CDA 173 Beryllium Bronze Wires With Good Processing Performance And
High Thermal Conductivity
Product Description:
Product Name: Beryllium bronze wires
Grade: CDA 173
State: A(TB00),1/4 H(TD01),1/2 H(TD02),3/4H(TD03),H(TD04)
Available Products(Forms): round wires, flat wires, coils
Size: Custom Diameter & Size, Random Mill Lengths
Brand: CUBERYLLIUM®
CDA 173 Beryllium Bronze Wires International Specification:
Wires: ASTM B197, QQ-C-530, EN 12166
European Standards: CuBe2Pb, Alloy M25, UNS.C17300, DIN.2.1248,
CW102C to EN
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 of CDA 173 Beryllium Bronze Alloys:
| 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 |
Note: Copper plus additions equal 99.5% minimum.
Typical Physical Properties of CDA 173 Beryllium Bronze Alloys:
| 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 |
Mechanical and Electrical Properties of CDA 173 Beryllium Bronze
Wires:
| 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) |
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:
Package Informance:
FAQ:
Q1:What's your advantages?
A1:Honest business with competitive price and professional service
on export process.
Q2: How I believe you?
A2: We consider honest as the life of our factory. Usually, we
accept the payment term, 30% in advance by T/T, the balance will be
paid according the product photos and videos.
Q3: Can you give warranty of your products?
A3:Yes, we extend a 100% satisfaction guarantee on all items. Plz
feel free to feedback immediately if you are not pleased with our
quality or service.
