Beryllium Copper C17200 – High-Strength Copper Alloy
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The most popular beryllium copper alloy which goes by the names C17200 and Alloy 25 demonstrates exceptional strength and hardness levels that match alloy steel properties. The peak aged condition of C17200 provides 200 ksi ultimate tensile strength and RC 45 Rockwell hardness with 22% IACS minimum electrical conductivity. C17200 functions as spring copper and beryllium bronze within the high-performance copper alloy family that unites strength with durability. The mechanical properties of commercial beryllium copper improve substantially when it contains between 0.4% to 2.0% beryllium content.
Beryllium copper alloys exist in two fundamental groups.
- C17200 and C17300: provide high strength alongside moderate electrical conductivity levels.
- C17500 and C17510: Provide higher conductivity with moderate strength.
The alloys demonstrate three main characteristics: superior thermal conductivity while maintaining resistance to stress relaxation alongside precise sensitivity to precipitation-hardening treatments therefore they fulfill demanding requirements throughout multiple business sectors.
Beryllium Copper Suppliers
Looking for materials to use in critical applications? Then beryllium copper products should be your choice due to their exceptional strength along with durable properties and resistance against corrosion. Beryllium copper alloy C17200 (Alloy 25) serves as the primary material selection for high-stress applications because it finds extensive use in automotive, aerospace, electronics and defense industries.
Kalpataru Piping Solutions functions as a leading beryllium copper supplier throughout India while providing top-tier C17200 alloy that fulfills international specifications. C17200 beryllium copper shows excellent performance which matches steel strength levels while offering all the advantages of copper material.
Key Benefits of Beryllium Copper Products:
- Superior tensile strength
- Excellent resistance to wear and fatigue
- Outstanding thermal and electrical conductivity
- Ideal for springs, connectors, tools, and aerospace components
Contact Kalpataru Piping Solutions for their reliable beryllium copper C17200 supply which provides customized industry solutions for high-quality products. Reach out to us today to receive the best beryllium copper pricing together with exceptional delivery services.
Beryllium Copper Specifications
| End Product | Specification |
| Bar | AMS 4650, 4651, 4533, ASTM B194, B196, MILITARY MIL-C-21657, SAE J463, J461 |
| Extrusions | ASTM B570 |
| Forgings | AMS 4650, ASTM B570 |
| Plate | ASTM B194 |
| Rod | AMS 4650, 4534, 4533, 4651, ASTM B196, MILITARY MIL-C-21657, SAE J463, J461 |
| Rod, Forging | AMS 4650 |
| Sheet | ASTM B194 |
| Strip | ASTM B194, SAE J463, J461 |
| Tube, Seamless | AMS 4535, ASTM B643 |
| Wire | AMS 4725, ASTM B197, SAE J463, J461 |
Beryllium copper composition
| AL | BE | CO | CU | SI | |
| Min/Max | 0.2 | 1.8 – 2.0 | 0.20 min | Rem | 0.2 |
| Nominals | – | 1.9000 | – | 98.1000 | – |
Beryllium copper properties
The high-performance copper alloy UNS C17200 serves multiple names including Beryllium Copper C17200 and Alloy 25. The extensive usage of this alloy occurs in aerospace applications along with defense systems and automotive industries and electronic devices because it exhibits dependable performance characteristics in tough environmental conditions
Physical Properties of C17200 Beryllium Copper
| Property | Metric | Imperial |
| Density | 8.25 g/cm³ | 0.298 lb/in³ |
| Melting Point | 866°C | 1590°F |
| Age Hardening Changes | Max 2% shrink in length, Max 6% increase in density |
Mechanical Properties of C17200 Alloy
| Property | Metric | Imperial |
| Rockwell Hardness (B Scale) | 80 – 85 | 80 – 85 |
| Ultimate Tensile Strength | 515 – 585 MPa | 74,700 – 84,800 psi |
| Yield Strength | 275 – 345 MPa | 39,900 – 50,000 psi |
| Elongation at Break | 15 – 30% | 15 – 30% |
| Modulus of Elasticity | 125 – 130 GPa | 18,100 – 18,900 ksi |
| Shear Modulus | 50.0 GPa | 7,250 ksi |
| Poisson’s Ratio | 0.3 | 0.3 |
| Machinability (vs C36000 Brass) | 20% | 20% |
Thermal Properties of Beryllium Copper C17200
| Property | Metric | Imperial |
| Thermal Conductivity (@20°C) | 105 – 130 W/m·K | 729 – 902 BTU·in/hr·ft²·°F |
| Thermal Conductivity (@200°C) | 130 – 133 W/m·K | 902 – 923 BTU·in/hr·ft²·°F |
| CTE @ 20–100°C | 16.7 μm/m·°C | 9.28 μin/in·°F |
| CTE @ 20–200°C | 17.0 μm/m·°C | 9.44 μin/in·°F |
| CTE @ 20–300°C | 17.8 μm/m·°C | 9.89 μin/in·°F |
| Specific Heat Capacity | 0.420 J/g·°C | 0.100 BTU/lb·°F |
| Solidus Temperature | 865°C | 1590°F |
| Liquidus Temperature | 980°C | 1800°F |
C17200 Beryllium Copper Temperature
| PRODUCT TYPE | TEMPER TYPE |
| Bar | AMS 4650, 4651, 4533, ASTM B194, B196, MILITARY MIL-C-21657, SAE J463, J461 |
| Extrusions | ASTM B570 |
| Forgings | AMS 4650, ASTM B570 |
| Plate | ASTM B194 |
| Rod | AMS 4650, 4534, 4533, 4651, ASTM B196, MILITARY MIL-C-21657, SAE J463, J461 |
| Rod, Forging | AMS 4650 |
| Sheet | ASTM B194 |
| Strip | ASTM B194, SAE J463, J461 |
