BrB2 TD02 C17200 Beryllium Copper Rods Bars Good Electrical Conductivity

BrB2 (UNS.C17200) Copper-Beryllium Rods And Bars With Good Electrical Conductivity

Note:

ASTM: American Society for Testing and Materials

SAE: Society of Automotive Engineers

AMS: Aerospace Materials Specification(Published by SEA)

RWMA: Resistance Welder Manufacturers' Association

Note: Unless otherwise specified, material will be produced by ASTM.

CUBERYLLIUM® manufactures copper beryllium in several distinct compositions.

These fall into two categories: high strength beryllium copper alloys 172(UNS. C17200),173(UNS. C17300),170(UNS. C17000), and copper alloys selected for high conductivity 751(UNS. 17510),750(UNS. 17500),741(UNS. 17410).

We also Supply Master alloy : CuBeryllium-200, CuBeryllium-275, CuBeryllium-350 and Cuberyllium-400 to global factory.

CUBERYLLIUM ®-172 also named Cube2--UNS. 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 1360Mpa, 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.

Chemical Composition of BrB2 (UNS.C17200) Copper-Beryllium Alloys (CUBERYLLIUM ®-172):

Product Grade: CUBERYLLIUM ®-172(UNS. C17200)

Beryllium(Be): 1.80-2.00%

Cobalt(Co) + Nickel(Ni): 0.20% Min

Cobalt(Co) + Nickel(Ni) + Iron(Fe): 0.60% Max

Lead: 0.02% Max

Copper(Cu): Balance

Note: Copper plus additions equal 99.5% Minimum.

Typical Physical Properties of BrB2 (UNS.C17200) Copper-Beryllium Alloys (CUBERYLLIUM ®-172):

Mechanical and Electrical Properties of BrB2 (UNS.C17200) Copper-Beryllium Rods and Bars:

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.

Product Photos:

Applications of BrB2 (UNS.C17200) Copper-Beryllium Alloys (CUBERYLLIUM ®-172):

CUBERYLLIUM ®-172 is usually used for electrical industry, fasteners and industrial.

Electrical Industry: electrical switch and relay blades(switch parts, relay parts), clips, fuse clips, connectors, spring connectors, navigational indstruments, contact bridges, belleville washers;

Fasteners: washers, lock washers, fasteners, retaining rings, roll pins, screws, bolts;

Industrial: pump parts, springs, electrochemical, spline shafts, non sparking safety tools, flexible metal hose, housings for indtruments, bearings, bushings, valve seats, valve stems, disphragms, springs, welding equipment, rolling mill parts, valves, bourdon tubes, wear plates on heavy equipment, bellows.