• Dali Electronics
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ALLOY GRADE - CuZr

  • Specification: C15000
  • Composition:  Zr 0.1 – 0.2%, Others: 0.1% Max., Balance: Cu
  • Hardness HRB: >48
  • Tensile Strength N/mm2: >240
  • Electrical Conductivity % (IACS): >90%
  • Elongation in %: >10%
  • Electrical Application: Traction Motor, Resistance Welding Electrodes, Switches, Commutators.
  • Industrial Application: Seam Welding Wheels, Connectors, Resistance Welding Electrodes.
  • Forms Available: Short Circuit Rings & Rotor Bars, Billets, Rods, Bars, Profiles, Wheels.

ALLOY GRADE - CuCr

  • Specification : C18200
  • Composition: Cr 0.6 – 1.2%, Others: 0.7% Max. Balance: Cu
  • Hardness HRB >65
  • Tensile Strength N/mm2: >360
  • Electrical Conductivity % (IACS): >78%
  • Elongation in %: >10%
  • Electrical Application: Traction Motor, Electrical Conductors Requiring Greater, Strength than Copper, Electron Tube, Grid Side Rods, Wire, High Temperature, Contacts, Switchgears, Electric Motor and Generator Components, Electrical Connectors, Connectors, Cable, Semi Conductor Bases, Parts for Electronic Devices, Switch Contacts, Arcing and Bridging Parts, Thermal Conductors Requiring Greater Strength than Copper, Circuit Breaker Parts.
  • Industrial Application: Wear Plates on Heavy Equipment, Heat Sinks, Current Carrying Shafts and Arms, Plastic Mold Components, Structural Parts, Spot Welding Tips, Flash Welding Electrodes, Molds, Flash Welding Electrodes, Electrode Holder Jaws, Resistance Welding Machine Electrodes, Seam Welding Wheels.
  • Forms Available: Short Circuit Rings & Rotor Bars, Billets, Rods, Bars, Profiles, Wheels, Casting.

ALLOY GRADE - CuCrZr

  • Specification : C18150
  • Composition: Cr 0.5 – 1.5%, Zr 0.03 – 0.30%, Other 0.3% Max., Balance: Cu
  • Hardness HRB: >65
  • Tensile Strength N/mm2: >360
  • Electrical Conductivity % (IACS): >78%
  • Elongation in %: >10%
  • Electrical Application: Traction Motor, Resistance Welding Electrodes, Electrical Conductors Requiring Greater Strength than Copper, Electron Tube, Grid Side Rods, Wire, High Temperature, Contacts, Switchgears, Electric Motor and Generator Components, Electrical Connectors, Connectors, Cable, Semi Conductor Bases, Parts for Electronic Devices, Switch Contacts, Arcing and Bridging Parts, Thermal Conductors Requiring Greater Strength than Copper, Circuit Breaker Parts.
  • Industrial Application: Wear Plates on Heavy Equipment, Heat Sinks, Current Carrying Shafts and Arms, Plastic Mold Components, Structural Parts, Spot Welding Tips, Flash Welding Electrodes, Molds, Flash Welding Electrodes, Electrode Holder Jaws, Resistance Welding Machine Parts, Seam Welding Wheels, Welding Electrodes, Tip and Rod Extensions.
  • Forms Available: Short Circuit Rings & Rotor Bars, Billets, Roads, Bars, Profiles, Wheels, Casting.

