Beryllium Copper| C17200 / C17500
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Beryllium Copper C17200 / C17500 Brochure
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Descriptions
At Navkar Metal Syndicate, we bring you Beryllium Copper (BeCu) — the premium copper alloy that pushes the boundaries of performance. Blended with up to ~2% Beryllium and trace additions of Nickel or Cobalt, this exceptional alloy transforms copper’s natural conductivity and corrosion resistance into a high-strength, precision-engineered material ideal for critical applications.
Whether it’s aerospace connectors, high-cycle springs, non-sparking safety tools, or mould components demanding both hardness and heat transfer, our Beryllium Copper products deliver unmatched durability, efficiency, and reliability.
Our BeCu stocks are heat-treated, age-hardened, and precision-machined to tight tolerances — offering tool-steel-level hardness, excellent electrical & thermal conductivity, and outstanding fatigue and wear resistance. Non-magnetic and non-sparking by nature, Beryllium Copper ensures safe operation and consistent performance in demanding marine, defense, electrical, and industrial environments.
Every batch from Navkar Metal Syndicate is supplied with full Mill Test Certificates (MTCs), traceable heat numbers, and export-grade packaging. With a reputation built on precision, reliability, and integrity, we supply Beryllium Copper you can trust for your most demanding projects.
Chemical Composition
Beryllium Copper Alloys are defined by their precise control of Beryllium, Nickel, and Cobalt content — which determines strength, conductivity, and hardenability. The three main grades supplied by Navkar Metal Syndicate include C17200, C17500, and C17510, each offering unique performance balance for spring, tooling, and electrical applications.
| Element | C17200 (Alloy 25) |
C17500 (Alloy 10) |
C17510 (Alloy 3) |
|---|---|---|---|
| Copper (Cu) | Balance | Balance | Balance |
| Beryllium (Be) | 1.80 – 2.00% | 0.40 – 0.70% | 0.40 – 0.70% |
| Nickel (Ni) | ≤ 0.60% | 1.40 – 2.20% | 0.20 – 0.60% |
| Cobalt (Co) | ≤ 0.60% | 1.40 – 2.20% | 2.40 – 2.70% |
| Iron (Fe) | ≤ 0.20% | ≤ 0.15% | ≤ 0.15% |
| Lead (Pb) | ≤ 0.02% | ≤ 0.02% | ≤ 0.02% |
| Other Elements | ≤ 0.10% | ≤ 0.10% | ≤ 0.10% |
*Nominal compositions may vary slightly based on manufacturing source or temper condition. All alloys comply with applicable ASTM Beryllium Copper specifications including ASTM B194, B196, B197, and B441.
Mechanical, Physical & Fabrication Properties
Beryllium Copper alloys combine the high strength of heat-treatable materials with the superior electrical and thermal conductivity of copper. The table below summarizes the key mechanical, physical, and fabrication characteristics of C17200 (Alloy 25), C17500 (Alloy 10), and C17510 (Alloy 3).
| Property | C17200 (Alloy 25) |
C17500 (Alloy 10) |
C17510 (Alloy 3) |
|---|---|---|---|
| Tensile Strength (UTS) | 1100 – 1380 MPa (160 – 200 ksi) |
690 – 965 MPa (100 – 140 ksi) |
830 – 1030 MPa (120 – 150 ksi) |
| Yield Strength (0.2%) | 758 – 1170 MPa | 480 – 830 MPa | 620 – 895 MPa |
| Elongation (%) | 1 – 10 % | 5 – 25 % | 5 – 20 % |
| Hardness (HV) | 300 – 400 HV | 220 – 300 HV | 250 – 340 HV |
| Modulus of Elasticity | 128 GPa | 125 GPa | 125 GPa |
| Electrical Conductivity (% IACS) | 22 – 25 % | 45 – 60 % | 38 – 45 % |
| Thermal Conductivity (W/m·K) | 105 – 130 | 200 – 260 | 170 – 210 |
| Density (g/cm³) | 8.25 | 8.80 | 8.80 |
| Melting Range (°C) | 870 – 980 °C | 980 – 1000 °C | 980 – 1000 °C |
| Machinability | 30 – 40 % of free-cutting brass | Good | Good |
| Formability | Moderate (cold work before aging) | Good | Good |
| Weldability / Brazing | Excellent (resistance / inert gas) | Excellent | Excellent |
| Heat Treatment | Solution Anneal + Age Harden | Age Hardenable | Age Hardenable |
*Properties vary with temper (AT, HT, TH04, TH02, etc.) and manufacturing condition. All data comply with ASTM B194, B196, B197, and related specifications.
