ASTM B534 CuCoBe CuNiBe Alloy Plate and Sheet
Grade: UNS Nos. C17500 and C17510
Type: Plate and Sheet
ASTM B534 CuCoBe & CuNiBe Alloy Plate & Sheet, Strip, and Rolled Bar
ASTM B534 CuCoBe and CuNiBe Alloy Plate and Sheet is a premium copper alloy product designed for applications that require a strong balance of strength, conductivity, fatigue resistance, and wear performance. Manufactured in accordance with ASTM B534, this plate and sheet material is widely used in aerospace, electronics, precision tooling, molds, springs, resistance welding components, and other high-performance industrial applications. CuCoBe and CuNiBe alloys are valued for their excellent mechanical properties, stable dimensional performance, and reliable service in demanding working conditions. At Golden Sunbird Metals, we supply ASTM B534 CuCoBe and CuNiBe alloy plate and sheet in a variety of thicknesses, dimensions, and specifications to meet different project and engineering requirements. With a focus on quality control, accurate processing, and responsive support, we provide dependable copper alloy plate and sheet solutions for customers seeking both performance and consistency.
Chemical Composition (wt.%) of ASTM B534 CuCoBe CuNiBe Alloy Plate and Sheet
| Copper Alloy UNS No. | Beryllium | Cobalt | Silicon (max) | Nickel | Iron (max) | Aluminum (max) | Copper (Balance) |
| C17500 | 0.4–0.7 | 2.4–2.7 | 0.2 | – | 0.1 | 0.2 | Balance |
| C17510 | 0.2–0.6 | 0.3 max | 0.2 | 1.4–2.2 | 0.1 | 0.2 | Balance |
Mechanical Properties (Solution-Heat-Treated or Solution-Heat-Treated and Cold-Worked Condition) of ASTM B534 CuCoBe CuNiBe Alloy Plate and Sheet
| Temper Designation | Tensile Strength (ksi) | Elongation in 2 in. (%) | Rockwell Hardness (B / 30T) |
| TB00 (C17500, C17510) | 35–55 | 20–35 | 45 max |
| TD02 (C17500, C17510) | 60–75 | 5–10 | 65–77 / 60–68 |
| TD04 (C17500, C17510) | 70–85 | 2–8 | 78–88 / 69–75 |
Mechanical Properties (After Precipitation Heat Treatment) of ASTM B534 CuCoBe CuNiBe Alloy Plate and Sheet
| Temper Designation | Tensile Strength (ksi) | Yield Strength (0.2% Offset) (ksi) | Elongation in 2 in. (%) | Rockwell Hardness (B / 30T) |
| TF00 | 100–130 | 80 | 10 | 92–100 / 77–82 |
| TH02 | 110–140 | 95 | 8 | 95–102 / 79–83 |
| TH04 | 110–140 | 95 | 8 | 95–102 / 79–83 |
Mechanical Properties (Mill-Hardened Condition) of ASTM B534 CuCoBe CuNiBe Alloy Plate and Sheet
| Temper Designation | Tensile Strength (ksi) | Yield Strength (0.2% Offset) (ksi) | Elongation in 2 in. (%) |
| TM02 | 95–120 | 85–110 | 10 |
| TM04 | 110–135 | 100–125 | 6 |
Electrical Conductivity
| Temper | IACS min (%) |
| TF00 | 45 |
| TH02 | 48 |
| TH04 | 48 |
| TM02 | 50 |
| TM04 | 50 |
Features
- ASTM B534-compliant copper-cobalt-beryllium and copper-nickel-beryllium alloy plate and sheet.
- Available in UNS C17500 and C17510.
- High strength and hardness after solution heat treatment and precipitation hardening.
- Good electrical conductivity with strong resistance to stress relaxation at elevated temperatures.
- Suitable for precision components where durability, conductivity, and dimensional stability are required.
Technical Specifications
| Specification | Value |
| Standard | ASTM B534 CuCoBe & CuNiBe Alloy Plate & Sheet |
| Grade | UNS Nos. C17500 and C17510 |
| Type | Plate, Sheet, Strip |
| Thickness | 1-50mm |
| Length | 1000 – 12000mm |
| Width | 50 – 2500mm |
| 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 |
Applications
- Electrical connectors, terminals, and contact springs.
- Switch parts, relay contacts, and switchgear components.
- Resistance welding electrodes and other high-load electrical contact parts.
- Aerospace and automotive electrical components requiring strength plus conductivity.
- Precision instrument parts and other components operating under repeated load or thermal stress.