C17500 - COBALT BERYLLIUM COPPER

[table][table_head][table_row][table_heading_cell]Physical Properties[/table_heading_cell][table_heading_cell]Metric[/table_heading_cell][table_heading_cell]English[/table_heading_cell][table_heading_cell]Comments[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Density [/table_cell][table_cell]8.75 g/cc[/table_cell][table_cell]0.316 lb/in³[/table_cell][table_cell][/table_cell][/table_row][/table_body][/table]
[table][table_head][table_row][table_heading_cell]Mechanical Properties[/table_heading_cell][table_heading_cell]Metric[/table_heading_cell][table_heading_cell]English[/table_heading_cell][table_heading_cell]Comments[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Hardness, Rockwell B [/table_cell][table_cell]92 – 100[/table_cell][table_cell]92 – 100[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Tensile Strength, Ultimate [/table_cell][table_cell]690 – 825 MPa[/table_cell][table_cell]100000 – 120000 psi[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Tensile Strength, Yield [/table_cell][table_cell]550 – 690 MPa @Strain 0.200 %[/table_cell][table_cell]79800 – 100000 psi @Strain 0.200 %[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Elongation at Break [/table_cell][table_cell]10 – 20 %[/table_cell][table_cell]10 – 20 %[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Modulus of Elasticity [/table_cell][table_cell]125 – 130 GPa[/table_cell][table_cell]18100 – 18900 ksi[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Fatigue Strength [/table_cell][table_cell]205 MPa, 275 – 310 MPa[/table_cell][table_cell]29700 psi, 39900 – 45000 psi[/table_cell][table_cell]Strip, Rod[/table_cell][/table_row][/table_body][/table]
[table][table_head][table_row][table_heading_cell]Electrical Properties[/table_heading_cell][table_heading_cell]Metric[/table_heading_cell][table_heading_cell]English[/table_heading_cell][table_heading_cell]Comments[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Electrical Resistivity [/table_cell][table_cell]0.0000028735 – 0.000003831333 ohm-cm @Temperature 20.0 °C[/table_cell][table_cell]0.0000028735 – 0.000003831333 ohm-cm @Temperature 68.0 °F[/table_cell][table_cell][/table_cell][/table_row][/table_body][/table]
[table][table_head][table_row][table_heading_cell]Thermal Properties[/table_heading_cell][table_heading_cell]Metric[/table_heading_cell][table_heading_cell]English[/table_heading_cell][table_heading_cell]Comments[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]CTE, linear [/table_cell][table_cell]17.6 µm/m-°C @Temperature 20.0 – 200 °C[/table_cell][table_cell]9.78 µin/in-°F @Temperature 68.0 – 392 °F[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Specific Heat Capacity [/table_cell][table_cell]0.420 J/g-°C[/table_cell][table_cell]0.100 BTU/lb-°F[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Melting Point [/table_cell][table_cell]1030 – 1070 °C[/table_cell][table_cell]1890 – 1960 °F[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Solidus [/table_cell][table_cell]1030 °C[/table_cell][table_cell]1890 °F[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Liquidus [/table_cell][table_cell]1070 °C[/table_cell][table_cell]1960 °F[/table_cell][table_cell][/table_cell][/table_row][/table_body][/table]
[table][table_head][table_row][table_heading_cell]Processing Properties[/table_heading_cell][table_heading_cell]Metric [/table_heading_cell][table_heading_cell]English[/table_heading_cell][table_heading_cell]Comments[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Processing Temperature [/table_cell][table_cell]980 °C[/table_cell][table_cell]1800 °F[/table_cell][table_cell]Hot-Shortness Temperature[/table_cell][/table_row][table_row][table_cell]Solution Temperature [/table_cell][table_cell]900 – 925 °C, 900 – 955 °C[/table_cell][table_cell]1650 – 1700 °F, 1650 – 1750 °F[/table_cell][table_cell]Large sections, 1 hour per inch or fraction of an inch[/table_cell][/table_row][table_row][table_cell]Aging Temperature [/table_cell][table_cell]425 °C, 470 – 495 °C[/table_cell][table_cell]797 °F, 878 – 923 °F[/table_cell][table_cell]3-6 hours, for maximum strength, Commercial practice, 2-3 hours[/table_cell][/table_row][table_row][table_cell]Hot-Working Temperature [/table_cell][table_cell]700 – 925 °C[/table_cell][table_cell]1290 – 1700 °F[/table_cell][table_cell][/table_cell][/table_row][/table_body][/table]
[table][table_head][table_row][table_heading_cell]Chemical Composition[/table_heading_cell][table_heading_cell]Metric[/table_heading_cell][table_heading_cell]English[/table_heading_cell][table_heading_cell]Comments[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Beryllium, Be [/table_cell][table_cell]0.40 – 0.70 %[/table_cell][table_cell]0.40 – 0.70 %[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Cobalt, Co [/table_cell][table_cell]2.4 – 2.7 %[/table_cell][table_cell]2.4 – 2.7 %[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Copper, Cu [/table_cell][table_cell]96.90%[/table_cell][table_cell]96.90%[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Iron, Fe [/table_cell][table_cell]>= 0.10 %[/table_cell][table_cell]>= 0.10 %[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Other [/table_cell][table_cell]>= 0.50 %[/table_cell][table_cell]>= 0.50 %[/table_cell][table_cell][/table_cell][/table_row][/table_body][/table]

