C17510 Beryllium Copper
Sheet: ASTM B 534-07, B 888 JIS H 3130
Rod: ASTM B 441-04, ASTM B 534-07
Tube: ASTM B 937, ASTM B 944
Profile: ASTM B 870-08
Forgings: ASTM B 870-08, ASTM B 938
C17510 Beryllium Copper (BeCu, UNS C17510) is considered the highest-performing advanced elastic material among copper alloys. Its chemical composition is 0.38–0.40% beryllium (Be), 2.4–2.8% nickel (Ni), the balance copper (Cu), and trace amounts of aluminum, cobalt, and other elements. After solution and aging heat treatment, C17510 exhibits mechanical properties such as high strength, high elasticity, high hardness, high fatigue strength, and low elastic hysteresis, as well as excellent physical and chemical properties such as corrosion resistance, wear resistance, cold resistance, high electrical and thermal conductivity, non-magnetic properties, and non-sparking under impact. It is widely used in explosion-proof tools, precision molds, bearings, and electrodes.
Chemical Composition
|
Element |
Content |
Role |
|
Copper (Cu) |
97.0 - 98.5 % |
Base Element, Conductivity |
|
Beryllium (Be) |
0.20 - 0.6 % |
Primary Strengthener |
|
Cobalt (Co) |
0.8 - 1.2 % |
Forms Strengthening Precipitates |
|
Other Elements |
≤ 0.5 % (total) |
- |
Mechanical Properties
|
Temper |
Condition |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness (Rockwell) |
|
TB00 |
Annealed (Soft) |
480 - 550 |
250 - 330 |
35 - 45 |
B60 - B75 |
|
TD04 |
Hard |
790 - 930 |
690 - 830 |
5 - 10 |
C24 - C30 |
|
TF00 |
Aged (After Hard) |
1100 - 1300 |
1000 - 1200 |
3 - 8 |
C38 - C42 |
Properties can be tailored to specific requirements. Contact our engineers for details.
Heat Treatment Process
Solution Treatment
860–880°C for 1–2 hours, followed by air quenching to ensure a uniform matrix without precipitation.
Aging
300–330°C for 2–4 hours to induce precipitation-reinforced phases, achieving maximum strength and hardness.
Cold and Hot Working
Combining high ductility and plasticity, it supports stamping, deep drawing, and precision forming.
Machining
Utilizing carbide tools and high-pressure coolant, it achieves high-precision and high-efficiency cutting.
Surface Treatment
Polishing, electroplating, or electroless plating can further enhance corrosion resistance and decorative effects.
Application Fields
C17510 Beryllium Copper is the material of choice for high-reliability components across industries:
Electronics & Telecommunications: Electrical connectors, relay springs, IC socket contacts, battery contacts.
Automotive: Advanced ECU connectors, sensor components, under-hood spring clips.
Aerospace & Defense: Critical electrical contacts, guidance system components, non-sparking tools.
Industrial Manufacturing: Resistance welding electrodes, tips, and holders; high-stress bushings and bearings.
Energy & Oil & Gas: Downhole tool components, non-sparking safety tools for explosive atmospheres.
Frequently Asked Questions (FAQ)
Q: How does C17510 differ from the more common C17200 alloy?
A: The key difference is the lower beryllium and the addition of cobalt. C17510 offers much higher electrical conductivity (45-60% IACS vs. ~22% for C17200) while C17200 offers higher ultimate strength and hardness. Choose C17510 Beryllium Copper when conductivity is a primary concern.
Q: What are the safety precautions for machining C17510?
A: Inhalation of beryllium-containing dust or fumes is hazardous. Machining operations require appropriate engineering controls (e.g., wet machining, local exhaust ventilation) and personal protective equipment (PPE). Please consult our supplied SDS for detailed instructions.
Q: Can you supply parts that are ready-to-use (fully heat-treated)?
A: Absolutely. We can supply material in the solution-annealed condition for your forming operations, or we can provide it in the fully hardened and aged temper, ready for final assembly.
Q: What is your typical lead time?
A: For standard sizes and tempers, we often have material in stock for quick shipment. For custom orders, lead times are typically 2-4 weeks. Contact us for a precise quote.
C17510 vs. C17200: A Concise Technical Comparison
Core Differences at a Glance
| Comparison Item | C17200 (High Strength) | C17510 (High Conductivity) |
|---|---|---|
| Beryllium Content | 1.8 - 2.0% (High Beryllium) | 0.2 - 0.6% (Low Beryllium) |
| Tensile Strength | Up to 1380 MPa (Extremely High) | 700 - 950 MPa (Moderate) |
| Electrical Conductivity | 15 - 28% IACS (Moderate) | 45 - 65% IACS (Excellent) |
| Thermal Conductivity | 90 - 130 W/m·K | 208 - 300 W/m·K (Superior) |
| Typical Applications | High-performance springs, non-sparking tools, and injection molds | Resistance welding electrodes, conductive springs, and electrical connectors |
Selection Guide in One Sentence
Choose C17200 when you require maximum strength, hardness, and wear resistance, and can accept moderate conductivity and slightly higher cost.
Choose C17510 when your application demands both good strength and excellent electrical/thermal conductivity (such as for welding or current-carrying components), while also preferring a more cost-effective solution.
Request a Free Quote for Beryllium Copper suppliers Today!
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