Beryllium Copper UNS C17200 Strips / Coils
Beryllium Copper C17200 Strips and Coils Supplier | UNS C17200 Alloy 25
Beryllium Copper UNS C17200 Strips and Coils (also called Alloy 25 or CDA 172) is the gold standard of high performance copper alloys. The key value proposition of C17200 strip is that it presents a balance of spring strength and electrical conductivity that cannot be achieved by any single standard copper alloy and steel. BeCu C17200 strip features tensile strength of up to 1480 MPa and electrical conductivity of about 22% IACS in the completely hardened TH04 temper, enabling engineers to not compromise one axis of performance at the expense of the other.
These materials are used in the electronics, automotive, telecommunications and aerospace industries as the first choice of spring contacts, relay blades, switch contacts, connector shells, bellows, and diaphragms with thicknesses between 0.05 mm and 6.35 mm and widths up to 600 mm. Aashish Metal and Alloys is a PED approved production company, stockist and exporter of Beryllium Copper C17200 Strips and Coils, which serves more than 52 nations across the globe with full material traceability and third party certification.
Explore our complete range by visiting View all Beryllium Copper Products, or browse our Beryllium Copper Strip and Coil Hub for grade comparisons and related product information
- Beryllium Copper C17200 Strips / Coils Specifications
- Beryllium Copper C17200 Strips / Coils Equivalent Grades
- Beryllium Copper C17200 Strips / Coils Quality and Test reports
- Related Types Of Beryllium Copper C17200 Strips / Coils
- Size Chart Of Beryllium Copper C17200 Strips / Coils
- Chemical Composition
- Mechanical Properties
- For Beryllium Copper C17200 Strips / Coils price list
- We supply of variety Beryllium Copper C17200 Strips / Coils
- Application Of Beryllium Copper C17200 Strips / Coils
Beryllium Copper C17200 Strips and Coils Specifications
| Parameter | Details |
|---|---|
| Standard | ASTM B197, ASME SB194, AMS 4532, SAE J463, SAE J461 |
| Coil Width | 3 mm and above |
| Strip Coils Width | 250 mm to 750 mm (Mill Edge) | 5.0 mm to 750 mm (Slit Edge) |
| Thickness | 0.05 mm to 6.35 mm (Foil from 0.01 mm available on request) |
| Length | 500 mm to 12000 mm |
| Width | 100 mm to 3000 mm |
| Temper | AT (Annealed), TD01 (1/4 Hard), TD02 (1/2 Hard), TD04 (Hard), TH02, TH04 (Spring Hard) |
| Hardness | Soft, Quarter Hard, Half Hard, Hard, Extra Hard, Spring Hard |
| Surface Finish | Cold Rolled, Polished, Hot Rolled (HR), Cold Rolled (CR) |
Beryllium Copper C17200 Strips / Coils Equivalent Grades
| Standard | UNS | Werkstoff Nr. |
|---|---|---|
| Alloy 25 (C17200) | C17200 | 2.1247 |
Beryllium Copper C17200 Strips / Coils Quality and Test reports
Every batch of Beryllium Copper C17200 Strips and Coils from Aashish Metal and Alloys is supported by full documentation and third party inspection where required.
| Test / Certificate | Details |
|---|---|
| Third Party Inspection | Available on request |
| Mill Test Certificate | EN 10204 / 3.1B |
| Radiography Test | 100% Radiography Test |
| Raw Materials Certificate | Included with every shipment |
| Hardness Test | Rockwell and Vickers |
| Tensile Test | As per ASTM B197 |
Available Forms of Beryllium Copper C17200
C17200 beryllium copper is available in the following flat product forms, each optimised for specific manufacturing and assembly processes:
- Beryllium Copper Strip: Slit to precise widths for stamping, forming, and roll forming operations in connector and spring manufacturing.
- Beryllium Copper Coil: Wound for continuous feed in progressive die stamping. Available in mill edge and slit edge configurations.
- Beryllium Copper Foil: Thicknesses from 0.01 mm available for EMI shielding, gaskets, and precision shim applications.
