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The C17200 beryllium bronze round bar is a type of age-hardening alloy that combines extremely high strength with excellent electrical conductivity.
After undergoing solution aging heat treatment, the tensile strength of this material can exceed 1200 MPa, and its hardness is comparable to that of high-strength alloy steel. Meanwhile, it retains the inherent thermal conductivity, corrosion resistance, and fatigue resistance of copper. Due to its non-magnetic induction in strong magnetic fields and its inability to spark when subjected to impact and friction, the C17200 round bar is widely used in the manufacturing of precision contacts for aerospace, non-magnetic wear-resistant bushings for oil drilling and well logging (MWD) instruments, high-pressure valves, and explosion-proof tools. It is an indispensable high-end metal material in demanding industrial environments.
The C17200 beryllium bronze round bar is a type of age-hardening alloy that combines extremely high strength with excellent electrical conductivity.
After undergoing solution aging heat treatment, the tensile strength of this material can exceed 1200 MPa, and its hardness is comparable to that of high-strength alloy steel. Meanwhile, it retains the inherent thermal conductivity, corrosion resistance, and fatigue resistance of copper. Due to its non-magnetic induction in strong magnetic fields and its inability to spark when subjected to impact and friction, the C17200 round bar is widely used in the manufacturing of precision contacts for aerospace, non-magnetic wear-resistant bushings for oil drilling and well logging (MWD) instruments, high-pressure valves, and explosion-proof tools. It is an indispensable high-end metal material in demanding industrial environments.
| Item | Details |
| Standard | ASTM B196/B196M-20 (Standard Specification for Beryllium Copper Alloy |
| Product Form | Solid round bar |
| Size Range | Diameter Φ1.0mm – Φ200mm; standard length 2500–3000mm |
| Custom Sizes | Cut-to-length based on drawings; precision cutting available |
| Dimensions | Round bar: OD tolerance ±0.01mm–±0.05mm (customizable) |
| Surface Finish | Turned, ground, or pickled & passivated |
| Delivery Condition | Solution-annealed (O), aged (TH), or semi-hard (SH) |
Supply Capabilities
Standards: ASTM B196 / B196M (US Standard); equivalent to Chinese grade QBe2
Dimensions: Diameter Φ1.0mm – Φ200mm; standard length 2500–3000mm; custom cutting to drawing specifications available
Delivery Condition: Solution-annealed (suitable for customer processing + aging), aged (ready for immediate use), or half-hard
Surface Finish: Turned, ground, or pickled (per customer requirements)
Ancillary Services: EN 10204 3.1 material certification, heat treatment reports, third-party inspection reports (SGS/BV), and batch traceability
Chemical composition & Mechanical property
| Element | Be | Ni | Co | Cu | Total Impurities | ||
| Standard Value | 1.80~2.10 | 0.20~0.60 | 0.20~0.60 | Balance | ≤0.5% | ||
| Delivery Condition | Tensile Strength (Rm) MPa | Yield Strength (Rp0.2) MPa | Elongation A50 % | Brinell Hardness HB | Rockwell Hardness HRC | Electrical Conductivity % IACS | |
| Solution-annealed | 400~500 | 180~250 | ≥20 | ≤100 | – | ≥22 | |
| Age-hardened | 1100~1350 | 1000~1200 | ≥1 | 330~380 | 38~44 | ≥20 | |
| Half-hard | 700~900 | 600~800 | ≥5 | 220~280 | 25~32 | ≥21 | |
| Industry | Applicable Conditions | Product Forms |
| Precision Electronics / Telecommunications | High elasticity, high conductivity, fatigue resistance | Connector springs, switch contacts, conductive contact springs, RF components |
| Mold Making | Wear resistance, thermal conductivity, anti-galling, high hardness | Mold inserts, ejector pins, slides, cooling components for injection molds |
| Aerospace | Non-magnetic, corrosion resistance, high-temperature resistance, lightweight | Instrument elastic elements, aerospace connectors, seals, fasteners |
| Automotive | Industry Vibration resistance, fatigue resistance, electrical/thermal conductivity | Automotive sensor contact springs, ignition system components, bearing sleeves |
| Petrochemical Industry | Corrosion resistance, spark resistance, non-magnetic | Downhole instrument parts, chemical valve components, explosion-proof components |
| Medical Devices | Biocompatibility, corrosion resistance, high precision | Surgical instrument elastic parts, precision medical instrument components |
