[DATA]
 Chemical composition and shape-recovery temperature
| Properties |
Ni |
Ti |
Co |
Cu |
Shape-recovery
temperature |
| Ni-Ti ùêÐÝ(KIOKALLOY) |
54 ~ 56 |
Bal. |
- |
- |
20 ~ 100¡É |
| Ni-Ti-Co ùêÐÝ(KIOKALLOY-S) |
53 ~ 55 |
Bal. |
1 ~ 3 |
- |
-30 ~ 30¡É |
| Ni-Ti-Cu ùêÐÝ(KIOKALLOY-T) |
47 ~ 50 |
Bal. |
- |
5 ~ 8 |
40 ~ 70¡É |
Shape-recovery temperature varies depending on forming and heat treatment conditions.
Mechanical properties
| Properties |
Ni-Ti alloy |
Ni-Ti-Co alloy |
Ni-Ti-Cu alloy |
| Martensitic phase |
Tensile strength (kgf/mm²) |
1175~1370
(120~140) |
1370~1570
(140~160) |
1175~1765
(120~180) |
| Yield strength (kgf/mm²) |
~196 (~20) |
~294 (~30) |
68~98(7~10) |
| Elongation (%) |
~50 |
~50 |
~20 |
| Horizontal modulus of elasticity (kgf/mm²) |
7845~9800
(800~1000) |
9800~13730
(1000~1400) |
0~4900
(0~500) |
| Austentitic phase |
Tensile strength (kgf/mm²) |
1075~1175
(110~120) |
1275~1370
(130~140) |
1175~1765
(120~180) |
| Yield strength (kgf/mm²) |
390~785
(40~80) |
490~980
(50~100) |
390~785
(40~80) |
| Elongation (%) |
~20 |
~20 |
~20 |
| Horizontal modulus of elasticity (kgf/mm²) |
17650~21575
(1800~2200) |
25500~28440
(2600~2900) |
19615~27460
(2000~2800) |
Mechanical properties vary depending on heat treatment conditions and service temperatures.
Comparision of physical properties
| Properties |
Ni-Ti alloy |
Ti |
SUS304 |
Cu |
| Density (gr/cm²) |
6.5 |
4.5 |
7.70 |
8.89 |
| Melting point (¡É) |
1250~1280 |
1668 |
1400~1420 |
1083 |
| Spectific heat (cal/g¡É) |
0.061 |
0.124 |
0.12 |
0.092 |
| Coefficient of theermal conductivity (cal/cm²Csec) |
0.05 |
0.041 |
0.39 |
92 |
| Coefficient of liner thermal expansion (¡É-1) |
10 |
9.8 |
17.3 |
17 |
| Spectifie electrical resistance (u§Ùcm) |
M. phase(M)50~100
A.phase(A)80~100 |
55 |
72 |
1.7 |
Physical properties, except for dencity and melting point, of Ni-Ti alloy vary depending on temperature.
Products
Wire, flat wire and other formed products (springs, etc.) are fabricated. Special treatment for specific shape-recovery temperatures is also available upon request. Please don't hesitate to contact us regarding any other shape requirements you may have.
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