CUBERYLLIUM-C751 (C17510) Dia20mm Rod by ASTM B441 for Corrosion resistant
components
CUBERYLLIUM® manufactures copper beryllium in several distinct compositions.
These fall into two categories: alloys selected for high strength
(Alloys 172,173,170) and alloys selected for high conductivity
(Alloys 751,750,741). And Gost standard QBe2,QBe1.9Ti for Russia
Market. Also Supply Master alloy : CuBeryllium-200;
CuBeryllium-275);CuBeryllium-350 and Cuberyllium-400 to global
factory.
CUBERYLLIUM ®-751 also named -C17510 (CDA 751) Alloy 751 is a high conductivity copper beryllium alloy used in
applications requiring a combination of high thermal conductivity
with moderate strength. Alloy 751, supplied with certified
mechanical properties, is fully heat treated and no additional
treatment is required. Alloy 751 is nonmagnetic and provides
excellent resistance to thermal fatigue.
Chemical Composition:
| CUBERYLLIUM® Brand | UNS-Number | Beryllium | Nickel | Fe | Si | Copper |
| Cuberyllium-C751 | C17510 | 0.20-0.60 | 1.4～2.2 | <0.1 | <0.2 | Balance |
Related material specifications
ASTM B441 ASTM B534 SAE J461. SAE J463
Typical Physical Properties:
| PRODUCT PROPERTY | US CUSTOMARY | METRIC |
| Coefficient of Thermal Expansion | 9.8 . 10-6 per oF (68-392 F) | 17.6 . 10 6 per C (20-200 C) |
| Density | 0.317 lb/in3 @ 68 F | 8.77 gm/cm3 @ 20 C |
| Electrical Conductivity | 48 %IACS @ 68 F | 0.281 MegaSiemens/cm @ 20 C |
| Electrical Conductivity | 45 %IACS @ 68 F | 0.263 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 22.8 ohms-cmil/ft @ 68 F | 3.79 microhm-cm @ 20 C |
| Melting Point Liquid US | 1955 F | 1068 C |
| Melting Point Solid US | 1885 F | 1029 C |
| Modulas of Elasticity in Tension | 19200 ksi | 132400 MPa |
| Modulas of Rigidity | 7500 ksi | 51710 MPa |
| Specific Gravity | 8.77 | 8.77 |
| Specific Heat Capacity | 0.1 Btu/lb/F @ 68 F | 419.0 J/kg . K at 293 K |
| Thermal Conductivity | 120.0 Btu . ft/(hr . ft2 . F) @ 68 F | 207.7 W/m . K at 20 C |
Typical Applications
| • Bearings and bushes |
| • Plastic moulds |
| • Corrosion resistant components |
| • Current carrying springs |
| • Welding electrodes |
| • Electrical and electronic connectors |
Product Photo:
Weldability
Soldering, brazing, gas shielded arc welding, coated metal arc
welding, spot welding, seam welding and butt welding are all
recommended
Corrosion Resistance
Alloy 751’s corrosion resistance is similar to pure copper. It
resists corrosion in sea water, most organic solutions, non-
oxidizing acids, and dilute alkalis. Alloy 751 is not subject to
hydrogen embrittlement, and it resists stress corrosion cracking in
sulfide and chloride solutions. Alloy 751 is not recommended for
use with ammonium hydroxide or strongly oxidizing acids.
Fabrication
Key Technology of Beryllium Copper(Heat treatment)
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.
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.
