CDA 172 C17200 Beryllium Copper Coils ASTM B194 For Switch Relay Parts

Place of Origin China
Certification ISO,SGS
Model Number CDA 172 (C17200)
Minimum Order Quantity 50
Price 30USD
Packaging Details in coil packed into wooden case
Delivery Time 10~15days
Payment Terms L/C, T/T, Western Union
Supply Ability 200T/Month

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Product Details
Name Copper Beryllium Coils CDA 172 (C17200) Max Coil Wt. 2T
Thinnest Thick. 0.02mm Max Width 305mm
Standard ASTM B194, SAE J463, J461 Hardness <130
Safe Handling No Special Health Risk. Machining Property Good
Surface Bright/Polished Flatness Good
State Annealed (A Or TB00) Application For Switch And Relay Parts
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C17200 Beryllium Copper Coils


CDA 172 Beryllium Copper Coils ASTM B194


beryllium copper plate

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Product Description

Copper Beryllium Coils CDA 172 (C17200) ASTM B194 For Switch And Relay Parts

Product Normal Description:

Product Name: Copper beryllium Coils

Grade: CDA 172 (C17200)

Standard: ASTM B194, SAE J463, J461

Product Specification: 0.1mm-0.5mm

State: Annealed (A or TB00)

Typical Application: For Switch And Relay Parts

Product Brand: CUBERYLLIUM®


Introduction of Copper Beryllium CDA172(C17200):

C17200 (Class 4) beryllium copper alloys are ductile and produced in mill hardened and heat treatable tempers. C17200 copper alloy has extremely high rigidity and ultimate tensile strength. RWMA Class 4 Beryllium Copper is unique in that it is availabel in heat treatable tempers.


Alloys are used in a wide range of applications requiring high strength and stiffness with good conductivity. These alloys are used for all applications, which require high strength, stiffness and good conductivity. This copper type is commonly used with electrical and electronic connectors, current-carrying springs, precision screw machined parts, welding electrodes, bearings, plastic molds and corrosion resistant components.


The chemical compound of C17200 (Class 4) copper alloy is 97.9% copper, 1.80-2.00% beryllium, 0.20% cobalt.

The physical properties of C17200 are that its density is 8.25 grams per cubic centimeter, and its melting point is 866 degrees celsius. The tensile strength of C17200 copper is over 1380 MPa (200 ksi).


Temper Designations of Copper Beryllium Strip CDA 172 (C17200):

Cuberyllium Designation ASTM Mechanical and Electrical Properties of Copper Beryllium Strip
Designation Description Tensile Strength
Yield Strength 0.2% offset Elongation Percent HARDNESS
B or C Scale
Electrical Conductivity
(% IACS)
A TB00 Solution Annealed 410~530 190~380 35~60 <130 45~78HRB 15~19
1/2 H TD02 Half Hard 580~690 510~660 12~30 180~220 88~96HRB 15~19
H TD04 Hard 680~830 620~800 2~18 220~240 96~102HRB 15~19

Mill hardened
930~1040 750~940 9~20 270~325 28~35HRC 17~28
SHM TM05 1030~1110 860~970 9~18 295~350 31~37HRC 17~28
XHM TM06 1060~1210 930~1180 4~15 300~360 32~38HRC 17~28


The most important Technology of CUBERYLLIUM ®

A: Heat treatment

Heat treatment is the most important process for this alloy system. While all copper alloys are hardenable by cold working, beryllium copper is unique in being hardenable by a simple low temperature thermal treatment. It involves two basic steps. The first is called solution annealing and the second, precipitation or age hardening.

B: Solution Annealing

For the typical alloy CuBe1.9 (1.8- 2%) the alloy is heated between 720°C and 860°C. At this point the contained beryllium is essentially “dissolved” in the copper matrix (alpha phase). By rapidly quenching to room temperature this solid solution structure is retained. The material at this stage is very soft and ductile and can be readily cold worked by drawing, forming rolling, or cold heading. The solution annealing operation is part of the process at the mill and is not typically used by the customer. Temperature, time at temperature, quench rate, grain size, and hardness are all very critical parameters and are tightly controlled by ohmalloy.

C: Age Hardening

Age hardening significantly enhances the material’s strength. This reaction is generally carried out at temperatures between 260°C and 540°C depending on alloy and desired characteristics. This cycle causes the dissolved beryllium to precipitate as a beryllium rich (gamma) phase in the matrix and at the grain boundaries. It is the formation of this precipitate which causes the large increase in material strength. The level of mechanical properties attained is determined by the temperature and time at temperature. It should be recognized that beryllium copper has no room temperature aging characteristics.

Size Available


Standard Tolerance of Copper Beryllium Strip CDA 172 (C17200):

Tolerance Sheet
Standard Tolerance
over incl. plus or minus
0.03 0.08 0.003
0.08 0.1 0.004
0.1 0.15 0.005
0.15 0.2 0.006
0.2 0.25 0.007
0.25 0.4 0.008
0.4 0.55 0.009
0.55 0.7 0.01
0.7 0.9 0.015
0.9 1.5 0.025
Note: Tolerances apply to rolled and mill hardened strip.


Product Photos:

CDA 172 C17200 Beryllium Copper Coils ASTM B194 For Switch Relay Parts 0



Q1:Could you produce Beryllium Copper strip by Mill Hardened process.
A1:Yes, we could produce AM(TM00), 1/2HM(TM01).HM(TM04) XHM(TM06) XHMS(TM08).,we are the only factory could do harden strip in China.

Q2: What’s the advantages the Beryllium Copper of CUBERYLLIUM®.
A2: 1: The Biggest Coil weight could be reach 1200kg/Coil

2:We are the only one who melting by Vacuum semi-Continuous Furnace.

3:Surface further polishing for top clients.

Q3: Why you melting by Vacuum semi-Continuous Furnace.
A3:Could be get the Cast ingot without gas,smaller segregation, Grain Refinement

Q4: What's the payment terms?
A4: We accept T/T, L/C, Paypal etc. It can be negotiated when the amount is different.