- Beryllium Copper Shim Stock: BeCu shim strip used for precision alignment, tooling spacers, and high fatigue environments where steel shims would corrode
Size Chart of Beryllium Copper C17200 Strips and Coils
| Size (mm) | Size (inch) | Temper | Weight (kg/m) | Notes |
|---|---|---|---|---|
| 0.08 x 114.3 | 0.003 x 4 1/2 | 1/2 Hard | 0.07 | |
| 0.13 x 114.3 | 0.005 x 4 1/2 | 1/2 Hard | 0.12 | |
| 0.15 x 28.6 | 0.006 x 1 1/8 | 1/2 Hard | 0.04 | |
| 0.15 x 114.3 | 0.006 x 4 1/2 | 1/2 Hard | 0.14 | |
| 0.15 x 152.4 | 0.006 x 6 | 1/2 Hard | 0.15 | |
| 0.20 x 114.3 | 0.008 x 4 1/2 | 1/2 Hard | 0.20 | |
| 0.20 x 25.4 | 0.008 x 1 | 1/2 Hard | 0.04 | |
| 0.25 x 114.3 | 0.010 x 4 1/2 | 1/2 Hard | 0.24 | |
| 0.3 x 25.4 | 0.012 x 1 | 1/2 Hard | 0.06 | |
| 0.3 x 114.3 | 0.012 x 4 1/2 | 1/2 Hard | 0.28 | |
| 0.3 x 200 | 0.012 x 7.874 | 1/2 Hard | 0.50 | |
| 0.38 x 20 | 0.0148 x 0.787 | 1/2 Hard | 0.06 | |
| 0.38 x 114.3 | 0.0148 x 4 1/2 | 1/2 Hard | 0.34 | |
| 0.46 x 114.3 | 0.018 x 4 1/2 | 1/2 Hard | 0.43 | |
| 0.5 x 38 | 0.020 x 1 1/2 | 1/2 Hard | 0.19 | |
| 0.55 x 25.4 | 0.022 x 1 | 1/2 Hard | 0.12 | |
| 0.55 x 114.3 | 0.022 x 1.772 | 1/2 Hard | 0.55 | |
| 0.71 x 114.3 | 0.028 x 4 1/2 | 1/2 Hard | 0.67 | |
| 0.71 x 45 | 0.028 x 1.772 | 1/2 Hard | 0.12 | |
| 0.813 x 82.55 | 0.032 x 3 1/4 | 1/2 Hard | 0.59 | |
| 1.02 x 79.4 | 0.040 x 3 1/8 | 1/2 Hard | 0.66 | |
| 1.27 x 114.3 | 0.050 x 4 1/2 | 1/2 Hard | 1.21 |
Temper Conditions and Spring Properties
The temper condition of C17200 BeCu strip determines the balance between formability and final mechanical performance. Engineers specify temper based on the forming operations required before age hardening and the spring load and fatigue life requirements in service. The following table summarises the key temper conditions available from Aashish Metal and Alloys:
| Temper | Condition | Tensile (MPa) | Yield (MPa) | Conductivity | Typical Use |
|---|---|---|---|---|---|
| AT (TB00) | Annealed / Soft | 550 to 770 | 170 to 380 | 22 IACS min | Best formability |
| TD01 (1/4 H) | Quarter Hard | 620 to 830 | 380 to 590 | 22 IACS min | Good bend radius |
| TD02 (1/2 H) | Half Hard | 690 to 900 | 515 to 760 | 22 IACS min | Balance of form and strength |
| TD04 (H) | Hard | 825 to 965 | 690 to 895 | 22 IACS min | High strength strip |
| TH02 | Hardened | 1105 to 1310 | 930 to 1170 | 22 IACS min | Spring contacts, bellows |
| TH04 | Spring Hard (Peak) | 1280 to 1480 | 965 to 1205 | 22 IACS min | Relay blades, precision springs |
For spring contacts and relay blades where maximum hardness and fatigue resistance are required, the TH04 temper delivers the highest tensile and yield strength after age hardening at approximately 315 deg C. For components that require complex forming before hardening, AT (annealed) temper strip is the correct starting point.
Chemical Composition of Beryllium Copper C17200
| Grade | Cu (%) | Be (%) | Co (%) |
|---|---|---|---|
| Beryllium Copper C17200 | Remainder (min 97.9) | 1.80 to 2.00 | 0.20 max |
The beryllium content is tightly controlled within the 1.80 to 2.00% range. This precise concentration enables the age hardening response that gives C17200 its spring strength. Carbon content control is also critical when service temperatures approach 600 deg C, as graphitisation at elevated temperatures can compromise mechanical properties. C17200 is generally rated for service up to 600 deg F (315 deg C) in continuous operation.
Mechanical Properties of Beryllium Copper C17200
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|---|
| Beryllium Copper C17200 | 8.25 g/cm3 | 866 deg C (1590 deg F) | 186,000 to 215,000 psi | 1280 to 1480 MPa | 140,000 to 174,800 psi | 965 to 1205 MPa | 15.0 to 30.0 % |
Electrical and Thermal Properties
The electrical and thermal performance of C17200 BeCu strip makes it indispensable in connector and relay applications where both current carrying capacity and mechanical spring function are required from a single component:
- Electrical Conductivity: Approximately 22% IACS in the TH04 (fully hardened) temper condition.
