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Beryllium
Copper Balls |
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Beryllium Copper Balls
Copper has fantastic heat and electrical conductivity. Copper
ballsare not recommended where they are exposed to corrosive
agents or high mechanical stress. Copper balls are sensitive
to corrosion from a variety of agents and is a soft metal.
Beryllium Copper balls are used in a wide range of applications
requiring very high strength and stiffness with good conductivity.
Typical uses include electrical/electronic connectors, bearings,
and corrosion resistant applications.
(Beryllium Copper)
Copper Alloy No. C17510
Chemical Composition % by
weight
Copper
(incl. Silver) |
Iron |
Nickel |
Cobalt |
Silicon |
Beryllium |
Aluminum |
97.8
Nominal |
.10
Maximum |
1.4
Minimum |
.30
Maximum |
.20
Maximum |
.20
Minimum |
.20
Maximum |
Material Properties
Precipitation hardened alloy with good
thermal conductivity and high hardness. Not suitable for case hardening or
nitrating.
Applications
Hardware: Fuse clips, fasteners, springs,
switch parts, relay parts, electrical conductors.
Industrial: Welding equipment.
Mechanical Properties
Typical for rod in HT temper
| Hardness* |
Rockwell B Scales |
98 |
| Tensile Strength** |
KSI |
115 |
| Yield Strength** |
KSI |
110 |
| Elongation** |
% in 2 inch |
14 |
*Hardness conversions are approximate
**Test values are nominal approximations and depend on specimen
size and orientation.
Physical Properties
| Thermal Conductivity |
BTU/ (sq ft-ft-hr-F) |
120-150 |
| Specific Heat |
BTU/lb/ºF @ 68F |
.10 |
| Thermal Expansion |
Per °F from 68 F to 392 F |
.0000098 |
| Density |
lb/cu in @ 68 F |
.317 |
| Electrical Conductivity* (Annealed)** |
% IACS @ 68 F |
45-48 |
| Modulus of Elasticity |
KSI |
19,000 |
*Cold worked and precipitation hardened condition
**Volume basis
The values listed above represent
reasonable approximations suitable for general engineering
use. Due to commercial variations in composition and to manufacturing
limitations, they should not be used for specification purposes.
See applicable A.S.T.M. specification references.
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