| Chemical Compositions of RWMA Materials Group A - Copper Base Alloys | ||||||
| Standard | Grade | Description | Cu | Co | Ni | Be |
| ASTM B441 | C17510 / CuNi2Be / Alloy 3 | Nickel Beryllium Copper | Balance | 0.3 | 1.4-2.2 | 0.2 - 0.6 |
| ASTM B441 | C17500 / CuCo2Be / Alloy 10 | Nickel Beryllium Copper | Balance | 2.4-2.7 | - | 0.4 - 0.7 |
Cu: Copper
Ni: Nickel
Be: Beryllium
Typical usages of RWMA Class 3 copper alloy: C17510 is recommended for spot and seam welding of high resistance alloys such as stainless steel. Other uses include flash welding dies, backup bars, and projection welding electrodes.
| GENERAL USES OF C17510 | |||
| Back-up Electrodes | Bushings | Caps & Shanks | Casting Wheels & Dam Blocks |
| Continuous Casting Molds | Cross Wire Welding Electrodes & Components | Dies & Fixtures | Electrode Holders and Adaptors |
| Electrical & Mechanical Power Components | End Rings & Rotor Bar | Flash & Butt Welding Dies | Injection Blow Molds & Dies |
| Joining Components | Nut & Stud Welding Electrodes | Permanent Molds | Pistons |
| Plunger Tips | Resistance Welding Electrodes | Seam Weld Wheels | Shafts |
| Spot Welding Electrodes | Sputtering Target Backing Plates | Threaded Electrodes | Welding Arms |
| Welding Blocks | Welding Connectors | Welding Platens | |
| Item Name: | Copper Nickel Beryllium Alloy C17510, ASMT B441 |
| RWMA (Resistance Welding Manufacturing Alliance) Class: | Class 3 |
| Principal Element: | Cu, Ni, Be |
| Minimum Hardness Rockwell (up to 1" dia.): | HRB 90 |
| Minimum Electrical Conductivity (% IACS): | 45 |
| Metal Stock Availability: | Stocked in mill form or precision cut to your specifications. |
| Shape: | Bar Hexagon Octagon Plate Rectangle Round Special Square |
| Length for Round, Hexagon, Square, Octagon, Rectangle, Special Shapes: | All sizes in standard lengths up to 12 ft Special Sizes |
| Diameter for Round, Hexagon, Square, Octagon, Rectangle, Special Shapes: | 1/8 to 10 in Special Sizes |
| Thickness for Plate: | 1/8 to 6 in Special Sizes |
Other References For C17510: RWMA Class 3 Alloy, Class 3 Copper Alloy, Nickel Beryllium Copper, Copper Nickel Beryllium Alloy, CuNiBe Copper, CuNiBe Alloy, Beryllium Copper Supplier, CDA C17510, and UNS C17510, Alloy 3, alternative for C17500.