Alloy 25(UNS.C17200) Copper Beryllium Round Wires On Spools And In Coils
Product Specification:
UNS/CDA: C17200/ 172
DIN/EN: DIN2.1247 /CW101C
Others international specification: Alloy 25, JIS C1720, CuBe2, BeCu, BrB2
Chemical composition:
Be: 1.80-2.00%
Co +Ni: 0.20% Min
Co+Ni+Fe: 0.60% Ma
Cu: Balance
Cu+Be+Co+Ni+Fe: 99.5% Min
Typical Physical Properties of Alloy 25(UNS.C17200) Copper Beryllium Alloy:
| Density (g/cm3): | 8.36 |
| Density before age hardening (g/cm3): | 8.25 |
| Elastic Modulus (kg/mm2 (103)): | 13.4 |
| 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 |
Mechanical and Electrical Properties of Alloy 25(UNS.C17200) Copper Beryllium Round Wires:
| Alloy | Temper (*) | Heat Treatment | Tensile Strength Mpa | Elongation percent | Electrical Conductivity percent IACS |
CUBERYLLIUM
172 | A | / | 400～580 | 30-60 | 15-19 |
| (TB00) |
| 1/4 H | / | 570～795 | 3~25 | 15-19 |
| (TD01) |
| 1/2 H | / | 710～930 | 2~15 | 15-19 |
| (TD02) |
| 3/4 H | / | 840～1070 | 2~8 | 15-19 |
| (TD03) |
| H | / | 915～1140 | 1~6 | 15-19 |
| (TD04) |
CUBERYLLIUM
172 | AT | 3 hr 315℃ | 1050~1380 | 3 min | 22-28 |
| (TF00) |
| 1/4 HT | 2 hr 315℃ | 1150~1450 | 2 min | 22-28 |
| (TH01) |
| 1/2 HT | 1.5hr 315℃ | 1200~1480 | 2 min | 22-28 |
| (TH02) |
| 3/4 HT | 1.0 hr 315℃ | 1250~1585 | 2 min | 22-28 |
| (TH03) |
| HT | 1.0hr 315℃ | 1300~1585 | 1 min | 22-28 |
| (TH04) |
International Specification of Alloy 25(UNS.C17200) Copper Beryllium Alloy:
| Product Type | Temper Type |
| Bar | ASTM B196 |
| Military Mil-C-21657 |
| Rod | ASTM B196 |
| Military Mil-C-21657 |
| Wire | ASTM B197, AMS4725, SAE J461,463, RWMA Class 4 |
| European Standards | CuBe2, Alloy 25, 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 SEA)
RWMA: Resistance Welder Manufacturers' Association
Note: Unless otherwise specified, material will be produced by ASTM.
Key Technology of Beryllium Copper(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.
Solution Annealing
For the typical alloy CuBe2Pb) 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.
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.
Fabrication
| JOINING TECHNIQUE | SUITABILITY |
| Brazing | Good |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Excellent |
| Capacity for Being Hot Formed | Good |
| Coated Metal Arc Welding | Good |
| Gas Sheilded Arc Welding | Good |
| Machinability rating | 50 |
| Oxyacetylene Welding | Not Recommended |
| Seam Weld | Fair |
| Soldering | Good |
| Spot Weld | Good |
Product Photo:
Application of Alloy 25(UNS.C17200) Copper Beryllium Alloy:
Our alloys combine a range of properties particularly suited to meet the exacting requirements of many applications in the automotive, electronic, aeronautical, Oil&Gas, watch, electro-chemical industries, etc. Beryllium Copper is widely used in those fields as contact springs in various applications like connectors, switches, relays, etc
FAQ:
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.
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Alloy 25 UNS C17200 Beryllium Copper Wires On Spools In Coils Images
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