CUBERYLLIUM Brand 3mm C17300 (CuBe2Pb) Wire For automatic machining operations
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 ®-173 also named -C17300 (CDA 173) offers the strength properties of C17300 with the added benefit of
being “free machining”. C17300 rod and wire contain a small amount
of lead to provide an alloy tailored for automatic machining
operations. Lead promotes formation of finely divided chips thus
extending cutting tool life.
Chemical Composition:
| CUBERYLLIUM® Brand | UNS-Number | Beryllium | Cobalt
+ Nickel | +Cobalt
+ Nickel
+ Iron | Pb | Copper |
| Cuberyllium-C173 | C17300 | 1.80-2.00 | 0.20 min | 0.6 max | 0.2～0.6 | Balance |
Typical Physical Properties:
| CUBERYLLIUM® | US Customary | Metric |
| Melting Point - Liquidus | 1800 F | 982 C |
| Melting Point - Solidus | 1590 F | 866 C |
| Density | 0.298 lb/in3 at 68 F | 8.25 gm/cm3 @ 20 C |
| Specific Gravity | 8.26 | 8.26 |
| Electrical Resistivity | 46.20 ohms-cmil/ft @ 68 F | 7.68 microhm-cm @ 20 C |
| Electrical Conductivity | 22 %IACS @ 68 F | 0.129 MegaSiemens/cm @ 20 C |
| Thermal Conductivity | 62 Btu . ft/(hr . ft2 . oF)at 68F | 107.3 W/m . oK at 20 C |
| Modulas of Elasticity in Tension | 18500 ksi | 128000 MPa |
| Modulus of Rigidity | 7300 ksi | 50330 MPa |
| Specific Heat Capacity | 0.090 Btu/lb/å¡F at 68 F | 377.1 J/kg . å¡K at 293 K |
Common temper we supply
| Alloy | Temper (*) | Heat Treatment | Tensile Strength ksi | Elongation percent | Electrical Conductivity percent IACS |
CUBERYLLIUM
173 | 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
173 | 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) |
| Product Type | Temper Type |
| Bar | ASTM B196 |
| Military Mil-C-21657 |
| Rod | ASTM B196 |
| Military Mil-C-21657 |
| Wire | ASTM B197 |
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 |
Factory's Photo:
Application
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.
