Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of uns c17200 beryllium copper alloys in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
UNS C17200 Beryllium Copper Alloy, also known as C172 BeCu, Alloy 25, high-strength beryllium copper, and precipitation-hardened copper alloy, is the highest-strength copper-based alloy available. With exceptional tensile strength (up to 1400 MPa), excellent fatigue resistance, good conductivity, and outstanding corrosion and wear performance, C17200 is widely used in aerospace, connectors, precision instruments, springs, oil & gas, and high-performance industrial components.
Our factory supplies C17200 rods, bars, plates, strips, foil, and wire manufactured according to ASTM B196, ASTM B197, AMS 4533, AMS 4534, with tight tolerances, uniform mechanical properties, and full MTC EN10204 3.1. Global buyers rely on our stable quality, fast delivery, and strong manufacturing standards.
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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
International Standard Size Chart (Metric + Imperial + Tolerance)
C17200 Rod & Bar
| Diameter (mm) | Diameter (inch) | Length (mm) | Length (inch) | Tolerance |
|---|---|---|---|---|
| 3 – 200 | 0.118 – 7.87 | 1000 – 6000 | 39 – 236 | ±0.02 – 0.20 mm |
C17200 Plate / Sheet
| Thickness (mm) | Thickness (inch) | Width (mm) | Width (inch) | Length (mm) | Length (inch) | Tolerance |
|---|---|---|---|---|---|---|
| 0.5 – 50 | 0.020 – 1.97 | 300 – 1500 | 11.8 – 59.1 | 1000 – 4000 | 39 – 157 | ±0.05 – 0.30 mm |
C17200 Strip / Coil / Foil
| Thickness (mm) | Thickness (inch) | Width (mm) | Width (inch) | Form | Tolerance |
|---|---|---|---|---|---|
| 0.05 – 1.5 | 0.002 – 0.059 | 3 – 600 | 0.12 – 23.6 | Coil | ±0.01 – 0.05 mm |
C17200 Wire
| Diameter (mm) | Diameter (inch) | Form | Tolerance |
|---|---|---|---|
| 0.1 – 10 | 0.004 – 0.394 | Coil / spool | ±0.005 – 0.05 mm |
All dimensions comply with ASTM B196 / B197 / B194 standards.
Chemical Composition (wt%) – C17200 Alloy 25
| Be | Co + Ni | Fe | Pb | Cu |
|---|---|---|---|---|
| 1.8 – 2.0 | 0.2 – 0.6 | ≤0.15 | ≤0.02 | Balance |
Mechanical Properties (Typical Values by Temper)
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRC / HV) | Conductivity (% IACS) |
|---|---|---|---|---|---|
| A (Annealed) | 410 – 550 | 200 – 380 | 20 – 40 | 30 – 80 HV | 22 – 28 |
| 1/2H | 965 – 1100 | 830 – 965 | 6 – 12 | 34 – 38 HRC | 18 – 22 |
| H (Full Hard) | 1100 – 1240 | 965 – 1100 | 4 – 8 | 38 – 42 HRC | 18 – 22 |
| HT (Heat Treated) | 1240 – 1380 | 1100 – 1240 | 3 – 6 | 42 – 45 HRC | 17 – 20 |
| AT (Peak Strength) | 1310 – 1400 | 1200 – 1350 | 2 – 4 | 45 – 48 HRC | 17 – 20 |
Comprehensive Comparison Table of Beryllium Copper Alloys
| Grade | Main Characteristics | Chemical Composition (wt%) | Mechanical Properties (Typical) | Heat Treatment Condition | Typical Applications |
|---|---|---|---|---|---|
| C17000 (High-Beryllium Copper) | Highest strength among Be–Cu; excellent fatigue resistance | Be: ~0.2% • Co/Ni: 0.6–1.2% • Cu: Balance | Tensile Strength: ≥ 1380 MPa • Yield Strength: ≥ 1200 MPa • Elongation: ≥ 3% • Hardness: 38–45 HRC | Precipitation Hardening | Heavy-load springs, aerospace connectors, high-performance tools |
