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Copper Alloy No. C17510
Beryllium Copper , RWMA Class 3
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
Fabrication Properties
| Capacity for being cold worked |
Excellent |
| Capacity for being hot formed |
Good |
| Hot forgeability rating (forging brass=100) |
- |
| Hot working temperature |
1200-1625 F or 650-765 C |
| Machinability rating (Free Cutting
Brass=100) |
- |
| Solution heat treating
temperature |
1675-1725 F or 900-950 C |
| Suitability for being joined by: |
Soldering/Good |
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Brazing/Good |
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Oxyacetylene Welding/Not Recommended |
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Gas Shielded Arc Welding/Fair |
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Coated Metal Arc Welding/Fair |
| Resistance Welding |
Spot/Good |
|
Seam/Fair |
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Butt/Fair |
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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