CuBe2 – UNS.C17200 Beryllium Copper Alloys
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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.
Excellent Properties Of Beryllium Copper Alloy
High Flexibility
High Hardness
High Strength
High Conductivity
High Thermal Conductivity
Good Molding Properties
Good Fatigue Performance
Excellent Corrosion Resistance
No Spark Impact
C17200 Chemical Composition
Executive standard：ASTM/GB/T5233-2001/EN12163(%max., unless shown as range or min.)
Numbering
Be
Co+Ni
Cu
Pb
Si
Fe
Al
C17200
1.8-2.0
≥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)
¼H
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).