| Tube, Seamless | AMS 4535, ASTM B643 |
| Wire | AMS 4725, ASTM B197, SAE J463, J461 |
Beryllium Copper Fabrication:
| JOINING TECHNIQUE | SUITABILITY |
| Brazing | Good |
| Butt Weld | Fair |
| Capacity for Being Cold Worked | Good |
| Capacity for Being Hot Formed | Excellent |
| Coated Metal Arc Welding | Good |
| Forgeability Rating | 40 |
| Gas Shielded Arc Welding | Good |
| Machinability rating | 20 |
| Oxyacetylene Welding | Not Recommended |
| Seam Weld | Fair |
| Soldering | Good |
| Spot Weld | Good |
C17200 beryllium copper heat treatment
- Machinability
The C17200 Beryllium Copper alloy demonstrates good workability & maintains superior strength characteristics and durability levels. The machinability rating of C17200 Beryllium Copper alloy stands at 20% below free-cutting brass (C36000) which indicates moderate difficulty in machining but allows proper tooling & techniques to succeed. - Welding
The C17200 Beryllium Copper alloy can be welded through soldering , brazing , gas-shielded arc welding , spot welding , seam welding , butt welding & coated metal arc welding. Oxyacetylene welding produces undesirable effects on the alloy properties so it should be avoided for this material. - Forging (Hot and Cold Working)
The forging process will takes place within a temperature range of 649°C to 816°C (1200°F to 1500°F). The alloy demonstrates superior hot working performance together with outstanding cold working characteristics to make it suitable for various forming operations. - Annealing
The annealing process of C17200 Beryllium Copper perform in between temperature ranges 774°C to 802°C (1425°F to 1475°F) to reduce stress & recover ductility after cold working operations. The alloy demonstrates excellent versatility in demanding industrial applications because of its specific characteristics.
Advantages of Beryllium Copper Alloy
Beryllium copper alloy offers several benefits like high strength , stiffness with excellent electrical & thermal conductivity, making it suitable for both structural & electrical components. The alloy is non-magnetic, corrosion-resistant, resists wear & galling, which enhances its durability in harsh environments.
Beryllium Copper Price – What to Know
The price of beryllium copper can vary based on several factors including:
- Grade & Composition — Different grades (like C17200, C17500) offer varying strength, conductivity and performance attributes.
- Form & Dimensions – Sheets, rods, wires, strips or custom-machined parts can affect pricing depending on size and finish.
- Order Volume – Bulk orders may be eligible for volume-based pricing or special rates.
- Market Trends & Metal Rates – Being a copper-based alloy global metal prices and beryllium availability can influence current rates.
Whether you are sourcing material for a one-off prototype or large-scale production we offer competitive pricing backed by quality assurance and technical support.
Frequently Asked Questions About Beryllium Copper
What is beryllium copper?
Beryllium copper possesses three distinct characteristics: outstanding strength properties together with superb electrical , thermal conductivity and superior corrosion durability. The material maintains its shape precisely and shows high resistance to stress.
Is beryllium copper harder than steel?
Yes, Beryllium copper in its heat-treated state surpasses the hardness of numerous alloy steels yet maintains its electrical conductivity & corrosion resistance properties.
How is beryllium copper alloy made?
Beryllium copper can be made through the melting process of copper with minimal amounts of beryllium or beryllium oxide. Manufacturers shape the beryllium copper mixture into ingots before creating final product forms.
What are the uses of beryllium copper?
Beryllium copper serves multiple industrial purposes as it enables electrical connectors and springs and load cells and tools to remain strong yet conductive and non-magnetic.
How to select the right beryllium copper alloy for your application?
The selection of beryllium copper alloy requires evaluation of strength properties together with conductivity levels and corrosion resistance and formability characteristics. Alloy C17200 provides maximum strength properties but other beryllium copper variants excel in electrical and thermal applications.
What is the density of beryllium copper?
Beryllium copper density is about 8.25 g/cm³ and 0.298 lb/in³.
What factors affect the beryllium copper price?
Beryllium copper prices depend on copper and beryllium market rates worldwide in combination with alloy grades such as C17200 and production expenses and aerospace and electronics market requirements. The price of beryllium copper increases when customers request custom shapes or when they need small batch orders.
How to Select the Right Beryllium Copper Alloy for the Right Application?
When selecting a beryllium copper alloy, consider the application’s strength, electrical & thermal conductivity needs, corrosion resistance & whether a non-magnetic material is required. Beryllium copper is ideal for high-performance uses like electrical contacts, springs & aerospace parts.