- Thermal Conductivity: Approximately 105 W/m K, significantly higher than most engineering alloys used for springs.
- Magnetostrictive Properties: Non magnetic, making C17200 strip safe for use in MRI environments, precision instruments, and magnetic sensor housings.
- Non Sparking: Safe for explosive and hazardous environments including oil refineries, chemical plants, and mining operations.
- Melting Range: Approximately 866 deg C to 982 deg C (1590 deg F to 1800 deg F).
- Service Temperature: Rated up to 600 deg F (315 deg C) for continuous operation.
- Corrosion Resistance: Good resistance to natural and distilled water, caustic soda, alkaline and neutral salt solutions, and dry fluorine. Moderate resistance to sulfuric and hydrochloric acids at low concentrations.
C17200 vs C17300 vs C17500 Beryllium Copper Strips Comparison
Specifying the correct beryllium copper strip grade requires matching the conductivity and strength requirements of the application. C17200 is the premium high strength grade, while C17300 and C17500 offer higher conductivity at lower strength levels. The table below assists in grade selection:
| Property | C17200 (Alloy 25) | C17300 (Alloy 165) | C17500 (Alloy 10) |
|---|---|---|---|
| Be Content | 1.8 to 2.0% | 0.2 to 0.6% | 0.2 to 0.6% |
| Co / Ni | 0.20% Co | 0.35 to 0.6% Co | 1.4 to 2.2% Ni |
| Tensile (Peak) | 1280 to 1480 MPa | 620 to 825 MPa | 515 to 690 MPa |
| Conductivity | 22% IACS | 45 to 60% IACS | 45 to 60% IACS |
| Key Advantage | Highest strength, best spring fatigue life | Higher conductivity, lower strength | Best conductivity, lowest strength in BeCu family |
| Typical Use | Spring contacts, relay blades, precision springs | Spot welding electrodes, bushings | High conductivity electrical contacts |
For applications where spring fatigue life and maximum strength are the primary requirements, such as relay blades, switch contacts, and precision springs, C17200 is the correct choice. For applications prioritising electrical conductivity over spring strength, C17500 may be considered. Consult our team for grade selection support.
Also available from Aashish Metal and Alloys: Beryllium Copper C17200 Round Bar and Beryllium Copper C17200 Plate.
Applications of Beryllium Copper C17200 Strips and Coils by Industry
The spring strength and electrical conductivity combination of C17200 BeCu strip makes it the preferred material for critical components across the following industries:
- Electrical Connectors and Terminals: Spring contacts, connector shells, and crimp terminals in consumer electronics, industrial connectors, and high reliability military connectors where cyclic fatigue life is critical.
- Relay Blades and Switch Contacts: Relay blades, reed switch contacts, and micro switch springs that require consistent spring force over millions of actuations.
- Automotive Sensors and Connectors: High reliability BeCu strip used in engine management sensors, ABS connectors, and battery management system contacts where elevated temperature and vibration resistance are required.
- Telecommunications Equipment: SIM card contacts, RF connector springs, and antenna switch contacts requiring stable electrical performance over the product lifetime.
- Aerospace and Defence: Bellows, diaphragms, and spring elements in avionics and guidance systems where non magnetic and non sparking properties add safety value.
- Medical Devices: MRI compatible surgical instruments, probe contacts, and diagnostic equipment springs where non magnetic properties are mandatory.
- Precision Springs and Diaphragms: Pressure sensing diaphragms, Bourdon tube springs, and flexible bellows for instrumentation requiring consistent elastic modulus over time.
- Heat Exchangers and Industrial Equipment: Thin foil and shim stock used in thermal management assemblies and precision machinery alignment.
- Food Processing and Architectural Trim: Corrosion resistant BeCu strip and foil used in food contact equipment and decorative trim applications requiring durability.
For a comprehensive overview of beryllium copper uses and properties, visit our Beryllium Copper Uses and Properties resource page.
