High-strength elastic copper alloy materials suitable for making highly elastic conductive parts, precision spring clips, connector terminals, wear-resistant conductive parts, mold inserts, electrodes, and high-performance copper alloy functional parts.
Beryllium copper C17200 is a high-strength beryllium copper alloy material, typically containing about 2% beryllium. It features high strength, high hardness, good elasticity, good electrical conductivity, good thermal conductivity, fatigue resistance, and wear resistance. It is commonly used in spring clips, spring contacts, connectors, terminals, precision electronic components, mold inserts, electrodes, wear-resistant conductive parts, and high-performance elastic copper alloy parts. Compared toPure CopperT2 and TU2 Oxygen-Free Copper, C17200 has significantly better strength and elasticity; Compared to Brass, it offers superior electrical and thermal conductivity and elastic properties.
By focusing on application scenarios, boundaries of advantages, and non-recommended scenarios, it helps sales, customer service, and quoting staff quickly determine whether the material meets current part requirements.
High strength, good elasticity, good fatigue resistance, good wear resistance, electrical conductivity better than most ordinary copper alloys, good thermal conductivity, suitable for precision spring pieces and terminals, ideal for long-life elastic structures, and can improve strength and hardness through aging treatment.
Spring clips, spring contacts, connector terminals, relay contacts, electronic connectors, battery contact pieces, shielding spring clips, precision spring plates, conductive clips, wear-resistant conductive parts, mold inserts, injection mold thermal conductive inserts, electrodes, fixture conductive parts, precision copper sleeves, and high-life elastic parts.
Low-cost ordinary copper parts, food direct contact parts, medical implants, children's products, high-strength load-bearing structural parts, highly corrosive environment parts, high-temperature long-term load-bearing parts, copper busbar parts requiring the highest conductivity, products with strict beryllium restrictions, and parts where dust cannot be effectively controlled during processing.
The following parameters come from product information and material knowledge fields, used for design review, quotation communication, and preliminary judgment before material selection.
| Material positioning | High-strength elastic copper alloy materials suitable for making highly elastic conductive parts, precision spring clips, connector terminals, wear-resistant conductive parts, mold inserts, electrodes, and high-performance copper alloy functional parts. |
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| Precision performance | Beryllium copper C17200 is suitable for stamping, etching, CNC machining, wire cutting, bending, and precision spring forming. Planar profiles, hole positions, and terminal structures can achieve good accuracy, but the bent angle, elasticity, and springback are affected by material condition, plate thickness, rolling direction, die, heat treatment, and electroplating. Spring pieces, contact plates, and terminal parts should focus on controlling key dimensions, contact pressure, rebound height, and fatigue life. |
| Dimensional tolerances | For CNC machined beryllium copper C17200, the standard dimensional tolerances can be referenced as ± 0.02mm to ±0.10mm, while ordinary stamped or wire-cut parts can be evaluated at ± 0.05mm to ±0.20mm. The overall size and angle of bent spring pieces are affected by springback, material condition, and heat treatment. These values represent the standard reference range and are not absolute guaranteed tolerances for all structures. Elasticity, contact height, and key assembly dimensions should be separately defined as inspection standards. |
| Minimum Wall Thickness | Beryllium copper C17200 is commonly used in the form of plates, strips, rods, and wires. Precision spring plates and terminals can use thinner plates, with common thicknesses ranging from 0.05mm, 0.1mm, 0.2mm, 0.3mm, up to over 1.0mm. For ordinary structural parts, it is recommended that the wall thickness be no less than 0.5mm-0.8mm; where threads, assembly, or pressure force are needed, the thickness should be appropriate. |
| Recommended wall thickness | Standard spring clips, terminals, and contact pieces can be referenced from 0.1mm to 0.5mm; medium-elastic clips, conductive plates, and shielding spring pieces can be used from 0.2mm to 1.0mm; CNC copper alloy parts, mold inserts, electrodes, and wear-resistant conductive parts are recommended to be above 1.0mm-3.0mm, with specific requirements based on elasticity, conductive current, wear resistance, heat dissipation, and assembly requirements. |
| Minimum aperture | Stamping, etching, or laser machining aperture should be determined based on plate thickness and processing method. For stable design, it is recommended that the hole diameter be no less than one time the plate thickness, and for conventional design, it is recommended not less than 0.5mm-1.0mm. CNC drilling can achieve smaller hole diameters, but deep small holes require consideration of chip evacuation, burrs, and tool strength. Hole positions near the spring's load-bearing area should have margin spacing to prevent fatigue cracks from spreading from the hole edges. |
