CuBe2 —— UNS.C17200 Beryllium Copper Alloys

Cube2--C17200 (CDA 172) Beryllium Copper is the most commonly utilized Copper Beryllium alloy and is notable for its highest strength and hardness compared to commercial copper alloys. C17200 alloy contains appr. 2% of beryllium and achieves its ultimate tensile strength can exceed 200 ksi, while the hardness approaches Rockwell C45. Meanwhile, the electrical conductivity is a minimum of 22% IACS in the fully aged condition.C17200 also exhibits exceptional resistance to stress relaxation at elevated temperatures.

Typical Application for C17200

When used as an insert in a plastic mold, C17200 can effectively reduce the temperature of the heat concentration zone, simplifying or eliminating the need for cooling water channel design. The excellent thermal conductivity of beryllium cobalt copper is about 3-4 times better than that of mold steel. This feature can ensure rapid and uniform cooling of plastic products, reduce product deformation, unclear appearance details and similar defects, which can be significant in most cases To shorten the production cycle of products. Therefore, beryllium cobalt copper can be widely used in:
  • Electrical Industry: Electrical Switch and Relay Blades, Fuse Clips, Switch Parts, Relay parts, Connectors, Spring Connectors, Contact Bridges, Belleville Washers, Navigational Instruments, Clips Fasteners: Washers, Fasteners, Lock Washers, Retaining Rings, Roll Pins, Screws, Bolts
  • Industrial: Pumps, Springs, Electrochemical, Shafts, Non Sparking Safety Tools, Flexible Metal Hose, Housings for Instruments, Bearings, Bushings, Valve Seats, Valve Stems, Diaphragms, Springs, Welding Equipment, Rolling Mill Parts, Spline Shafts, Pump Parts, Valves, Bourdon Tubes, Wear Plates on Heavy Equipment, Bellows
  • Available Sizes: Custom Diameter & Sizes, Random Mill lengths
  • Industrial: Pumps, Springs, Electrochemical, Shafts, Non Sparking Safety Tools, Flexible Metal Hose, Housings for Instruments, Bearings, Bushings, Valve Seats, Valve Stems, Diaphragms, Springs, Welding Equipment, Rolling Mill Parts, Spline Shafts, Pump Parts, Valves, Bourdon Tubes, Wear Plates on Heavy Equipment, Bellows
  • Moulds, cores, inserts that require rapid and uniform cooling, especially high thermal conductivity, corrosion resistance and good polishing requirements;
  • The nozzle and the confluence cavity of the hot runner system in injection molding; the mold, core, and corner inserts of the TV shell in the injection mold;
  • Inserts for the clamping part, the rigid ring and the handle part of the blow mould.

C17200 Production technology advantage

  • All products of the company are made of high-quality new materials, advanced production equipment, and vacuum melting furnaces. The metal materials are smelted under vacuum conditions, which can achieve the effect of high-temperature smelting and avoid oxidation of metal and oxygen in the air. Function, quality is more guaranteed;
  • 20MN double-action reverse extruder;
  • Equipped with comprehensive testing equipment such as universal testing machine, direct reading spectrometer, etc., to strictly control the quality and inspect layer by layer.

C17200 Chemical Composition

Executive standard:ASTM/GB/T5233-2001/EN12163(%max., unless shown as range or min.)
NumberingBeCo+NiCuFePbSiAl
C17200 1.8-2.0 Co+Ni≥0.2 Margin 0.15 - 0.15 0.15

Mechanical properties and conductivity analysis

(AT/TF00)
Status Tensile Strength /MPa Yield Strength /MPa Elongation% Hardness B/C Conductivity %IACS Conductivity %IACS
A(TB00) 420-550 210-390 30-60 B 45-78 ≤140 15-19
¼H(TD01) 520-620 420-570 20-45 B 68-90 120-220 15-19
½H(TD02) 590-710 520-670 12-30 B 88-96 140-240 15-19
H(TD04) 700-850 630-810 2-18 B 96-102 ≥170 15-19
AT(TF00) 1160-1380 980-1240 3-15 C 36-42 ≥320 22-28
¼HT(TH01) 1230-1450 1050-1310 3-10 C 36-43 320-420 22-28
½HT(TH02) 1300-1520 1120-1380 1-8 C 38-44 340-440 22-28
HT(TH04) 1330-1550 1160-1450 1-6 C 38-45 ≥360 22-28

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).