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 !!NEW!!  CuNiBe                               C17510                                        AVINS

Designation   CuNiBe            
ASTM-No. (UNS):  C17510                    
RWMA (USA):    class 3    

Standards

ASTM (USA):  B441, B 534
EN:   1652, 12163, 12165, 12166, 12167
Din (D):  17666, 17672

Guaranteed Composition (weight%)
Co max. 0.3   Be 0.2 - 0.6   Ni 1.4 - 2.2   Fe max. 0.1   Al max. 0.1   Si max. 0.2    Cu remainder

Main technology characteristics

CuNiBe is a precipitation hardening Cu-alloy. In the heat treated normal condition, the material possesses considerable hardness and thermal stability with good electrical and thermal conductivity. Special production processes can lead to particularly  high conductivity. 

Physical Properties

Specific weight

8.8 g/cm³
Specific heat 0.38 J/g K
Thermal conductivity (heat treated) 220 - 250 W/mK   (Special=270-310 W/mK)
Thermal expansion coefficient (68-572 °F) 17.2 x 10-6 / K
Electrical conductivity (solution heat treated, quenched) 20 % IACS, 12 MS/m
Electrical conductivity (heat treated) 43 % IACS, > 25 MS/m     (Special= 65% IACS >38MS/m)
Melting interval 1832 - 1886 °F
!!NEW!! C17510 Special Tempers - Better conductivity of CuNiBe C17510 is achieved with special processing.  thermal (heat treated): 270-310 W/mK
electrical (heat treated): 65% IACS, >38 MS/m


!!NEW!!

 Mechanical    Properties Condition Sol. heat treated quenched           TB 00 / H 065 Hot formed heat-treated    TF 00 / H220 Hot formed special heat-tr. H250 C17510 Special  Temper

MS 36 / H200

Hardness HB 65 - 95 > 220 > 240 > 200
Tensile strength        [KSI] > 36 > 94 > 109 > 95
Yield strength Rp0.2 [KSI] > 20 > 73 > 87 > 73
Elongation A5            [%] > 25 > 8 > 8 > 10
Modulus of Elasticity       [KSI] ≈ 20000 ≈ 20000 ≈ 20000
Softening temperature °F

896

896

896

Processing Instruction

Hot forming:

CuCoBe is suitable for hot forming at about 1650 - 1300 °F. A high oxidizing furnace atmosphere should be avoided. Rapid cooling is recommended after hot forming.

Cold forming:

CuCoBe is suitable for cold forming. Intermediate annealing for softening can be carried out at approximately. 1470 °F with subsequent rapid cooling.

Heat treatment:

To achieve optimum properties,  CuCoBe should be solution heat-treated and fast quenched in water. This is followed by age hardening.

Solution heat treatment:

1650 - 1760 °F. 15 - 60 minutes. Quenching in water
Hardness measurement control: max. 100 HB
Conductivity control: approx. 12 m/Ωmm²

Age hardening:

860 - 930 °F 1 - 5 hours. Air cooling (Not in water!)

Machining:

It is recommended that this type of machining (e.g. turning, milling, drilling) be done in the age hardened condition. If drilling,  use a drill with a larger angle or twist.   Allow for sufficient cooling. 

Solder Capability:

CuCoBe or C17510 can be soft soldered in the age hardened condition. However, the maximum temperature during soldering cannot exceed 750°F. Hard soldering with a silver solder with a low melting point is also possible. Nevertheless, a loss of hardness is to be expected even with limited soldering. Gas-shielded and resistance welding are also possible, though preferably in a solution heat-treated condition. Allow for adequate aeration and ventilation as well as welding smoke extraction. Clean metallic surfaces are required for all soldering.

> Material Safety Data Sheet, Issue 01.05.97 (acc. to EC-Directive 93/112/EC)

 

Application  CuCoBe or C17510 is used for electrodes, brackets, and shafts for spot, seam, butt and projection welding for materials with high strength and greater electrical resistance as well as cast steel.   C17510 can also be used as cooling inserts in molds, molds for non-ferrous metals,  inserts in steel tools requiring a fast cooling speed,  and molds for plastics, leather and wood imitations as well as  for nozzles and needles for hot channel systems, sealing heads, and die-casting pistons.

!! NEW !!  C17510-Special Tempers has additional uses. It is an excellent choice for seam welding for  the production of radiators and tin containers, resistance welding for the production of  welded wire mesh,  and flash-butt welding for the production of wheels (wheel rims).


 

Details of the properties or application of materials are for descriptive purposes only. Confirmation of suitability with regard to specific properties or application require written agreement.

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