Applications
Beryllium Copper alloys are widely used in high-performance, safety-critical, and precision applications where strength, conductivity, and corrosion resistance must coexist. Navkar Metal Syndicate supplies BeCu products engineered for these demanding environments:
- Aerospace connectors, fasteners & landing gear components
- High-performance springs, diaphragms & precision bellows
- Electrical connectors, switches, relays & contact terminals
- Injection mould tooling, precision dies & wear-resistant inserts
- Oil & gas drilling tools and non-sparking safety equipment
- Marine hardware, shipboard fittings & undersea communication systems
- Defense and naval applications requiring non-magnetic and corrosion-resistant materials
Beryllium Copper’s unique combination of strength, electrical conductivity, and fatigue resistance makes it the material of choice for critical components across aerospace, marine, defense, and precision engineering industries.
Standards & International Equivalents:
Beryllium Copper alloys are standardized across multiple international specifications for mechanical, electrical, and heat-treated performance. Navkar Metal Syndicate supplies all BeCu grades conforming to these recognized standards and equivalents.
| Standard / Specification | C17200 (Alloy 25) |
C17500 (Alloy 10) |
C17510 (Alloy 3) |
|---|---|---|---|
| UNS | C17200 | C17500 | C17510 |
| ASTM / ASME | B194, B196, B197, B441 | B441, B534 | B441, B534 |
| BS (British) | BS 2874 CB101 / CB102 | BS 2874 CB103 | BS 2874 CB104 |
| EN / European | EN CW101C | EN CW110C | EN CW111C |
| ISO | CuBe2 | CuNi2Be | CuCo2Be |
| JIS (Japan) | JIS C1720 | JIS C1750 | JIS C1751 |
| DIN / WNR | DIN 2.1247 | DIN 2.1285 | DIN 2.1285 |
| Military / Aerospace | MIL-C-17200 / AMS 4533 | AMS 4534 | AMS 4535 |
*All Beryllium Copper materials are supplied as per international standards with complete traceability, test certification (EN 10204 3.1/3.2), and heat treatment condition documentation.
Common Names & International Identifiers
Beryllium Copper is also known by a variety of trade names and international identifiers, depending on the alloy composition and regional specification. These equivalents help ensure cross-reference compatibility for global sourcing and project approvals.
| Grade / Type | Common Names | UNS Designation | Trade / Commercial Names | Equivalent Identifiers |
|---|---|---|---|---|
| C17200 (Alloy 25) |
Beryllium Copper 25, CuBe2, BeCu-25 | C17200 | Brush Wellman Alloy 25, Materion Alloy 25 | EN CW101C / DIN 2.1247 / CuBe2 |
| C17500 (Alloy 10) |
Beryllium Copper 10, CuNi2Be | C17500 | Brush Alloy 10, Materion Alloy 10 | EN CW110C / DIN 2.1285 / CuNi2Be |
| C17510 (Alloy 3) |
Beryllium Copper 3, CuCo2Be | C17510 | Brush Alloy 3, Materion Alloy 3 | EN CW111C / DIN 2.1285 / CuCo2Be |
*Also known as BeCu or Copper-Beryllium Alloy, these grades are recognized worldwide for their high strength, electrical conductivity, non-magnetic nature, and corrosion resistance — making them ideal for aerospace, electrical, and tooling applications.
Common Product Forms & Dimensions
Navkar Metal Syndicate supplies precision-engineered Beryllium Copper (BeCu) in multiple forms to meet the needs of aerospace, electrical, and industrial applications. All materials are available in standard and custom dimensions with tight tolerances, export-grade packing, and complete Mill Test Certificates (MTCs) for traceability.
| Product Form | Specification | Dimensions / Range | Remarks |
|---|---|---|---|
| Strip / Coil | Cold Rolled, Annealed, or Tempered Condition |
Thickness: 0.05 – 2.0 mm Width: up to 200 mm |
Supplied in continuous coils for stamping and electronic applications |
| Cut-to-Length Sheet / Foil | Precision-cut & surface-finished |
Thickness: 0.05 – 1.0 mm Length: up to 1200 mm |
Ideal for connectors, shims, and high-conductivity parts |
| Rod / Bar | Extruded, Drawn, or Forged Condition | Diameter: 1 – 120 mm | Used in tooling, mould inserts, and precision machined components |
| Wire – Coil Form | Soft Annealed or Spring Temper | Diameter: 0.2 – 1.0 mm | For electrical connectors, springs, and high-reliability leads |
| Wire – Bobbin Form | Fine Drawn, High Conductivity Grade | Diameter: 0.05 – 0.15 mm | Used in precision electronics and micro-contact applications |
All Beryllium Copper products are available in C17200 (Alloy 25), C17500 (Alloy 10) and C17510 (Alloy 3) grades — supplied in heat-treated, age-hardened, or solution-annealed condition as per ASTM, EN, or JIS specifications.
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