C17200 Beryllium Bronze Sheet Plate 27mmt x 64mmw x 800mml With TB00 State
Product Normal Description:
| Product Name | Beryllium bronze sheet plate |
| Grade | C17200 |
| End Product Form | Sheet/Plate |
| Standard | ASTM B194 |
| State of product | TB00 |
| Size: | 27mmt x 64mmw x 800mml |
| Application | Electrical Industry |
| Product Brand | CUBERYLLIUM® |
Chemical Composition of C17200 Beryllium Bronze Alloy:
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 C17200 Beryllium Bronze 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 |
Temper Designations of C17200 Beryllium Bronze Plate:
| Mechanical and Electrical Properties of C17200 Sheet/Plate |
| CUBERYLLIUM | ASTM | Heat Treatment | Thickness (mm) | Tensile Strength (Mpa) | Elongation Percent | HARDNESS Rockwell B or C Scale | Electrical Conductivity
(% IACS) |
| Designation | Designation |
| A | TB00 | | All Size | 400~580 | 20~60 | B45-85 | 15～19 |
| H | TD04 | ＜10 | 600~880 | 8~20 | B91-103 | 15～19 |
| 10~25 | 600~850 | 8~20 | B90-102 | 15 ~ 19 |
| 25~50 | 580~820 | 8~20 | B88-102 | 15 ~19 |
| ＞50 | 580~820 | 8~20 | B88-102 | 15 ~19 |
| AT | TF00 |
3 hr 315℃
| All Size | 1120~1358 | 3~10 | C36-41 | 22 ~ 28 |
| HT | TH04 | 2 hr 315℃ | ＜10 | 1200~1450 | 1~5 | C38-45 | 22 ~ 28 |
| 10~25 | 1200~1500 | 1~5 | C38-44 | 22 ~ 28 |
| 25~50 | 1200~1450 | 2~5 | C37-43 | 22 ~ 28 |
| ＞50 | 1100~1350 | 2~5 | C36-42 | 22 ~ 28 |
Applications of C17200 Beryllium Bronze Alloy:
| ELECTRICAL: |
| Electrical Switch / Relay Blades | Fuse Clips | Switch Parts |
| Relay Parts | Connectors | Spring Connectors |
| Current-Carrying | Contact Bridges | Belleville Washers |
| Navigational Instruments | Clips | |
| FASTENERS: |
| Washers | Fasteners | Lock Washers |
| Retaining Rings | Roll Pins | Screws |
| Bolts | | |
| INDUSTRIAL: |
| Pumps | Springs | Electrochemical |
| Shafts | Non-Sparking Safety Tools | Flexible Metal Hose |
| Housings for Instruments | Bearings | Bushings |
| Valve Seats | Valve Stems | Diaphragms |
| Springs | Welding Equipment | Rolling Mill Parts |
| Spline Shafts | Pump Parts | Valves |
| Bourdon Tubes | Wear Plates on Heavy Equipment | Bellows |
Product Photos:
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.
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C17200 Beryllium Bronze Sheet Plate 27mmt X 64mmw X 800mml With TB00 State Images
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