Nitico superelastic wire

Specifications:φ0.025mm~φ7.0mm Surface state:passivation state,black bright state,bright state Material grade:nt-c

Product accessories：

◆ Dimension and tolerance range

diameter（mm）	tolerance（mm）
＞0.025-0.05	±0.004
＞0.05-0.25	±0.005
＞0.25-0.35	±0.007
＞0.35-1.00	±0.010

◆ Chemical composition

chemical composition，%/wt
Ni	54.5~57.0	C	0.04max.
Ti	Remainder	O	0.04max.
Co	0.50max.
Melting point,℃		density,g/cm³
1310		6.5
Phase transition temperature,℃
As, fully annealed state	-50	Af,fully annealed state	-30

◆ Comparison of mechanical properties

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	NiTi	NiTiCo	Change
UPS（MPa）	440	714	62.27%↑
LPS（MPa）	145	366	152.41%↑
Elr（%）	0.18	0.18	0
Elu（%）	13.4	13.9	3.73%↑
MOE（ GPa）	35	48	37.14%↑

◆ Comparison of mechanical properties at different temperatures

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T（℃）	UPS（MPa）	LPS（MPa）	Elu（%）	Elr（%）
-20	456	91	13.6	0.36
0	544	247	13.7	0.18
20	714	366	13.9	0.2
40	787	474	15.3	0.46

◆ Characteristic

1.Higher rigidity
2.Higher upper and lower yield platforms
3.Lower phase transition temperature
4.Wider superelastic temperature range

◆ Application

High strength guide wire: compared with the binary nickel titanium alloy guide wire, the ternary nickel titanium cobalt alloy guide wire has higher upper and lower platforms and elastic modulus due to the introduction of cobalt element. As the core wire of the guide wire, it has better trafficability in the cavity.

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Building vibration reduction: nitinol alloy still has good super elasticity at low temperature, which makes it possible to apply it in building vibration reduction or outdoor super elasticity.

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keywords：

guide temperature plusmn

classification：

material

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