Beryllium Copper Machined Bushing
Grade Equivalents: UNS C17200 / CuBe2 / Alloy 25 / RWMA Class 4 / EN CW101C / DIN 2.1247
Application Focus: Flight control actuators, landing gear pivot joints, hydraulic pump bearing housings, downhole drilling motor assemblies, and other high-reliability rotating/pivot applications where custom geometry and tight tolerances are mandatory.
Executive Standards: ASTM B196 (raw material), AMS 4650 (aerospace-grade alloy), SAE J463, ISO 5182
Size Range: Fully custom – OD 10mm – 500mm, ID 5mm – 450mm, wall thickness 2mm – 50mm, machined precisely to customer-provided engineering drawings.
Temper Condition: Solution heat-treated (TB00) + precipitation hardened (AT / TF00) to achieve full mechanical properties prior to finish machining.
Core Purpose: To provide a ready-to-install, precision-machined bushing that combines C17200's proven anti-galling, high-load, and zero-spark characteristics with CNC accuracy and full AS9100 aerospace quality traceability.
Quality Assurance: ISO9001:2015, AS9100D Aerospace Standard, RoHS Compliant, EN 10204 3.1 Mill Test Certificate supplied with every shipment.
Description
Beryllium Copper Machined Bushing for Aerospace & Industrial Applications
The Beryllium Copper Machined Bushing alloy C17200 Alloy 25 is used to make our machined beryllium copper bushing. The component exhibits a hardness of 38–44 HRC and a tensile strength of up to 1400 MPa during precipitation ageing. With more than 25 years of experience producing copper alloys, we can execute CNC machining in accordance with customer specifications, guaranteeing concentricity within ±0.005 mm and bore surface roughness at Ra 0.2-0.4 µm.
An EN 10204 3.1 test certificate is included with every batch for complete material traceability. Every product satisfies RoHS, ISO 9001:2015, AMS 4650, and ASTM B196 standards.
What Is a Beryllium Copper Machined Bushing?
Unlike cast or sintered parts, a beryllium copper machined bushing is a precise load-bearing sleeve created by CNC turning.
Material Source: In compliance with strict technical specifications, age-hardened and solution-annealed C17200 bar material was used throughout construction.
Performance Balance: Combines steady mechanical strength comparable to steel with dependable copper heat conductivity.
Application Fit: Adapts to work environments with stringent magnetic field control, inadequate lubrication, and 0% component seizure requirements.
Problem Solving: Expertly handles typical industrial problems such as galling, frictional heat buildup, and electromagnetic interference.
Material Specifications
| Parameter | Value |
|---|---|
| Grade | UNS C17200 / CuBe2 / Alloy 25 |
| Grade Equivalents | CW101C / DIN 2.1247 / RWMA Class 4 |
| Be Content | 1.80 – 2.00% |
| Co+Ni (min) | 0.20% |
| Co+Ni+Fe (max) | 0.50% |
| Cu | Balance |
| Temper Condition | TB00 (Solution Annealed) + TF00/AT (Aged) |
| Tensile Strength | 1,170 – 1,400 MPa |
| Yield Strength | 980 – 1,200 MPa |
| Hardness (Aged AT) | 38 – 44 HRC / 370 – 440 HV |
| Thermal Conductivity | 105 – 130 W/m·K |
| Magnetic Permeability | < 1.001 (Non-Magnetic) |
| Executive Standards | ASTM B196, AMS 4650, SAE J463, ISO 5182 |
Dimensional Range & Customization
We offer fully customized bushing dimensions with no fixed standard sizes, all processed according to customer engineering drawings. The dimensional coverage includes 10–500mm outer diameter, 5–450mm inner diameter and 2–50mm wall thickness. Machining tolerance is controlled at ±0.005mm concentricity, with honed and polished bore surface reaching Ra 0.2–0.4 µm. Various structures are supported, including straight sleeve, flanged, oil groove and stepped types, with custom keyways and special groove structures available on request.
Primary Application Areas
For impact load resistance and dependable operation, landing gear pivot joints and aircraft flight control actuators are fitted with beryllium copper machined bushings, which are extensively used in a variety of industrial applications. It is appropriate for downhole MWD tools for oil and gas that can adjust to corrosive, high-temperature, high-pressure well conditions without experiencing magnetic interference. It is utilized in mold guides and core pin bushings to accelerate heat dissipation and preserve long-term machining tolerance stability, as well as hydraulic machinery pumps and heavy equipment pivot joints for long-cycle anti-wear operation.
Quality Control Process
Every completed bushing goes through a five-phase, uniform inspection process. The chemical composition of raw materials is confirmed by OES spectral analysis; qualified aging treatment is confirmed by Rockwell hardness testing; full-process dimensional accuracy is controlled by CMM and air gage testing; bore surface roughness is detected by profilometers; and internal porosity and microcracks are eliminated by fluorescent penetrant inspection. For batch delivery, all test data is grouped into EN 10204 3.1 certifications.
Frequently Asked Questions
Q1: Why choose C17200 beryllium copper over aluminum bronze?
A1: C17200 has higher fatigue strength and thermal conductivity. It reduces replacement frequency and lowers overall operating costs in high-load and high-cycle working conditions.
Q2: Are solid finished bushings safe to handle?
A2: Solid products cause no safety risks during installation and use. Protective measures are only required during machining and grinding that produce fine particles.
Q3: In high-wear sliding situations, which surface finish is best?
A3: Ra 0.4–0.8 µm is appropriate for standard lubrication working circumstances, whereas Ra 0.2–0.4 µm is appropriate for dry and boundary lubrication settings.
Q4: Does C17200 adjust to vacuum and low temperatures?
A4: Because of its low vapor pressure, it maintains constant ductility and strength at cryogenic temperatures, making it suitable for use in vacuum equipment and aviation actuator applications.
Contact Us
Submit your engineering drawings and technical inquiries to js01@jstongcai.com.cn. Our team will provide professional technical support and detailed quotation within 24 hours for your customized beryllium copper machined bushing solutions.
