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NiTi Shape Memory Alloy (SMA) Wire
- Description
-
Grade: NiTi Alloy Wire, NiTiNol Wire, NiTi SMA Wire.
Specification: ASTM F2063
Size: 0.05-5.0mm
Af Temperature: -15℃-100℃
Description: Nitinol is a nickel-titanium alloy with super elasticity and shape memory properties. Shape memory refers to the ability of Nitinol to undergo deformation at one temperature, then recover its original, under formed shape upon heating above its transformation temperature. Super elasticity occurs at a narrow temperature range just above its transformation temperature; in this case, no heating is necessary to cause the under formed shape to recover, and the material exhibits enormous elasticity, some 10-30 times that of ordinary metal.
Chemical Components (wt%):
Element
Ni
C
Co
Cu
Cr
H
Fe
Nb
N
O
Ti
min
54.5
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--
--
--
--
--
--
--
--
--
max
57.0
0.040
0.050
0.010
0.010
0.005
0.050
0.025
0.005
0.040
Bal.
Mechanical Properties (Annealed Type):
Ultimate Tensile Strength: 130 KSI (895 MPA); Yield Strength (0.2 Offset):
Austenite: 28-100 KSI (195-690 MPa); Martensite: 10-20 KSI (70-140 MPa); Elongation: 25-50%NiTi SMA Wire Applications:
- Heat engines
- Resilient glass frames
- Orthodontic arc wire
- Medical devices
- Actuators
- High reliability couplings
- Temperature control system couplings
Physical Properties:
Density, 0.2633 lbs/in³, 6.45 g/cm³; Electrical Resistivity: Ω-cm
Austenite: 82 x 10; Martensite: 76 x 10; Thermal Conductivity, W/cm°C; Austenite : 0.18; Martensite: 0.086
Mean Coefficient of Thermal Expansion, in/in/°F (μm/m•K) 80- 200°F (27- 93°C)
Austenite: 6.1 x 10 (11); Martensite: 3.6 x 10 (6.6); Modulus of Elasticity, KSI (MPa)
Austenite: 10.08-12.04 x 10³, (75-83 x 10³); Martensite: 4.06-5.80 x 10³, (28-40 x 10³)
Melting Point: 2930°F (1310°C)
Key words:
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