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)
