Active af temperature is one of the critical properties of Nitinol that can determine the effective super-elastic performance of the alloy. Although all the major Ni content in the range of 54.5~57.0mass% conforms the ASTM F2063-18 standard spec, its A
f
is very sensitive to the chemical composition, detailed grading of Nitinol composition is of crucial importance. This is why at Peiertech we use detailed and verified Nitinol code to identify the alloy.
Nitinol Alloy Code
|
Alloy Code
|
C
|
D
|
S
|
|
*Active Af after heat treament,ºC
|
17±7
|
10±7
|
25±5
|
UTS
σb MPa
|
≥1150
|
≥1300
|
≥1000
|
Elongation
δ%
|
≥10
|
≥10
|
≥10
|
Upper Plateau Stress
UPS MPa
|
≥440
|
≥480
|
≥400
|
|
Permanent set after 6% strain %
|
<0.5
|
<0.5
|
<0.5
|
Nitinol is a SMA alloy with superelastic and shape memory properties. Peiertech produces special High Quality Low Inclusion Nitinol Materials with Af -40ºC to 85ºC.
|
Diameter
|
Tolerances
|
|
4.00~2.00mm
|
+/-0.020mm
|
|
2.00~1.00mm
|
+/-0.015mm
|
|
1.00~0.35mm
|
+/-0.010mm
|
|
0.35~0.26mm
|
+/-0.007mm
|
|
0.26~0.15mm
|
+/-0.005mm
|
|
0.15~0.05mm
|
+/-0.004mm
|
|
0.05~0.02mm
|
+/-0.002mm
|
Notes:
1) Tighter tolerance available upon request
2) Out of round tolerance shall be one-half the total size tolerance
Medical Application:
Guide Wire, Coil
Braided Device(Braided Stent, Occluder Device, etc)
IUD
Shapeset Components
Coated Wire
Dentle File
Arch Wire
Suture Wire
Wire Surface Status
Black oxide
Light oxide(varies from golden yellow to brown)
Etched
Shinny
Gloss®(ultra shinny surface)
Centerless ground
Packaging of Wires
Spool: wire must be wound evenly on the spools, without breaks or tangles;
Fixed Length: Peiertech can cut wire at customer's requested length;
Coil
* Other packaging method could be discussed with Peiertech.
Delivery Status
Straightened super-elastic (SE)
Cold worked (CW)