UNS.C17500 Cobalt Beryllium Copper

It takes an uncommon amount of knowledge and experience to create a thoroughly reliable supply chain for beryllium copper stock. That's why leading manufacturers turn to PTJ for beryllium copper stock that delivers both needed quantities and essential quality without fail.
CuCo2Be—C17500 (CDA 175) Cobalt Beryllium Copper is primarily utilized in the industry applications that require most highly thermal or electrical conductivity, which features a cobalt alloying addition (2.40-2.70%).
C17500 also Offers good strength and hardness characteristics coupled with conductivity in the range of 45-60 percent of copper with ultimate tensile and hardness properties approaching 140 ksi and RB 100 respectively.Alloy 10 is available in wrought product forms and can be supplied fully hardened by our producing mill.

Typical Application for CuCo2Be - C17500 Beryllium Copper Alloys

C17500/C17510 offers a combination of high electrical and thermal conductivity with good strength compared to most copper based alloys. C17500 alloy is the mirror image of alloy C17510 in terms of its properties and characteristics. The beryllium copper differ in that C175 specifies a cobalt alloying addition (2.40-2.70%) and alloy 17510 specifies a nickel alloying addition (1.40-2.20%), but their performance are the same.
  • Electrical Industry: Switch Parts, Relay parts, Electrical Connectors, Fuse Clips, Contact Bridges, Electrical Motor Components, Navigational Instruments, Electrical Switch and Relay Blades. Fasteners: Washers, Fasteners, Lock Washers, Retaining Rings, Roll Pins, Screws, Bolts
  • Industrial: Bushings, Non-Sparking Safety Tools, Shafts, Pumps, Springs, Welding Equipment, Rolling Mill Parts, Spline Shafts, Pump Parts, Valves, Bourdon Tubes, Bellows, Electrochemical Springs, Flexible Metal Hose
  • Available Sizes: Custom Diameter & Sizes, Random Mill lengths
  • Available Products (forms): Round bars, Round wires, Round tube Flat bars, Square bars, Rectangular bars, Hexagon bars, Plates Custom shapes are available upon request.

C17500 Chemical Composition

Executive standard:ASTM/GB/T5233-2001/EN12163(%max., unless shown as range or min.)
NumberingBeCo+NiCuFePbSiAl
C17500 0.4-0.7 Co 2.4-2.7 Margin 0.15 - 0.15 0.15

Mechanical properties and conductivity analysis

(AT/TF00)
After precipitation heat treatment Status Tensile Strength/MPa Rockwell Hardness/B Conductivity/%IACS
A(TB00) Solution treatment state 240-380 B 50min 20
H(TD04) Solution heat treatment cold working hard state 450-550 B 60-80 20
AT(TF00) Precipitation heat treatment 690-895 92-100 45
HT(TH04) Hard and precipitation heat treatment 760-965 95-102 48

Available Status

Brush Name ASTM Name Description
A TB00 Solution annealing state (quenched state)
½H TD01 Quarter hard
½H TD02 Half hard (semi-hard)
¾H TD03 Three-quarters hard
H TD04 Hard state (full hard)
AT TF00 Standard aging heat treatment in quenched state
¼HT TH01 Quarter hard standard aging heat treatment
½HT TH02 Half-hard standard aging heat treatment
¾HT TH03 Three-quarters hard standard aging heat treatment
HT TH04 Hard standard aging heat treatment (a process of comprehensive strengthening of deformation and aging)
Note: In the Brush name:
  • "A" represents the state of solution annealing (annealed, the alloy is in the softest state, easy to be stamped and formed, and needs to be cold worked or strengthened during the direct failure period);
  • "H" stands for cold processing state (hard);
  • "T" means that the material has been aging hardened by standard heat treatment (heat treatment means the state of aging strengthening heat treatment).