Standard Tolerance Beryllium Copper Strips C1720R 0.35mmt X 38mmw
Beryllium Copper Strips C1720R-1/2H Size 0.35mmt x 38mmw with Standard Tolerance
Product Normal Description:
| Product Name | Beryllium copper strips |
| Grade | C1720R |
| End Product Form | in form strip |
| Standard | ASTM B194 |
| State of product | 1/2H |
| Specification |
Thickness: 0.35mm Width: 38mm |
| Application | Electrical industry |
Introduction of Beryllium Copper Alloy C1720:
Standards: ASTM B196, AMS 4533, SAE J461, RWMA CLASS IV, CuBe2 2.1247
C17200 is also known as Alloy 25 and is the most commonly utilized beryllium copper alloy and is notable for exhibiting the highest strength and hardness compared to commercial copper alloys. Its strength and hardness is similar to that of steel. C17200 copper's ultimate tensile and Rockwell hardness properties in a peak aged condition are in the 200 ksi range and RC 45 respectively (electrical conductivity 22% IACS minimum).
Chemical Composition of Beryllium Copper Alloy C1720:
| Numbering | Be | Co+Ni | Cu | Fe | Pb | Si | Al |
| C17200 | 1.8-2.0 | ≥0.2 | Margin | 0.15 | - | 0.15 | 0.15 |
Tipical Application of Beryllium Copper Alloy C1720:
| 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 |
| ORDINANCE: | ||
| Firing Pins | ||
| OTHER: | ||
| Tools | ||
Standard Tolerance of Beryllium Copper Alloy C1720:
| Tolerance Sheet | ||
| (MM) | ||
| Strip Thickness |
CuBeryllium® Standard Tolerance |
|
| over | incl. | plus or minus |
| 0.03 | 0.08 | 0.003 |
| 0.08 | 0.1 | 0.004 |
| 0.1 | 0.15 | 0.005 |
| 0.15 | 0.2 | 0.006 |
| 0.2 | 0.25 | 0.007 |
| 0.25 | 0.4 | 0.008 |
| 0.4 | 0.55 | 0.009 |
| 0.55 | 0.7 | 0.01 |
| 0.7 | 0.9 | 0.015 |
| 0.9 | 1.5 | 0.025 |
| Note: Tolerances apply to rolled and mill hardened strip. | ||
Product Photo of Beryllium Copper Alloy C1720R:
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.
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