ASTM B441 CuCoBe CuNiBe CuNiPbBe CuNiCo Alloy Bar
- UNS No. C17500, C17510, C17540, and C17465
- Round: Dia. 2.4 – 50mm
- Hexagonal & Octagonal: 3 – 50mm
- Square: 5-38mm
- Rectangular: T: 5-38mm x W: 5-65mm
Features
ASTM B441 CuCoBe, CuNiBe, CuNiCo Alloy Rod and Bar
- Copper-Cobalt-Beryllium Alloy Rod and Bar
- Copper-Nickel-Beryllium Alloy Rod and Bar
- Copper-Nickel-Lead-Beryllium Alloy Rod and Bar
- Copper-Nickel-Cobalt Alloy Rod and Bar
Chemical Composition (wt.%) of ASTM B441 CuCoBe CuNiBe CuNiPbBe CuNiCo Alloy Bar
| Element | UNS No. C17500 | UNS No. C17510 | UNS No. C17465 |
|---|---|---|---|
| Beryllium | 0.4–0.7 | 0.2–0.6 | 0.15–0.50 |
| Cobalt | 2.4–2.7 | 0.3 max | – |
| Nickel | – | 1.4–2.2 | 1.0–1.4 |
| Iron (max) | 0.10 | 0.10 | 0.20 |
| Aluminum (max) | 0.20 | 0.20 | 0.20 |
| Silicon (max) | 0.20 | 0.20 | 0.20 |
| Tin (max) | – | – | 0.25 |
| Zirconium (max) | – | – | 0.50 |
| Lead | – | – | 0.20–0.6 |
| Copper | Remainder | Remainder | Remainder |
Mechanical Properties UNS No. C17500 and UNS No. C17510
| Temper Designation | Tensile Strength (ksi [MPa]) | Rockwell Hardness (B Scale) | Electrical Conductivity (%IACS min) |
| TB00 (Solution heat-treated) | 35–55 [240–380] | 50 max | 20 |
| TD04 (Solution heat-treated and cold-worked: hard) | 65–80 [450–550] | 60–80 | 20 |
| TF00 (Precipitation hardened) | 100–130 [690–895] | 92–100 | 45 |
| TH04 (Hard and precipitation heat-treated) | 110–140 [760–965] | 95–102 | 48 |
UNS No. C17465
| Temper Designation | Tensile Strength (ksi [MPa]) | Rockwell Hardness (B Scale) | Electrical Conductivity (%IACS min) |
| TH04 (Hard and precipitation heat-treated) | 125–145 [860–1000] | 95 min | 44 |
Technical Specifications
| Specification | Value |
| Standard | ASTM B441 Copper Nickel Beryllium Alloy Bar |
| Grade | UNS No. C17500, C17510, C17540, and C17465 |
| Temper | TB00 (solution heat treated (A)), TF00 (precipitation hardened (AT)), TD04 (solution heat treated and cold worked: hard (H)), and TH04 (Hard and precipitation heat treated (HT)) |
| Type of Bars | Hot Rolled, Cold Finished |
| Shape of Bars | Round, Hexagonal and Octagonal, Square and Rectangular |
| Density | 8.9g/cm³ |
| Diameter | Round: Dia. 2.4 – 50mm; Hexagonal & Octagonal: 3 – 50mm; Square: 5-38mm; Rectangular: T: 5-38mm x W: 5-65mm |
| Length | 1000 – 6000mm |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical Analysis, Tensile Test, UT/ET |
Packing
Small diameter packed in plywood box; large diameter packed on plywood pallets.
Application
Fasteners and Connectors: Due to their high strength and resistance to stress relaxation, these alloys are used in aerospace fasteners and electrical connectors that must withstand high stresses and temperatures without deforming or losing conductivity.
Actuators and Sensors: These materials’ reliable electrical and mechanical properties make them suitable for critical components like actuators and sensors in aerospace systems.
Electrical Systems: Copper-nickel-beryllium and copper-cobalt-beryllium alloys are used in automotive electrical systems for connectors, relays, and switches due to their excellent conductivity and resistance to corrosion.
Safety Systems: These materials’ high strength and reliability benefit components in safety systems, such as airbag sensors and seatbelt pre-tensioner mechanisms.
Connectors and Switches: The alloys’ high electrical conductivity and good strength are essential for manufacturing connectors, switches, and other electrical components in electronic devices and telecommunications equipment.
Heat Sinks: Their ability to efficiently conduct heat makes them suitable for use as heat sinks in electronic devices. They help dissipate heat and maintain the device’s performance.
Mold Making and Tooling: These materials’ high hardness and strength make them ideal for molds and tooling used in high-pressure environments, such as injection molding or die casting.
Bearings and Bushings: In industrial machinery, these alloys’ wear resistance and mechanical properties are beneficial for components like bearings and bushings that require durability and reliability under friction and stress.
Precision Instruments: Instruments that require materials with stable electrical and mechanical properties under varying environmental conditions, such as scientific measuring devices, utilize these alloys to ensure accuracy and longevity.
Marine Applications: These materials’ corrosion resistance, especially in saltwater environments, makes them suitable for marine hardware and components.
