Beryllium Copper Alloy (UNS C17510)

Topics Covered

Introduction
Chemical Composition
Physical Properties

Mechanical Properties
Other Designations
Fabrication and Heat Treatment
     Cold Working
     Welding
     Forging
     Hot Working
Applications

Introduction

UNS C17510 beryllium copper alloys are available in mill hardened tempers and heat treatable and ductile tempers. These alloys have moderate strength and about 50% IACS conductivity.

The datasheet given below provides an overview of UNS C17510 beryllium copper alloys.

Chemical Composition

Elements Content (%)
Copper, Cu Balance
Beryllium, Be 0.20-0.60%
Nickel, Ni 1.40-2.20%

Physical Properties

The following table shows the physical properties of UNS C17510 beryllium copper alloys.

Properties Metric Imperial
Density 8.77 g/cm3 0.317 lb/in3

Mechanical Properties

The mechanical properties of UNS C17510 beryllium copper alloys are displayed in the following table.

Properties Metric Imperial
Hardness, Rockwell B (any thickness) ≥ 90.0 ≥ 90.0
Tensile strength at break (@thickness ≥50.8 mm/ @thickness ≥2.00 in) ≥ 607 MPa ≥ 88000 psi
Tensile strength at break [email protected] 25.4-50.8 mm/ @thickness 1.00 - 2.00 in) ≥ 621 MPa ≥ 90000 psi
Tensile strength at break (@thickness 25.4 mm/ @thickness ≤1.00 in) ≥ 648 MPa ≥ 94000 psi
Tensile strength, yield (@strain 0.500%, thickness 50.8 mm/ @strain 0.500 %, thickness 2.00 in) ≥ 607 MPa ≥ 88000 psi
Tensile strength, yield (@strain 0.500%, thickness 25.4-50.8 mm/ @strain 0.500%, thickness 1.00 - 2.00 in) ≥ 621 MPa ≥ 90000 psi
Tensile strength, yield (@strain 0.500%, thickness 25.4 mm/ @strain 0.500%, thickness 1.00 in) ≥ 648 MPa ≥ 94000 psi
Modulus of elasticity 131 GPa 19000 ksi
Poissons ratio 0.267 0.267
Shear modulus 51.7 GPa 7500 ksi

Other Designations

Equivalent materials to UNS C17510 beryllium copper alloys are:

  • ASTM B441
  • ASTM B534
  • MIL C-81021
  • SAE J461
  • SAE J463

Fabrication and Heat Treatment

Cold Working

UNS C17510 copper alloys have excellent cold working capacity.

Welding

Welding processes such as brazing, gas shielded arc welding, butt welding, seam welding, coated metal arc welding, soldering and spot welding are recommended for UNS C17510 copper alloys, whereas oxyacetylene welding is not suitable for these alloys.

Forging

UNS C17510 copper alloys can be hot worked between 648 and 885°C (1200 and 1625°F).

Hot Working

UNS C17510 copper alloys can be hot formed in an excellent manner.

Applications

The applications of UNS C17510 copper alloys include:

  • Plastic molds
  • Bearings
  • Electrical/electronic connectors
  • Precision screw machined parts
  • Corrosion resistant components
  • Current-carrying springs
  • Welding electrodes

Comments

  1. Pilar Suarez Pilar Suarez United States says:

    Do you have any data for Tensile strength up to 250 degrees Celsius?

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