request. |
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| Forms of delivery such as coil or fixed length, lot sizes of supply, various dimensions can be discussed based on your requirements. |
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| Electroplated surfaces, Production of parts and assemblies with profiled tubes also can be discussed to meet the requirements of the customers. |
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Thin Walled Tubes |
| We produce thin walled tubing from precious metals, stainless steels, copper and copper alloys, brass, nickel and nickel alloys, titanium alloys, tin alloys, composite materials as well as special alloys. |
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| Other sizes, tolerances, forms of delivery such as coils, cut lengths can be discussed based on your requirements. Production of parts and assemblies using thin wall tubes also can be discussed to meet your requirements |
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| Round Tubing |
OD 0,30 - 20,00 mm |
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WT 0,03 - 0,60 mm |
| Oval Tubing |
WIDTH 2,00 - 20,00 mm |
H 1,00
- 10,00 mm> |
WT 0,07 - 0,70 mm |
| Further sizes |
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Upon inquiry. |
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Capillary Tubes |
| G.RAU produces capillary tubing from copper and copper alloys, stainless steels and special alloys optionally with braided copper or tin-coated wires or a polyethylene sleeve. |
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| Other sizes, tolerances, forms of delivery such as coils, cut lengths can be discussed based on your requirements. Production of parts and assemblies using thin wall tubes also can be discussed to meet your requirements |
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| OD |
0,80 - 4,00 mm |
| ID |
0,15 - 1,00 mm |
| Further sizes |
Upon inquiry |
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Wires |
| For contact technologies G.RAU manufactures round wires and profiles made of silver and silver alloys, silver clad materials or coated wires with a top coating of precious metal or non-precious metal as well as contact profiles. |
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| Round Wire |
Diameter 0,060 - 15,00 mm |
| Profile Wire |
Upon inquiry |
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| For medical engineering applications, G.Rau offer round wire, flat wire, profile wire and sheet from NITINOL. (NiTiSE508, SM495, SE508ELI). |
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| For information about further materials as well as dimensions please refer Euroflex pages of this website. And contact us for further discussion. |
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Profiles |
| Profiles are available in form of strip, rod and mini profiles from precious metals, stainless steels, copper and copper alloys, brass, nickel and nickel alloys, titanium alloys, tin alloys, composite materials as well as special alloys. |
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| Further dimensions upon inquiry. |
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| Forms of delivery such as Coils, bars, fixed lengths, requirements of electroplated surfaces, lot sizes to meet with your requirements can be discussed. |
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| Production of parts and assemblies using above profiles to meet your requirements also can be discussed upon request. |
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