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CuBe2Pb - UNS. C17300 Leaded Beryllium Copper Tube/Pipe

CuBe2Pb – UNS.C17300 Leaded Beryllium Copper


A).C17300 Details

C17300 Leaded Beryllium Copper

Cube2Pb--C17300 (CDA 173) The Leaded Beryllium Copper is identical to a version of lead-containing alloy C17200 and achieves the same exceptional strength after hardening. C17300 rods contain a small amount of lead to provide an alloy tailored for automatic machining operations and the Lead promotes formation of finely divided chips thus extending cutting tool life. 


Typical Application for C17300 Leaded Beryllium Copper Alloys:


Electrical Industry: Switch Parts, Relay parts, Electrical Connectors, Fuse Clips, Contact Bridges, Electrical Motor Components, Navigational Instruments, Electrical Switch and Relay Blades.

Fasteners: Washers, Fasteners, Lock Washers, Retaining Rings, Roll Pins, Screws, Bolts

Industrial: Bushings, Non-Sparking Safety Tools, Shafts, Pumps, Springs, Welding Equipment, Rolling Mill Parts, Spline Shafts, Pump Parts, Valves, Bourdon Tubes, Bellows, Electrochemical Springs, Flexible Metal Hose


Available Sizes:

Custom Diameter & Sizes, Random Mill lengths


Available Products (forms):

Round bars, Round wires, Round tube

Flat bars, Square bars, Rectangular bars, Hexagon bars, Plates

Custom shapes are available upon request.



C17300 Leaded Beryllium Copper Alloys

Chemical Composition

Be: 1.85-2.10%

Co+Ni: 0.20% Min.

Co+Ni+Fe: 0.60% Max.

Lead: 0.20-0.60%

Cu: Balance

Note: Copper plus additions equal 99.5% minimum.



C17300 Leaded Beryllium Copper Alloys

Typical Physical Properties

Density (g/cm3): 8.36

Density before age hardening (g/cm3): 8.25

Elastic Modulus (kg/mm2 (103)): 13.40

Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): 17 x 10-6

Thermal Conductivity (cal/(cm-s-°C)): 0.25

Melting Range (°C): 870-980



1). the units are based upon Metric.

2). the typical physical properties apply to age hardened products.


C17300 Leaded Beryllium Copper Alloys

International Specification


Rods/Bars/Tubes: ASTM B196, QQ-C-530

Wires: ASTM B197, QQ-C-530

Plates: ASTM B194


European Standards: DIN 2.1248, CW102C to EN



ASTM: American Society for Testing and Materials

QQ: Federal Specification

Note: Unless otherwise specified, material will be produced to ASTM. 



C17300 Leaded Beryllium Copper Alloys

Mechanical Properties:

The Mechanical Properties will be available on request from customers.


Most Commonly Temper Used:


Rods/Bars/Tubes: A(TB00),H(TD04),AT(TF00),HT(TH04)

Wires: A(TB00),1/4 H(TD01),1/2 H(TD02),3/4H(TD03),H(TD04)

Plates: A(TB00),H(TD04),AT(TF00),HT(TH04)



C17300 Leaded Beryllium Copper Alloys


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