C17510 - BERYLLIUM COPPER ALLOY

[table][table_head][table_row][table_heading_cell]Copper (incl. Silver)[/table_heading_cell][table_heading_cell]Iron[/table_heading_cell][table_heading_cell]Nickel[/table_heading_cell][table_heading_cell]Cobalt[/table_heading_cell][table_heading_cell]Silicon[/table_heading_cell][table_heading_cell]Beryllium[/table_heading_cell][table_heading_cell]Aluminum[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]97.8 Nominal[/table_cell][table_cell].10 Maximum[/table_cell][table_cell]1.4 Minimum[/table_cell][table_cell].30 Maximum[/table_cell][table_cell].20 Maximum[/table_cell][table_cell].20 Minimum[/table_cell][table_cell].20 Maximum[/table_cell][/table_row][/table_body][/table]

Precipitation hardened alloy with good thermal conductivity and high hardness. Not suitable for case hardening or nitrating.

Hardware: Fuse clips, fasteners, springs, switch parts, relay parts, electrical conductors.

Industrial: Welding equipment.

Typical for rod in HT temper

[table][table_head][table_row][table_heading_cell]Hardness*[/table_heading_cell][table_heading_cell]Rockwell B Scales[/table_heading_cell][table_heading_cell]98[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Tensile Strength**[/table_cell][table_cell]KSI[/table_cell][table_cell]115[/table_cell][/table_row][table_row][table_cell]Yield Strength**[/table_cell][table_cell]KSI[/table_cell][table_cell]110[/table_cell][/table_row][table_row][table_cell]Elongation**[/table_cell][table_cell]% in 2 inch[/table_cell][table_cell]14[/table_cell][/table_row][/table_body][/table]
  • Hardness conversions are approximate
  • Test values are nominal approximations and depend on specimen size and orientation.
  • Cold worked and precipitation hardened condition
  • Volume basis
[table][table_head][table_row][table_heading_cell]Thermal Conductivity[/table_heading_cell][table_heading_cell]BTU/ (sq ft-ft-hr-F)[/table_heading_cell][table_heading_cell]120-150[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Specific Heat[/table_cell][table_cell]BTU/lb/ºF @ 68F[/table_cell][table_cell].10[/table_cell][/table_row][table_row][table_cell]Thermal Expansion[/table_cell][table_cell]Per °F from 68 F to 392 F[/table_cell][table_cell].0000098[/table_cell][/table_row][table_row][table_cell]Density[/table_cell][table_cell]lb/cu in @ 68 F [/table_cell][table_cell].317[/table_cell][/table_row][table_row][table_cell]Electrical Conductivity* (Annealed)**[/table_cell][table_cell]% IACS @ 68 F[/table_cell][table_cell]45-48[/table_cell][/table_row][table_row][table_cell]Modulus of Elasticity[/table_cell][table_cell]KSI[/table_cell][table_cell]19,000[/table_cell][/table_row][/table_body][/table]
[table][table_head][table_row][table_heading_cell]Capacity for being cold worked[/table_heading_cell][table_heading_cell]Excellent[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Capacity for being hot formed[/table_cell][table_cell]Good[/table_cell][/table_row][table_row][table_cell]Hot forgeability rating (forging brass=100)[/table_cell][table_cell]-[/table_cell][/table_row][table_row][table_cell]Hot working temperature[/table_cell][table_cell]1200-1625 F or 650-765 C[/table_cell][/table_row][table_row][table_cell]Machinability rating (Free Cutting Brass=100)[/table_cell][table_cell]-[/table_cell][/table_row][table_row][table_cell]Solution heat treating temperature[/table_cell][table_cell]1675-1725 F or 900-950 C[/table_cell][/table_row][table_row][table_cell]Suitability for being joined by:[/table_cell][table_cell]Soldering/Good,
Brazing/Good,
Oxyacetylene Welding/Not Recommended,
Gas Shielded Arc Welding/Fair,
Coated Metal Arc Welding/Fair[/table_cell][/table_row][table_row][table_cell]Resistance Welding[/table_cell][table_cell]Spot/Good, Seam/Fair, Butt/Fair[/table_cell][/table_row][/table_body][/table]