| Assembly clearance | For ordinary metal assemblies, it is recommended to reserve 0.05mm-0.20mm on one side; precision terminals, spring plates, and connector structures should be designed separately based on contact pressure, elastic deformation, coating thickness, and plugging/unplugging life. If gold, silver, nickel, or tin plating is needed later, additional gaps should be reserved according to the thickness of the coating. Contact components should not only pursue gaps but also meet stable contact pressure and low contact resistance. |
| Detailed performance | Beryllium copper C17200 is suitable for producing precise spring piece profiles, terminal structures, contact points, snap pins, slots, fine bending, positioning holes, and conductive contact details. Detail clarity is affected by plate thickness, stamping dies, etching and side etching, burr control, and plating. Sharp corners and narrow bridge positions should be rounded to avoid stress concentration, bending cracking, and fatigue fracture. |
| Surface effect | The original surface of beryllium copper C17200 usually appears as golden, light copper-yellow, or reddish-yellow metallic texture. Polishing produces a brighter metallic surface, brushing produces linear textures, and sandblasting produces a matte copper alloy effect. Long-term exposure to air may cause oxidation, darkening, or surface color differences. High-end connectors, terminals, and spring plates often enhance conductivity, wear resistance, and oxidation resistance through nickel, gold, silver, or tin plating. |
Based on material characteristics and suitable product ranges, customer needs are broken down into easier application directions to determine.
Spring clips, spring contacts, connector terminals, relay contacts, electronic connectors, battery contact pieces, shielding spring clips, precision spring plates, conductive clips, wear-resistant conductive parts, mold inserts, injection mold thermal conductive inserts, electrodes, fixture conductive parts, precision copper sleeves, and high-life elastic parts.
High-strength elastic copper alloy materials suitable for making highly elastic conductive parts, precision spring clips, connector terminals, wear-resistant conductive parts, mold inserts, electrodes, and high-performance copper alloy functional parts.
The core feature of beryllium copper C17200 is that it combines high strength, high elasticity, and certain electrical and thermal conductivity. It is not as soft asPure Copper, nor is it as easy to cut as ordinary Brass, but it is more suitable for precision parts that require repeated elastic deformation, conductive contact, and fatigue resistance. C17200 typically improves hardness, strength, and elasticity through solution and aging treatments, making it one of the commonly used materials in the high-end spring clip and connector field.
Based on wall thickness, hole position, assembly clearance, dimensional tolerances, and material usage risks, determine in advance whether the part structure is suitable for C17200 Beryllium Copper.
Post-processing of C17200 Beryllium Copper affects appearance, dimensions, hole position, assembly clearance, and usage validation results, and should be explained in advance during quotation, DFM review, and sample confirmation stages.
Post-processing should focus on appearance display, dimensional fitting, connection assembly, and testing verification. Parts involving assembly positions need to be reserved in advance for machining, coating, and trial assembly allowances.
For common issues such as threads, snaps, strength, temperature resistance, and weather resistance, identify in advance whether the material needs to be replaced or if another processing method should be used.
When customer demand exceeds C17200 Beryllium Copper material boundaries, it is necessary to combine strength, temperature resistance, toughness, long-term stability, and mass production goals to promptly recommend alternative materials or processing technologies.
If higher electrical and thermal conductivity is required, Pure CopperT2, TU2 Oxygen-Free Copper, or chromium-zirconium copper can be chosen; If lower cost and standard machining performance are required, Brass H59, H62, or HPb59-1 can be chosen; If better corrosion resistance and beryllium-free elastic materials are needed, phosphor bronze, tin bronze, or 301 stainless steel can be chosen; If higher strength metal structures are needed, stainless steel, spring steel, alloy steel, or titanium alloys can be chosen.
If customers require high elasticity, long lifespan, good electrical conductivity, and precise contact properties, the beryllium copper C17200 is an excellent choice. If the customer only has ordinary conductive parts or copper busbars, Pure CopperT2 or TU2 Oxygen-Free Copper is usually more economical; If the customer only needs ordinary turning hardware, Brass is more suitable; If customers have strict requirements for beryllium elements, environmental compliance, or processing safety, they should confirm material restrictions in advance and, if necessary, switch to phosphor bronze, tin bronze, or stainless steel spring materials.
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