超纯镍钛管

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• 壁厚均匀；
• 晶粒度≥8级；

• 外径范围：0.18-16.0 mm;

• 壁厚范围：0.025-3.0 mm;

• 表面光滑：外表面Ra≤ 0.1μm，内表面Ra≤ 0.6μm;

• 符合ASTM F2063及GB24627标准;

• 材料纯度高：疏松和金属夹杂≤10.0 um；疏松和非金属夹杂面积百分比≤0.5%；

• 耐疲劳性能优异，可长期植入，用于瓣膜支架、外周支架、神经介入支架等。

化学成分

元素含量	质量分数%
Ni	54.5-57.0
C	≤0.050
Co	≤0.050
Cu	≤0.010
Cr	≤0.010
H	≤0.005
Fe	≤0.050
Nb	≤0.025
N+O	≤0.050
Ti	余量

机械性能

管材状态	超弹性
抗拉强度（mpa）	≥1000
延伸率(%)	≥10
4%平台应力(mpa)	≥380
6%残余变形(%)	≤0.3
奥氏体转变终止温度Af（℃）	≤15

供货规格

应用场景

超纯镍钛材料成分纯度更高，有更好的生物相容性、力学性能、耐疲劳性能，多用于长期植入器械。目前多用于高精端器械，如人工心脏瓣膜、颅内支架、外周支架等。

Product Advantage

• Uniform wall thickness；

• High precision；

• Grain size ≥8 grade；

• Outer diameter range: 0.18-16.0mm;

• Wall thickness range: 0.025-3.0mm;

• Smooth surface: outer surface Ra≤ 0.1μm, inner surface Ra≤ 0.6μm;

• Comply with ASTM F2063 and GB24627 standards;

• High material purity: loose and metal inclusion ≤ 10.0um; The area percentage of loose and non-metallic inclusions is ≤0.5%；

• Excellent fatigue resistance, can be implanted for a long time, for valve stent, peripheral stent, nerve interventional stent and so on。

Chemical Composition Mechanical Property

Element content	Mass fraction %
Ni	54.5-57.0
C	≤0.050
Co	≤0.050
Cu	≤0.010
Cr	≤0.010
H	≤0.005
Fe	≤0.050
Nb	≤0.025
N+O	≤0.050
Ti	Margin

Test item	Test result
Tensile strength（mpa）	≥1000
Rate of elongation(%)	≥10
4% Platform stress(mpa)	≥380
6% Residual deformation(%)	≤0.3
Austenitic transition end temperature Af（℃）	≤15

Delivery Specification

Outside diameter range(mm)	Outside diameter tolerance(mm)	Inside diameter tolerance(mm)	Wall thickness range(mm)	Wall thickness tolerance(mm)
0.18≤OD≤0.5	±0.002	±0.005	0.025≤WT≤0.12	±0.003
0.5＜OD≤1.0	±0.005	±0.008	0.025≤WT≤0.30	±0.005
1.0＜OD≤3.0	±0.010	±0.010	0.025≤WT≤0.40	±0.008
3.0＜OD≤6.0	±0.010	±0.015	0.05≤WT≤1.50	±0.008
6.0＜OD≤9.0	±0.015	±0.020	0.07≤WT≤2.00	±0.008
9.0＜OD≤12.0	±0.020	±0.020	0.10≤WT≤2.00	±0.010
12.0＜OD≤16.0	±0.020	±0.030	0.10≤WT≤3.00	±0.010
Inner surface: clean state, oxidation state External surface: grinding state, oxidation state

Application Scenario

Ultra-pure Nitinol materials have higher purity, better biocompatibility, mechanical properties, and fatigue resistance, and are mostly used for long-term implanted devices. At present, it is mostly used for high-precision instruments, such as artificial heart valves, intracranial stents, peripheral stents, etc.