CCNB MATERIAL SPECIFICATION

[table][table_head][table_row][table_heading_cell]Material Designation[/table_heading_cell][table_heading_cell]CCNB[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Material Designation, EN standard[/table_cell][table_cell]CuCo1NiBe[/table_cell][/table_row][table_row][table_cell]Material No., EN Standard[/table_cell][table_cell]CW103C[/table_cell][/table_row][table_row][table_cell]Material no., former DIN standard[/table_cell][table_cell]None. Comparable to 2.1285 (CuCo2be)[/table_cell][/table_row][table_row][table_cell]Material No., UNS system (ASTM)[/table_cell][table_cell]None. Comparable to C17500 (CuCo2be)[/table_cell][/table_row][table_row][table_cell]Classification RWMA (USA)[/table_cell][table_cell]Class 3[/table_cell][/table_row][/table_body][/table][table][table_head][table_row][table_heading_cell]Information about standards[/table_heading_cell][table_heading_cell][/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]EN[/table_cell][table_cell]EN12163 bars), EN12167 (Flat bar, profiles), EN12420 (Forged products)[/table_cell][/table_row][table_row][table_cell]DIN(former)[/table_cell][table_cell](DIN17666/DIN17672)[/table_cell][/table_row][table_row][table_cell]ASTM [/table_cell][table_cell](B441. B534)[/table_cell][/table_row][/table_body][/table]

Description of material

CCNB is thermally precipitation hardenable copper alloy. In heat treated condition, the alloy combines high hardness and high resistance to heat with good electrical and thermal conductivity.
The technological properties are improved by replacing part of the cobalt according to former DIC standard CuCo2Be (2.1285) by nickel.

Material Properties

Chemical Composition in % of weight (guaranteed ranges)

[table][table_head][table_row][table_heading_cell]Co[/table_heading_cell][table_heading_cell]Ni[/table_heading_cell][table_heading_cell]Be[/table_heading_cell][table_heading_cell]Fe[/table_heading_cell][table_heading_cell]Si[/table_heading_cell][table_heading_cell]others total[/table_heading_cell][table_heading_cell]Cu[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]0.8-1.3[/table_cell][table_cell]0.8-1.3[/table_cell][table_cell]0.4-0.7[/table_cell][table_cell]max. 0.2[/table_cell][table_cell]max. 0.2[/table_cell][table_cell]0.5[/table_cell][table_cell]Remainder[/table_cell][/table_row][/table_body][/table]

Agreed properties at 20°C (Condition: hardened, solution heat treated respectively)

[table][table_head][table_row][table_heading_cell]Condition[/table_heading_cell][table_heading_cell][/table_heading_cell][table_heading_cell]Hardened[/table_heading_cell][table_heading_cell]Solution heat treated[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Hardness Brinell HB[/table_cell][table_cell][/table_cell][table_cell]min. 220 *)[/table_cell][table_cell]max. 110 *)[/table_cell][/table_row][table_row][table_cell]Electrical Conductivity [/table_cell][table_cell]mS/m[/table_cell][table_cell]min. 25[/table_cell][table_cell]max. 13[/table_cell][/table_row][table_row][table_cell]Electrical Conductivity[/table_cell][table_cell]% IACS[/table_cell][table_cell]min. 43.0[/table_cell][table_cell]max. 22.5[/table_cell][/table_row][/table_body][/table]