| Instrumentation | High precision, high elasticity, interference resistance | Pressure gauge Bourdon tubes, sensor components, tuning components |
| Material | C17200 Beryllium Copper | QSn6.5-0.1 Phosphor Bronze | 65Mn Spring Steel | H62 Brass |
| Initial Purchase Cost | Medium-High | Medium | Low | Low |
| Service Life | Very Long (3–5 times that of phosphor bronze) | Medium | Relatively Short | Short |
| Maintenance Cost | Very Low (corrosion-resistant, maintenance-free) | Medium | High (prone to rust/corrosion) | Relatively High |
| Processing Cost | Low (easy to process in solution-treated state) | Medium | Relatively High (difficult to process due to high hardness) | Low |
| Failure/Replacement Cost | Very Low | High | Very High | High |
| Overall Life-Cycle Cost | Best | Relatively High | High | Relatively High |
Testing & Inspection:
Chemical Composition Analysis: Direct-reading spectroscopic analysis, compliant with ASTM B196 standards;
Mechanical Property Testing: Universal testing machine for tensile/yield strength and elongation; hardness testing (HB/HRC);
Dimensional Accuracy Inspection: Micrometers, calipers, and laser diameter gauges to strictly control diameter and length tolerances;
Surface Quality Inspection: Visual and instrumental inspection to ensure a defect-free finish meeting quality standards;
Non-Destructive Testing (NDT): Ultrasonic testing to detect internal flaws and ensure the absence of inclusions or cracks;
Heat Treatment Verification: Traceability of aging processes to ensure stable, compliant performance.
Production Capabilities:
Customization across all specifications: Breaking standard size limits with a full range from Φ1.0mm to Φ200mm and flexible length cutting to meet specific requirements;
Customized tempers: Production of solution-annealed, aged, or half-hard tempers to suit specific customer machining and application conditions;
Flexible small-batch production: Support for sample orders and small-batch trial runs to reduce customer R&D costs;
Integrated precision machining: One-stop processing from raw material to finished component—no need for outsourcing;
Rapid delivery: Immediate shipment of standard stock items and quick 7–15 day turnaround for custom orders;
Technical support: Professional engineers provide one-on-one guidance on material selection, heat treatment, and machining processes.
Q1: How should I choose between the solutionized state and the aged state of the C17200 round bar?
A: For secondary processing (turning, bending, stamping), select the solutionized state. After processing, it can be aged at 150-180℃ for 2-3 hours to achieve strengthening; for processing-free use, select the aged state. Once received, it can be assembled directly.
Q2: Are C17200 and QBe2 the same material?
A: Yes, C17200 is the American standard designation, while QBe2 is the Chinese standard designation. Their chemical composition and properties are exactly the same, and they can be used interchangeably.
Q3: What tolerance can be achieved for the beryllium bronze round bar?
A: The regular diameter tolerance is ±0.05mm. For high-precision polished bars, it can be achieved at ±0.01mm, meeting the requirements for precision components.
Q4: Can C17200 be welded?
A: Yes, the welding performance of the solutionized state is excellent. After welding， it can be re-aged to restore its properties.
Q5: Is the material environmentally friendly and does it comply with export standards?
A: It complies with the RoHS environmental directive. We can provide an SGS test report and is suitable for export to markets such as Europe, America, and Southeast Asia.
Q6: How long can the round bar be made? Can it be cut in zero length?
A: The regular maximum length is 3000mm. Customized longer sizes can be provided for large-sized bars. Zero-length cutting is supported for any length, with a minimum order of one piece.
Q7: How is the conductivity of C17200?
A: The conductivity is above 20% IACS. It is at a medium level in high elastic copper alloys, balancing both elasticity and conductivity requirements.
Q8: What are the precautions for storage and processing?
A: It can be stored in a normal temperature and dry environment. The solutionized state processing does not require special processes. For the aged state, avoid excessive high-temperature processing to prevent performance degradation.
