Easy cut beryllium copper – alloy M25 ( UNS C17300 )  or  Lead Beryllium Copper (Cube2Pb)–C17300 (CDA 173)  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 APPLICATIONS:

Commercial applications for this engineering material include:

Corrosion-resistant components; Current carrying springs; Welding electrodes; Electrical and electronic connectors.

Available Sizes: Custom Diameter & Sizes, Random Mill lengths

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

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

Note:

1). the units are based upon Metric.

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

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

Note:

ASTM: American Society for Testing and Materials

QQ: Federal Specification

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

Mechanical Properties:

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)