| C17200 (Alloy 25) | Most widely used Be–Cu; best combination of strength & conductivity | Be: 1.8–2.0% • Co/Ni: 0.2–0.6% • Cu: Balance | Tensile Strength: 1100–1400 MPa • Yield Strength: 1000–1200 MPa • Elongation: 2–10% • Hardness: HRC 38–44 / HV 280–420 | Solution + Age Hardening | Precision springs, valve seats, oil & gas tools, electrical contacts |
| C17300 (Free-Cutting Be–Cu) | Same strength as C17200 but superior machinability (Pb added) | Be: 1.8–2.0% • Pb: 0.2–0.6% • Co/Ni: 0.2–0.6% • Cu: Balance | Tensile Strength: 1100–1300 MPa • Yield Strength: ≥1000 MPa • Hardness: HRC 36–42 | Age Hardened | CNC machining parts, high-precision connectors, fasteners |
| C17500 (Alloy 3) | High strength + high conductivity; lower Be content | Be: 0.4–0.7% • Co/Ni: 1.4–2.2% • Cu: Balance | Tensile Strength: 690–1030 MPa • Yield Strength: ≥ 600 MPa • Electrical Conductivity: 45–60% IACS | Age Hardened | Resistance welding electrodes, switches, aerospace bushings |
| C17510 (Alloy 10) | Enhanced conductivity and strength; high-performance variant of C17500 | Be: 0.3–0.6% • Co/Ni: 1.9–2.7% • Cu: Balance | Tensile Strength: 760–1100 MPa • Yield Strength: ≥ 700 MPa • Conductivity: 48–60% IACS | Age Hardened | High-current contacts, welding arms, industrial automation components |
Key Features & Advantages
Highest strength among all copper alloys
Exceptional fatigue and wear resistance
Good electrical and thermal conductivity
Excellent stress relaxation resistance
Suitable for extreme environments
Non-magnetic and corrosion-resistant
Stable properties after age hardening
Product Applications
Aerospace fasteners & structural components
High-performance springs & diaphragms
Electrical connectors & terminals
Oil & gas drilling tools
Precision mould inserts & wear parts
Automotive safety systems
High-reliability sensors & instruments
Inspection & Quality Assurance
100% chemical composition test by spectrometer
Microstructure examination for grain uniformity
Mechanical testing: tensile, hardness, elongation
Dimensional inspection for diameter, thickness, width
Surface roughness and edge condition checks
Ultrasonic / Eddy current testing (optional)
Third-party inspection: SGS / BV / TUV
Export-standard packaging: vacuum sealing, wooden crates, moisture protection
Need high-strength UNS C17200 Beryllium Copper Alloy in bar, rod, plate, strip, foil, or wire?
Contact us for best factory prices and fast delivery.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
Q1: Is UNS C17200 the same as Alloy 25?
Yes, C17200 is also known as Alloy 25 (BeCu 25).
Q2: What is the maximum strength of C17200?
Tensile strength can reach up to 1400 MPa after age-hardening.
Q3: Is C17200 safe to machine?
Yes, but dust control and proper ventilation are required.
Q4: Do you supply age-hardened or solution-treated materials?
Yes, we offer AT / HT / M25 / A / 1/2H / H tempers.
Q5: Can C17200 be welded?
It is weldable but requires professional processes to prevent cracking.
Q6: What is its conductivity?
Typically 17–22% IACS depending on the temper.
Q7: Do you provide EN10204 3.1 certificates?
Yes, all shipments include MTC 3.1.
Q8: Can you supply strips for stamping?
Yes, we supply precision strip coils with tight tolerance ±0.01 mm.
Q9: What is the heat treatment condition?
C17200 requires solution treatment + age hardening to reach peak strength.
Q10: Can you provide third-party inspection?
Yes, SGS, BV, and TUV inspections are available.
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