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Beryllium Copper Alloy 25 / CuBe2

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A).CuBe2 – UNS. C17200 (Alloy 25) Details
C17200 Beryllium Copper Alloys Rods
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 Beryllium Copper Alloys Rods:
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

Available Products (forms):
Rod, Bar, Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars, Solid bars, Hollow bar, Pipes
Custom shapes are available upon request.

B).
CuBe2 - C17200 (Alloy 25) Beryllium Copper Rod
Chemical Composition:
Be: 1.85-2.10%
Co+Ni: 0.20% Min.
Co+Ni+Fe: 0.60% Max.
Cu: Balance
Note: Copper plus additions equal 99.5% minimum.

C).
CuBe2 - C17200 (Alloy 25) Beryllium Copper Rod
Typical Physical Properties:
Density (g/cm3): 8.36
Density before age hardening (g/cm3): 8.25
Elastic Modulus (kg/mm2 (103)): 13.40
Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): 17 x 10-6
Thermal Conductivity (cal/(cm-s-°C)): 0.25
Melting Range (°C): 870-980

Note:
1). the units are based upon Metric.
2). the typical physical properties apply to age hardened products.

D).
CuBe2 - C17200 (Alloy 25) Beryllium Copper Alloys
International Specification

Rods/Bars/Tubes: ASTM B196,251,463; SAE J461,463; AMS 4533,4534,4535; AMS4650,4651;
RWMA Class 4

European Standards: CuBe2, Alloy 25, QBe2,BrB2,DIN 2.1247, CW101C to EN

Note:
ASTM: American Society for Testing and Materials
SAE: Society of Automotive Engineers
AMS: Aerospace Materials Specification (Published by SAE)
RWMA: Resistance Welder Manufacturers' Association
Note: Unless otherwise specified, material will be produced to ASTM.

E).
CuBe2 - C17200 (Alloy 25) Beryllium Copper Alloys Rods
Mechanical Properties:
The Mechanical Properties will be available on request from customers.

Most Commonly Temper Used:

Rods/Bars/Tubes: A(TB00),1/2H (TD02), H(TD04),AT(TF00),HT(TH04)

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