C17200 Beryllium Copper

C17200 Beryllium Copper

Balance
Copper Content
1.8–2.0%
Beryllium Content
≤0.6%
Nickel + Cobalt
C17200 beryllium copper is a high-strength copper alloy offering excellent mechanical properties, fatigue resistance, electrical conductivity, and corrosion resistance. It is widely used for precision springs, electrical connectors, molds, welding electrodes, and high-performance industrial components.
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Lead Time: 3-5 Business Days

Product Overview

C17200 beryllium copper, also known as Alloy 172, is one of the most widely used copper-beryllium alloys. With approximately 2% beryllium content, it achieves an excellent combination of high strength, hardness, electrical conductivity, and corrosion resistance through age-hardening treatment.

Compared with conventional copper alloys, C17200 provides significantly higher mechanical strength while maintaining good electrical and thermal conductivity. Its outstanding fatigue resistance, wear resistance, and dimensional stability make it suitable for demanding precision applications.

C17200 beryllium copper is widely used in electrical connectors, relay components, springs, switches, molds, welding electrodes, aerospace components, and non-sparking tools where high reliability and long service life are required.

Key Features

Extremely high strength after age hardening
Excellent fatigue and wear resistance
Good electrical and thermal conductivity
Superior corrosion resistance
Excellent dimensional stability
Good machinability and formability

Available Sizes

Copper Shape Thickness (mm) Width/Diameter (mm) Length (m)
Bar - Φ5-200 1-6
Wire - Φ0.05-10 Customize
Sheet 0.25-6 500-2500 1-6
Plate 6-200 200-3000 1-6
Strip 0.15-6 8-610 Customize
Tube OD: φ2-600; WT:φ0.2-100mm - 1-6
Coil 0.15-6 3-1250 1-6
Foil < 0.15 10-1350 Customize
Profile Customized Customize Customize

* Custom sizes available upon request. Contact our sales team for special requirements.

Technical Specifications

Precision data for engineering decisions. All values tested per ASTM standards.

01 Material Properties

Specification Value Notes
Copper (Cu) Content Balance Base copper alloy
Beryllium (Be) Content 1.8–2.0% Provides age-hardening strength
Nickel + Cobalt ≤0.6% Alloying elements
Density 8.26 g/cm³ Typical value
Electrical Conductivity 22–32% IACS Depends on temper
Thermal Conductivity 105–130 W/m·K Typical range
Tensile Strength 1100–1400 MPa After aging treatment
Yield Strength 1000–1300 MPa Age hardened condition
Hardness 35–45 HRC Depends on temper
Elongation 2–15% Depends on condition
Fabrication Machining / Stamping / Forming Good processing performance

Applications & Use Cases

Proven solutions across diverse industries. From aerospace to marine environments.

FAQ — C17200 Beryllium Copper

Common engineering questions on C17200 beryllium copper: composition, standards, properties and supply.

C17200, also called Alloy 25 or CuBe2, contains 1.8–2.0% beryllium with cobalt+nickel at least 0.20%. It is the highest-strength copper alloy and is used where strength, fatigue life and conductivity must combine.
C17200 is covered by ASTM B194 (strip/plate), B196 (rod/bar) and B197 (wire). Tempers run from solution-annealed (TB00) through mill-hardened (TDxx) to age-hardened (TF00/TH04).
Age-hardened tempers reach about 1160–1550 MPa tensile strength with 22–28% IACS conductivity — roughly 10× the strength of pure copper while retaining useful conductivity. Solution-annealed stock is soft and formable before aging.
Springs, connectors, switch blades, bearings, non-sparking tools, weld fixtures and precision molds. Its non-magnetic nature and fatigue resistance suit electromechanical and aerospace parts.
Linsy Copper supplies C17200 beryllium copper against ASTM specs with per-order MTR/MTC, SGS on request, RoHS/REACH compliance, low-MOQ custom production and a 10–60 day lead time, with quote response within 1 hour.
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