Associated properties at 20°C (Condition: hardened, solution heat treated respectively)

[table][table_head][table_row][table_heading_cell]Condition[/table_heading_cell][table_heading_cell][/table_heading_cell][table_heading_cell]Hardened[/table_heading_cell][table_heading_cell]Solution heat treated[/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Tensile Strength[/table_cell][table_cell]1)N/mm2(Mpa)[/table_cell][table_cell]min. 680[/table_cell][table_cell]max. 500[/table_cell][/table_row][table_row][table_cell]0.2% yield strength [/table_cell][table_cell]1) N/mm2(Mpa)[/table_cell][table_cell]min. 550[/table_cell][table_cell]max. 400[/table_cell][/table_row][table_row][table_cell]Elongation[/table_cell][table_cell]%[/table_cell][table_cell]min. 8[/table_cell][table_cell]max. 25[/table_cell][/table_row][/table_body][/table]

Material information (nominal values)

[table][table_head][table_row][table_heading_cell]Elastic modulus[/table_heading_cell][table_heading_cell]N/mm2(Mpa)[/table_heading_cell][table_heading_cell]135,000[/table_heading_cell][table_heading_cell][/table_heading_cell][/table_row][/table_head][table_body][table_row][table_cell]Softening temperature [/table_cell][table_cell]°C[/table_cell][table_cell]480[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Specific weight[/table_cell][table_cell]g/cm3[/table_cell][table_cell]8.85[/table_cell][table_cell][/table_cell][/table_row][table_row][table_cell]Thermal Conductivity[/table_cell][table_cell]W/mK[/table_cell][table_cell]230-250[/table_cell][table_cell](Average 20°C-300°C)[/table_cell][/table_row][table_row][table_cell]Thermal expansion coefficient[/table_cell][table_cell]x 10-6/°K[/table_cell][table_cell]17.2[/table_cell][table_cell](Average 20°C-300°C)[/table_cell][/table_row][table_row][table_cell]Melting interval[/table_cell][table_cell]°C[/table_cell][table_cell]1000-1030[/table_cell][table_cell][/table_cell][/table_row][/table_body][/table]

Hot  forming

CCNB is suitable for hot forming at temperatures of about 900-700°C. After forming, quick cooling in water is recommended.

Advice: after a hot forming executed by the customer, the properties of CCNB will normally no longer be achieved.

Cold forming

CCNB in hardened condition is not intended for cold forming. In case, a cold forming has to be executed, CCNB in solution heat treated condition has to be used. After forming, as a rule, the part has to be heat treated.

Heat treatment

A heat treatment changes the agreed properties. If a heat treatment is executed after supply of the material, we cannot guarantee any properties.

Advice for heat treatment (they always depend to a large degree on the kind and the function of the furnace)

Solution heat treatment: 920-970°C, about 30 minutes followed by quenching in water

Hardening: 460-520°C, 2-5 h followed by cooling at the air

Machining

CCNB is very suitable for machining. We recommend hard metal cutting tools with positive cutting geometry.

For drilling, attention must be paid to good removal of chips. Cooling with emulsion is recommended. In case of dry machining, this has to be done with strong suction. Outgoing air has to be cleaned by a particle filter.

Thread moulding is possible to a limited extent. Bigger inside threads should be executed by circular thread milling.

Joining

CCNB is suitable for soft as well as hard soldering. Concerning hard soldering (even at limited time of effect of the temperature), a loss in hardness in the area of heating is to be expected. A very low melting silver brazing should be used. CCNB is suited for welding. Attention must be paid to sufficient extraction and filtering of welding fume.

Application examples

Electrodes, holders, shafts for spot, seam, butt and projection welding of (preferably) materials of higher strength and greater electrical resistance (e.g. stainless and heat-resistant steels), welded wire mesh.

Moulds for non -ferrous metal casting, inserts in steel molds at spots requiring a faster cooling speed.

Die casting pistons for horizontal cold chamber casting machines for light metal casting.

Thermally highly strained parts susceptible to fire cracks.