The austenite finish temperature of the finished tube (active A
f
) with outer diameter in the range of 0.3 to 3.0 mm (0.012 to 0.12 in.) shall be measured on representative full round tube sample(s) using the bend and free recovery method described in Test Method ASTM F 2082-15.
ASTM F2633-13 Wrought Seamless NiTi Superelastic Tube for Medical Device and Implants
Superelastic properties are measured per Test Method ASTM F2516 at room temperature (22+/-2C)
Peiertech provides custom tubing manufacturing, including nitinol SE tube and SMA tube.
Outer Surface:
Oxide or Center-less-ground
Inner Surface:
Etched or Oxide
Other finished can be discussed with Peiertech.
Mechanical Properties
|
Condition
|
UTS
σb MPa
|
Elongation
δ%
|
Upper Plateau Stress
UPS MPa
|
Permanent set after 6% strain %
|
Active Af
ºC
|
|
Superelastic
|
≥1000
|
≥10
|
≥380
|
≤0.3
|
≤15
|
Permissible Variation in OD or ID Dimensions of
Guide Tube
*
|
Nominal OD (mm)
|
OD Tolerance (mm)
|
ID Tolerance (mm)
|
|
OD≤0.3
|
±0.005
|
±0.010
|
|
0.3<OD≤0.5
|
±0.007
|
±0.015
|
|
0.5<OD≤1.5
|
±0.015
|
±0.020
|
|
1.5<OD≤2.5
|
±0.020
|
±0.030
|
|
2.5<OD≤3.5
|
±0.020
|
±0.040
|
|
3.5<OD≤5.0
|
±0.030
|
±0.050
|
|
5.0<OD≤10.0
|
±0.050
|
±0.050
|
Permissible Variation in OD or ID Dimensions of
Tube for Stents
*
|
Nominal OD (mm)
|
OD Tolerance (mm)
|
WT Tolerance (mm)
|
|
0.3<OD≤0.6
|
±0.015
|
±0.015
|
|
0.6<OD≤1.5
|
±0.020
|
±0.015
|
|
1.5<OD≤2.5
|
±0.020
|
±0.020
|
|
2.5<OD≤3.5
|
±0.020
|
±0.020
|
|
3.5<OD≤5.0
|
±0.030
|
±0.025
|
|
5.0<OD≤10.0
|
±0.050
|
±0.030
|
|
10.0<OD
|
±0.050
|
±0.050
|
Medical Application:
Guide Tube
Needle, Nitinol Curved Needle
Dental Products
Stent