Beryllium Copper C17200 Strip and Coil Product Varieties We Supply
| Beryllium Copper C17200 Strips | Beryllium Copper C17200 Coils |
|---|---|
| Copper Beryllium C17200 Strips | C17200 Beryllium Copper Coil |
| Beryllium Copper C17200 Strips Price List | Beryllium Copper C17200 HR Coils |
| Alloy 25 Strip Coil | Beryllium Copper CDA 172 CR Coils |
| CuBe2 C17200 Strip Coils | CDA 172 Beryllium Copper Hot Rolled Strip |
| C17200 Beryllium Copper Polish Strip | Beryllium Copper C17200 Coils Exporter |
| C17200 Beryllium Copper Cold Rolled Coil | Beryllium Copper C17200 CR Strips |
| Beryllium Copper 2.1247 Strips | ASTM B194 C17200 Beryllium Copper Coils |
| WERKSTOFF NR. 2.1247 Coils | Beryllium Copper C17200 Hot Rolled Coils |
| Beryllium Copper C17200 Cold Rolled Strips | CuNi2Be Trim Strips Stock |
| Alloy 25 Strips | UNS C17200 Strips |
| Beryllium Copper CDA 172 Coils | ASTM B194 Beryllium Copper C17200 HR Strip |
| C17200 Beryllium Copper Cold Drawn Strips | CuBe2 C17200 Strip Manufacturers in India |
| CDA 172 Strips Price List In India | C17200 Beryllium Copper Coils |
Safety Note: Beryllium Dust Inhalation Hazard
Beryllium copper is not hazardous when used in solid form as a strip, coil or plate. Nevertheless, beryllium copper machining, grinding, cutting, or polishing produces small amounts of beryllium dust and particles that are considered to be a respiratory hazard. Breathing of beryllium dust may lead to Chronic Beryllium Disease (CBD), a permanent lung disease. These precautions should be followed in any machining operation:
- High speed steel or carbide tooling (M1, M2, T1, or T2 grades suggested) with sufficient cutting fluid should be used to reduce the amount of dust produced.
- The machining of BeCu should be performed either with local exhaust ventilation (LEV) or covered wet grinding systems.
- NIOSH approved respirators with a fine particulates rating (minimum P100) are required of the operators.
- Work clothes and protective gloves need to be used. During the machining, dirty clothing should not be put on.
- Air monitoring of the workplace must be carried out to maintain the level of beryllium at a level of 0.1 microgrammes per cubic metre which is the OSHA Action Level.
Beryllium copper in machined or finished form of a spring, a contact or connector is not harmful to the end users. The risk is particular to the machining and finishing.
Beryllium Copper C17200 Strips and Coils Price List
Request the latest Beryllium Copper C17200 Strips and Coils price list by clicking the Request a Quote button or contacting us directly. Aashish Metal and Alloys maintains stock of all standard items and can export them at the best price for Beryllium Copper CDA 172 Strips and Coils.
Contact Us: +91 22 66362223 | +91 22 66394926 | export@aashishmetal.com
We maintain bulk stock in our stockyard. Contact us for a free sample and full stock list.
Frequently Asked Questions About Beryllium Copper C17200 Strips and Coils
Strips are a straight cut, flat piece of BeCu that is available in cut lengths, whereas coils are strips that are rolled up to create rolling material that is easily transported and continuous feed in progressive die stamping and forming processes. They are both offered with the same grades, thickness and temper conditions.
ASTM B197 and AMS 4532 are the major standards of BeCu C17200 strip and coil. Other relevant standards are ASME SB194, SAE J463 and SAE J461. All the materials provided by Aashish Metal and Alloys are certified to these standards with complete mill test certificates.
TH04 temper (also known as Spring Hard or Extra Hard) is the appropriate specification of spring contacts, relay blades and switch contacts where maximum fatigue life and spring force are needed. When the component needs to undergo a complex forming then AT (annealed) temper strip is ordered and age hardened after forming.
Normal foil thickness begins at 0.05 mm. Thinner foil, 0.01 mm, can be ordered on request as shim stock of BeCu and in high-end EMI shielding applications. Call our sales department to check on the availability of the thickness and width that you need.
A competent supplier of BeCu strips must provide complete material traceability, EN 10204 3.1B mill test certificates, meet ASTM B197 or AMS 4532 requirements, offer tempering parameters and be able to provide individual slit widths and thicknesses. Aashish Metal and Alloys offers all these, supported by a 20 years experience and a network of exports into 52 countries worldwide.
The most common applications are spring contacts, relay blades, switch contacts, electrical connector shells, bellows, diaphragms, precision springs, BeCu shim stock, EDM electrodes, and telecommunications equipment springs. C17200 BeCu strip is also non magnetic and non sparking, making it a good product to use in hazardous and magnetically sensitive areas.
Related Beryllium Copper C17200 Products
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We export Precut Shims to customers in the Middle East (Saudi Arabia, UAE, Qatar, Bahrain, Oman, Kuwait, Iran, Iraq, Turkey, Yemen, Syria, Jordan, Cyprus), Africa (Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, Republic of Congo, Gabon), North America (USA, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad and Tobago, Jamaica, Bahamas, Denmark), Europe (Russia, Norway, Germany, France, Italy, UK, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta), Asia (India, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia) and South America (Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay).
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