Titanium Copper Alloy
Titanium Copper NKT322 ― The best alternative to beryllium copper
NKT322
GIGALLOY® High Strength Copper Alloy for Connectors (UNS Alloy No. C19910)
Overview
NKT322 GIGALLOY® is a proprietary alloy we developed by adding small amounts of iron to titanium copper and further improving processes. It is notably stronger than ordinary titanium copper and has better bend formability.
Features
A beryllium-free ultra-high-strength copper alloy
Strength and bend formability equal to or greater than mill-hardened beryllium copper: In wide use as an alternative product
The highest level of stress relaxation resistance among copper alloys: Maintains contact force at high temperatures
Table 1. NKT322 chemical composition (%)
| Ti | Fe | Cu+Ti+Fe | |
|---|---|---|---|
| Standard composition | 2.9~3.4 (3.2% target) |
0.17~0.23 | ≧99.5 |
Table 2. Physical properties of NKT322
| Electrical conductivity | 12 | %IACS (@20℃) |
|---|---|---|
| Specific resistance | 144 | nΩ·m (@20℃) |
| Thermal conductivity | 66.79 | W/mK |
| Linear expansion coefficient | 18.0 | ×10-6/K (20 to 300℃) |
| Modulus of elasticity | 120 | GPa |
| Density | 8.70 | g/cm3 |
Table 3. Mechanical properties of NKT322
| Temper | Tensile strength (MPa) |
Yield strength (MPa) |
Elongation (%) |
Vickers hardness (Hv) |
|
|---|---|---|---|---|---|
| H | Typical value | 950 | 850 | 18 | 300 |
| Specification range | 900-1000 | 800-900 | 12min | - | |
| EH | Typical value | 970 | 900 | 15 | 310 |
| Specification range | 920-1020 | 850-950 | 10min | - | |
| SH | Typical value | 1020 | 950 | 10 | 320 |
| Specification range | 970-1100 | 900-1000 | 6min | - | |
| ESH | Typical value | 1070 | 1000 | 5 | 340 |
| Specification range | 1010-1200 | 950-1050 | 3min | - | |
- Standard values are shown for tensile strength, Yield strength, and elongation, while typical values are given for Vickers hardness.
Correlation between Yield strength and bend formability
- Test piece shape: 0.1 mm thick × 10 mm wide × 30 mm long
For reference purpose only. They are observed values, not guaranteed values.
Stress relaxation resistance
- For reference purpose only. They are observed values, not guaranteed values.
Contact Information
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