Typical Application for C17500 Cobalt Beryllium Copper Alloys

Electrical Industry: Fuse Clips, Switch Parts, Relay parts, Connectors, Spring Connectors
Fasteners: Washers, Fasteners
Industrial: Springs, Seam Welding Dies, Resistance Welding Equipment, Resistance and Spot Welding Tips, Tooling for Plastic Moulds, Die–Casting Plunger Tips.

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, Sheets, Coils
Custom shapes are available upon request.

Chemical Composition

Be: 0.40-0.70%
Co: 2.40-2.70%
Cu: Balance
Note: Copper plus additions equal 99.5% minimum.

Typical Physical Properties

Density (g/cm3): 8.83
Density before age hardening (g/cm3): 8.75
Elastic Modulus (kg/mm2 (103)): 14.10
Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): 18 x 10-6
Thermal Conductivity (cal/(cm-s-°C)): 0.48
Melting Range (°C): 1000-1070

Note:

1). the units are based upon Metric.
2). the typical physical properties apply to age hardened products.

International Specification

Rods/Bars/Tubes: ASTM B441, SAE J461,463; RWMA Class 3
Strips: ASTM B534
Sheets: ASTM B534
Wires: ASTM B441
Plates: ASTM B534, SAE J461,463; RWMA Class 3

European Standards:CuCo2Be, DIN 2.1285; CW104C to EN

Note:

ASTM: American Society for Testing and Materials
SAE: Society of Automotive Engineers
AMS:Aerospace Materials Specification (Published by SAE)
RWMA:Resistance Welder Manufacturers’ Association
Note: Unless otherwise specified, material will be produced to ASTM.

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)
Strips: A(TB00),1/4 H(TD01),1/2 H(TD02),H(TD04)
Sheets: A(TB00),1/4 H(TD01),1/2 H(TD02),H(TD04),AT(TF00)
Wires: A(TB00),1/4 H(TD01),1/2 H(TD02),3/4H(TD03),H(TD04)
Plates: AT(TF00),HT(TH04)